Southwest Montgomery County--North Bethesda & Potomac PUMA, MD

Public Use Microdata Area (PUMA)

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2023 Population

122,776

0.77% 1-year decline

US Senator

Chris Van Hollen

Democratic Party

US Senator

Angela Alsobrooks

Democratic Party

2023 Median Age

44.1

0.685% 1-year increase

2023 Poverty Rate

4.76%

2.86% 1-year increase

2023 Median Household Income

$169,960

2.97% 1-year growth

2023 Median Property Value

$900,600

2.82% 1-year growth

About

In 2023, Southwest Montgomery County--North Bethesda & Potomac PUMA, MD had a population of 123k people with a median age of 44.1 and a median household income of $169,960. Between 2022 and 2023 the population of Southwest Montgomery County--North Bethesda & Potomac PUMA, MD declined from 123,729 to 122,776, a −0.77% decrease and its median household income grew from $165,057 to $169,960, a 2.97% increase.

The 5 largest ethnic groups in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD are White (Non-Hispanic) (52.3%), Asian (Non-Hispanic) (22.9%), Black or African American (Non-Hispanic) (7.57%), Two+ (Hispanic) (5.33%), and Two+ (Non-Hispanic) (4.73%).

39.8% of the households in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.

89.1% of the residents in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD are U.S. citizens.

The largest universities in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD are SANS Technology Institute (379 degrees awarded in 2023), Hair Expressions Academy (61 degrees), and Omega Studios' School of Applied Recording Arts & Sciences (39 degrees).

In 2023, the median property value in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD was $900,600, and the homeownership rate was 68.2%.

Most people in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD drove alone to work, and the average commute time was 30.8 minutes. The average car ownership in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD was 2 cars per household.

Southwest Montgomery County--North Bethesda & Potomac PUMA, MD borders North Montgomery County--Olney, Damascus & Darnestown PUMA, MD, Central Montgomery County--Gaithersburg & Rockville PUMA, MD, East Central Montgomery County--Wheaton, Aspen Hill & Glenmont PUMA, MD, South Montgomery County--South Bethesda & Chevy Chase PUMA, MD, and Fairfax County (Northeast)--McLean & Idylwood PUMA, VA.

About the photo: Downtown Bethesda, Maryland as viewed through an opening in the Mary Ann Mears sculpture 'Beacon' (1985).

Photo by Kevin Harber

United States Maryland Virginia

Population & Diversity

Southwest Montgomery County--North Bethesda & Potomac PUMA, MD is home to a population of 123k people, from which 89.1% are citizens. As of 2023, 32.8% of Southwest Montgomery County--North Bethesda & Potomac PUMA, MD residents were born outside of the country (40.3k people).

In 2023, there were 2.28 times more White (Non-Hispanic) residents (64.3k people) in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD than any other race or ethnicity. There were 28.2k Asian (Non-Hispanic) and 9.29k Black or African American (Non-Hispanic) residents, the second and third most common ethnic groups.

The most common non-English languages spoken as the primary langauge in households in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD are Spanish (10,496 households), Chinese (Incl. Mandarin, Cantonese) (10,334 households), and Persian (Incl. Farsi, Dari) (2,566 households).

Population & Diversity

Residents by Gender and Age

RACE/ETHNICITY

62,124

Women

51.3%

59,025

Men

48.7%

The resident population of United States in 2022 was 121,149 inhabitants, with 48.7% men, and 51.3% women.

The visualization shows the distribution of the residents by gender and age in the United States.

With the upper buttons you can add a filter by race.

Citizenship

89.1%

2023 Citizenship

89%

2022 Citizenship

As of 2023, 89.1% of Southwest Montgomery County--North Bethesda & Potomac PUMA, MD residents were US citizens, which is lower than the national average of 93.4%. In 2022, the percentage of US citizens in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD was 89%, meaning that the rate of citizenship has been increasing.

The following chart shows US citizenship percentages in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD compared to that of it's neighboring and parent geographies.

Diversity

Race and Ethnicity

The 3 largest ethnic groups in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD

White (Non-Hispanic)
64.3k ± 2.13k
Asian (Non-Hispanic)
28.2k ± 1.51k
Black or African American (Non-Hispanic)
9.29k ± 1.03k

11.6%

Hispanic Population

14.3k people

11.6% of the people in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD are hispanic (14.3k people).

The following chart shows the 7 races represented in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD as a share of the total population.

Global Diversity

Most Common Origin

China
4,590 ± 1,632 people
India
3,085 ± 1,346 people
Iran
2,146 ± 1,127 people

In 2022, the most common birthplace for the foreign-born residents of Southwest Montgomery County--North Bethesda & Potomac PUMA, MD was China, the natal country of 4,590 Southwest Montgomery County--North Bethesda & Potomac PUMA, MD residents, followed by India with 3,085 and Iran with 2,146.

Foreign-Born Population

32.8%

2023 Foreign-Born Population

40.3k people

32.3%

2022 Foreign-Born Population

39.9k people

As of 2023, 32.8% of Southwest Montgomery County--North Bethesda & Potomac PUMA, MD residents (40.3k people) were born outside of the United States, which is higher than the national average of 13.8%. In 2022, the percentage of foreign-born citizens in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD was 32.3%, meaning that the rate has been increasing.

The following chart shows the percentage of foreign-born residents in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD compared to that of it's neighboring and parent geographies.

Non-English Households

Most Common Non-English Languages

Spanish
10,496 households (8.93%)
Chinese (Incl. Mandarin, Cantonese)
10,334 households (8.79%)
Persian (Incl. Farsi, Dari)
2,566 households (2.18%)

39.8% of the households in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD reported speaking a non-English language at home as their primary shared language, which is higher than the national average of 22%. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.

In 2023, the most common non-English language spoken in households in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD was Spanish. 8.93% of the households in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD reported speaking Spanish at home as the primary shared language between all members living in the household.

Military

Veterans

Most Common Service Period

Vietnam
1,136 ± 187
Gulf War (2001-)
1,033 ± 216
Gulf War (1990s)
576 ± 130

Southwest Montgomery County--North Bethesda & Potomac PUMA, MD has a large population of military personnel who served in Vietnam, 1.1 times greater than any other conflict.

Economy

The economy of Southwest Montgomery County--North Bethesda & Potomac PUMA, MD employs N/A people. The largest industries in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD are Computer Systems Design (3,397 people), Scientific research & development services (3,214 people), and Management, scientific & technical consulting services (2,839 people), and the highest paying industries are Car Dealers ($331,463), Other information services, except libraries & archives, & internet publishing & broadcasting & web search portals ($306,994), and Agencies, brokerages, and other insurance related activities ($297,604).

Males in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD have an average income that is 1.37 times higher than the average income of females, which is $125,649. The income inequality in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD (measured using the Gini index) is 0.482, which is higher than than the national average.

Employment

Workforce Diversity

Measure

RACE/ETHNICITY

N/A

Women

N/A%

N/A

Men

N/A%

The workforce of Southwest Montgomery County--North Bethesda & Potomac PUMA, MD in 2020 was N/A people, with N/A% woman, and N/A% men.

The visualization shows the distribution of the workforce by gender and age in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD.

With the upper buttons you can see the distribution of the average salary and add a filter by race.

Occupations

N/A

N/A Value

From N/A to N/A, employment in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD stayed at a rate of NaNk%, from N/A employees to N/A employees.

The most common job groups, by number of people living in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD, are Lawyers, & judges, magistrates, & other judicial workers (3,903 people), Other managers (2,998 people), and Software developers (1,928 people). This chart illustrates the share breakdown of the primary jobs held by residents of Southwest Montgomery County--North Bethesda & Potomac PUMA, MD.

Unemployment Insurance Claims

Data is only available at the state level. Showing data for false.

This chart shows weekly unemployment insurance claims in Maryland (not-seasonally adjusted) compared with the four states with the most similar impact.

The most recent data point uses Advance State Claims data, which can be revised in subsequent weeks.

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Industries

Employment by Industries

N/A

N/A Value

From N/A to N/A, employment in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD stayed at a rate of NaNk%, from N/A employees to N/A employees.

The most common employment sectors for those who live in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD, are Computer Systems Design (3,397 people), Scientific research & development services (3,214 people), and Management, scientific & technical consulting services (2,839 people). This chart shows the share breakdown of the primary industries for residents of Southwest Montgomery County--North Bethesda & Potomac PUMA, MD, though some of these residents may live in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD and work somewhere else. Census data is tagged to a residential address, not a work address.

Median Earnings by Industry

$118,659

Median earning men ± $4,263

$82,879

Median earning women ± $3,496

The industries with the best median earnings for men in 2023 are Manufacturing ($160,000), Finance & Insurance, & Real Estate & Rental & Leasing ($152,554), and Professional, Scientific, & Management, & Administrative & Waste Management Services ($140,386).

The industries with the best median earnings for women in 2023 are Public Administration ($143,331), Manufacturing ($139,830), and Agriculture, Forestry, Fishing & Hunting, & Mining ($123,833).

Employment by Industry Sector

Data is only available at the state level. Showing data for Maryland.

Y-Axis

0.617%

Year-over-year growth

Employment change between February 2022 and February 2023

As of February 2023, there are 2.69M people employed in Maryland. This represents a 0.617% increase in employment when compared to February 2022.

Right after the beginning of the COVID-19 pandemic, during April 2020, a general dip can be seen across industry sectors, resulting in an overall decline in employment by 13.9%.

The following chart shows monthly employment numbers for each industry sector in Maryland.

Civics

In the 2024 presidential election, the popular vote in Maryland went to Kamala Harris with 62.6% of the vote. The runner-up was Donald J. Trump (34.1%), followed by Jill Stein (1.09%).

Chris Van Hollen and Angela Alsobrooks are the senators currently representing the state of Maryland. In the United States, senators are elected to 6-year terms with the terms for individual senators staggered.

Maryland is currently represented by 8 members in the U.S. house, and members of the House of Representives are elected to 2-year terms.

Presidential Elections

Presidential Popular Vote Over Time

Voting results are not available for Southwest Montgomery County--North Bethesda & Potomac PUMA, MD. Showing the available data for Maryland.

2024 Election Results

Kamala Harris (62.6%)
Democratic Party
Donald J. Trump (34.1%)
Republican Party
Jill Stein (1.09%)
Green Party

In the 2024 presidential election, the popular vote in Maryland went to Kamala Harris with 62.6% of the vote. The runner-up was Donald J. Trump (34.1%), followed by Jill Stein (1.09%).

The following chart shows the popular vote results in Maryland for each registered party from 1976 to 2024.

Senator Elections

US Senators from Maryland

Senatorial voting results are only available at the state level. Showing data for Maryland.

Chris Van Hollen

Senator from Maryland

Assumed office on January 3, 2017

Angela Alsobrooks

Senator from Maryland

Assumed office on January 3, 2025

Chris Van Hollen and Angela Alsobrooks are the senators currently representing Maryland.

In the United States, senators are elected to 6-year terms with the terms for individual senators staggered.

The following chart shows elected senators in Maryland over time, excluding special elections, colored by their political party.

US Representative Elections

US Representatives from Maryland

Maryland is currently represented by 8 members in the U.S. house.

Members of the House of Representives are elected to 2-year terms, and the following chart shows the how the members for Maryland have changed over time starting in 2008.

Education

In 2023, universities in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD awarded 479 degrees. The student population of Southwest Montgomery County--North Bethesda & Potomac PUMA, MD in 2023 is skewed towards men, with 1,598 male students and 247 female students.

Most students graduating from Universities in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD are White (251 and 55.9%), followed by Black or African American (62 and 13.8%), Hispanic or Latino (46 and 10.2%), and Unknown (44 and 9.8%).

The largest universities in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD by number of degrees awarded are SANS Technology Institute (379 and 79.1%), Hair Expressions Academy (61 and 12.7%), and Omega Studios' School of Applied Recording Arts & Sciences (39 and 8.14%).

The most popular majors in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD are Computer & Information Systems Security (379 and 79.1%), Recording Arts Technology (39 and 8.14%), and Aesthetician & Skin Care Specialist (38 and 7.93%).

Admissions & Enrollments

Enrollments by Gender and Races

In 2023 there were 1,845 students enrolled in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD, 86.6% men and 13.4% women.

By race, the largest number of students enrolled was concentrated in White with 1,028 records, of which 11.8% were women and 88.2% men.

Completions

Concentrations

Computer & Information Systems Security

Most Common

186 degrees awarded

In 2023, the most common concentation for Postbaccalaureate Certificate recipients in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD was N/A with N/A degrees awarded.

This visualization illustrates the percentage of students graduating with a Postbaccalaureate Certificate from schools in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD according to their major.

Universities

Gender

Race

Largest Universities by degrees awarded

SANS Technology Institute
379 degrees awarded
Hair Expressions Academy
61 degrees awarded
Omega Studios' School of Applied Recording Arts & Sciences
39 degrees awarded

In 2023, the institution with the largest number of graduating students was SANS Technology Institute with 379 degrees awarded.

Student Diversity

In 2023, 391 men were awarded degrees from institutions in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD, which is 4.44 times more than the 88 female students who received degrees in the same year.

In 2023, the most common race/ethnicity group awarded degrees at institutions was White students. These 251 degrees mean that there were 4.05 times more degrees awarded to White students then the next closest race/ethnicity group, Black or African American, with 62 degrees awarded.

Awarded Degrees over Time

The graph shows the evolution of awarded degrees by degrees. Under the paragraphs, the average number of awarded degrees by university in each degree is shown.

Tuition

Average Net Price by Sector

Private for-profit, 4-year or above ($20,250) is the sector with the highest median state tuition in 2023.

The graph shows the average net price by sector and year.

Working Population

Educational Pyramid

Measure

In 2022, 1.72% of men over 25 years of age had not completed any academic degree (no schooling), while 0.823% of women were in the same situation.

This visualization shows the gender distribution of the population according to the academic level reached.

Educational Attainment

Race

The most common educational levels obtained by the working population of Southwest Montgomery County--North Bethesda & Potomac PUMA, MD in 2022 were Graduate Degree (40.9k), Bachelors Degree (27.8k), and Primary Education (11.4k).

This visualization illustrates the percentage distribution of the population according to the highest educational level reached. You can filter the data by race by using the selector above.

Housing & Living

The median property value in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD was $900,600 in 2023, which is 2.97 times larger than the national average of $303,400. Between 2022 and 2023 the median property value increased from $875,900 to $900,600, a 2.82% increase. The homeownership rate in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD is 68.2%, which is approximately the same as the national average of 65%.

People in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD have an average commute time of 30.8 minutes, and they drove alone to work. Car ownership in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD is approximately the same as the national average, with an average of 2 cars per household.

Median household income in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD is $169,960. In 2023, the PUMA with the highest Median Household Income in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD was South Montgomery County--South Bethesda & Chevy Chase PUMA, MD with a value of $201,565, followed by North Montgomery County--Olney, Damascus & Darnestown PUMA, MD and West Howard County--Ellicott City (North & West), Fulton & Highland PUMA, MD, with respective values of $177,170 and $175,938.

Housing

Property

$900,600

Median Property Value 2023

±$15,065

$32,317

Median Property Taxes

±$1,064

The following chart display owner-occupied housing units distributed between a series of property tax buckets compared to the national averages for each bucket. In Southwest Montgomery County--North Bethesda & Potomac PUMA, MD the largest share of households pay taxes in the $3k+ range.

The chart underneath the paragraph shows the property taxes in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD compared to it's parent and neighbor geographies.

Rent vs Own

68.2%

Homeownership

2023

68.4%

Homeowners with Mortgage

2023

In 2023, 68.2% of the housing units in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD were occupied by their owner. This percentage declined from the previous year's rate of 68.4%.

This chart shows the percentage of owner in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD compared it's parent and neighboring geographies.

Equity

Income by Location

Use the dropdown to filter by race/ethnicity.

Race/Ethnicity

Highest Median Household Income (Total)

In 2023, the PUMA with the highest Median Household Income (Total) in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD was South Montgomery County--South Bethesda & Chevy Chase PUMA, MD with a value of $201,565, followed by North Montgomery County--Olney, Damascus & Darnestown PUMA, MD and West Howard County--Ellicott City (North & West), Fulton & Highland PUMA, MD, with respective values of $177,170 and $175,938.

The following map shows all of the PUMAs in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD colored by their Median Household Income (Total).

Household Income

Please note that the buckets used in this visualization were not evenly distributed by ACS when publishing the data.

$169,960

Median Household Income

± $5,178

47.4k

Number of Households

± 1,539

In 2023, the median household income of the 47.4k households in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD grew to $169,960 from the previous year's value of $165,057.

The following chart displays the households in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD distributed between a series of income buckets compared to the national averages for each bucket. The largest share of households have an income in the $200k+ range.

Wage Distribution

0.482

2022 Wage GINI in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD

N/A Wage GINI in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD

In 2022, the income inequality in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD was 0.482 according to the GINI calculation of the wage distribution. Income inequality had a 51.8% decline from N/A to 2022, which means that wage distribution grew somewhat more even. The GINI for Southwest Montgomery County--North Bethesda & Potomac PUMA, MD was higher than than the national average of 0.478. In other words, wages are distributed less evenly in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD in comparison to the national average.

This chart shows the number of workers in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD across various wage buckets compared to the national average.

Transportation

Commuter Transportation

Most Common Commute in 2023

Drove Alone (50.3%)
Worked At Home (33.3%)
Public Transit (8.27%)

In 2023, 50.3% of workers in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD drove alone to work, followed by those who worked at home (33.3%) and those who used public transit to get to work (8.27%).

The following chart shows the number of households using each mode of transportation over time, using a logarithmic scale on the y-axis to help better show variations in the smaller means of commuting.

Commute Time

30.8 minutes

Average Travel Time

Using averages, employees in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD have a longer commute time (30.8 minutes) than the normal US worker (26.6 minutes). Additionally, 2.17% of the workforce in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD have "super commutes" in excess of 90 minutes.

The chart below shows how the median household income in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD compares to that of it's neighboring and parent geographies.

Car Ownership

2 cars

Average Number

The following chart displays the households in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD distributed between a series of car ownership buckets compared to the national averages for each bucket. The largest share of households in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD have 2 cars.

Poverty

Poverty & Diversity

4.76% of the population for whom poverty status is determined in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD (5.79k out of 122k people) live below the poverty line, a number that is lower than the national average of 12.4%. The largest demographic living in poverty are Females 75+, followed by Females 65 - 74 and then Females 55 - 64.

The most common racial or ethnic group living below the poverty line in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD is White, followed by Black and Asian.

The Census Bureau uses a set of money income thresholds that vary by family size and composition to determine who classifies as impoverished. If a family's total income is less than the family's threshold than that family and every individual in it is considered to be living in poverty.

Social Needs

Data only available at the state level.

Most prevalent states

California
35,798 individuals
New York
5,087 individuals
Florida
4,915 individuals

In 2017, California had the highest estimated number of chronically homeless individuals in the nation, at 35,798. New York has the second highest (5,087), followed by Florida (4,915).

The following map shows the estimated number of chronically homeless individuals by state over multiple years.

Health

97.4% of the population of Southwest Montgomery County--North Bethesda & Potomac PUMA, MD has health coverage, with 62.9% on employee plans, 5.82% on Medicaid, 13.5% on Medicare, 14.2% on non-group plans, and 0.885% on military or VA plans.

Primary care physicians in Maryland see 1133 patients per year on average, which represents a 1.34% increase from the previous year (1118 patients). Compare this to dentists who see 1258 patients per year, and mental health providers who see 315 patients per year.

Coverage

Patient to Clinician Ratios

Data is only available at the state level. Showing data for Maryland.

1,133 to 1

Patient to Primary Care Physician Ratio in Maryland

Primary care physicians in Maryland see an average of 1,133 patients per year. This represents a 1.34% increase from the previous year (1,118 patients).

The following chart shows how the number of patients seen by primary care physicians has been changing over time in Maryland in comparison to its neighboring geographies.

Health Care Diversity

In 2023, insured persons according to age ranges were distributed in 22.9% under 18 years, 15.9% between 18 and 34 years, 41.6% between 35 and 64 years, and 19.7% over 64 years.

By gender, of the total number of insured persons, 48.8% were men and 51.2% were women.

The following chart shows the number of people with health coverage by gender.

Uninsured People

2.59%

Uninsured

62.9%

Employer Coverage

5.82%

Medicaid

13.5%

Medicare

14.2%

Non-Group

0.885%

Military or VA

Between 2022 and 2023, the percent of uninsured citizens in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD declined by 3.78% from 2.69% to 2.59%.

The following chart shows how the percent of uninsured individuals in Southwest Montgomery County--North Bethesda & Potomac PUMA, MD changed over time compared with the percent of individuals enrolled in various types of health insurance.