St. Mary's County, MD

County

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    2024 Population
    115,126
    US Senator
    Chris Van Hollen
    Democratic Party
    US Senator
    Angela Alsobrooks
    Democratic Party
    2024 Median Age
    37.2
    0.541% 1-year increase
    2024 Poverty Rate
    7.98%
    7.14% 1-year increase
    2024 Median Household Income
    $119,446
    4.25% 1-year growth
    2024 Median Property Value
    $407,600
    4.27% 1-year growth
    2024 Employed Population
    57,216
    0.46% 1-year growth

    About

    None of the households in St. Mary's County, 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.

    98.2% of the residents in St. Mary's County, MD are U.S. citizens.

    The largest universities in St. Mary's County, MD are St. Mary's College of Maryland (410 degrees awarded in 2024).

    In 2024, the median property value in St. Mary's County, MD was $407,600, and the homeownership rate was 73.2%.

    Most people in St. Mary's County, MD drove alone to work, and the average commute time was 29.9 minutes. The average car ownership in St. Mary's County, MD was 2 cars per household.

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    Population & Diversity

    St. Mary's County, MD is home to a population of 115k people, from which 98.2% are citizens. As of 2024, 4.18% of St. Mary's County, MD residents were born outside of the country (4.81k people).

    In 2024, there were 4.83 times more White (Non-Hispanic) residents (80.9k people) in St. Mary's County, MD than any other race or ethnicity. There were 16.8k Black or African American (Non-Hispanic) and 5.15k Two Races Excluding Other, & Three or More Races (Non-Hispanic) residents, the second and third most common ethnic groups.

    Population & Diversity

    Citizenship

    98.2%
    2024 Citizenship
    98.2%
    2023 Citizenship

    As of 2024, 98.2% of St. Mary's County, MD residents were US citizens, which is higher than the national average of 93.2%. In 2023, the percentage of US citizens in St. Mary's County, MD was 98.2%, meaning that the rate of citizenship has been increasing.

    The following chart shows US citizenship percentages in St. Mary's County, MD compared to that of it's neighboring and parent geographies.

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    Diversity

    Race and Ethnicity

    The 3 largest ethnic groups in St. Mary's County, MD
    1. White (Non-Hispanic)
      80.9k ± 722
    2. Black or African American (Non-Hispanic)
      16.8k ± 628
    3. Two Races Excluding Other, & Three or More Races (Non-Hispanic)
      5.15k ± 665
    6.14%
    Hispanic Population
    7.07k people

    In 2024, there were 4.83 times more White (Non-Hispanic) residents (80.9k people) in St. Mary's County, MD than any other race or ethnicity. There were 16.8k Black or African American (Non-Hispanic) and 5.15k Two Races Excluding Other, & Three or More Races (Non-Hispanic) residents, the second and third most common ethnic groups.

    6.14% of the people in St. Mary's County, MD are hispanic (7.07k people).

    The following chart shows the 8 races represented in St. Mary's County, MD as a share of the total population.

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    Global Diversity

    The PUMS dataset is not available at the County level, so we are showing data for Maryland.
    Most Common Origin
    1. El Salvador
      133,677 ± 8,879 people
    2. India
      61,989 ± 6,082 people
    3. Nigeria
      50,832 ± 5,513 people

    In 2024, the most common birthplace for the foreign-born residents of Maryland was El Salvador, the natal country of 133,677 Maryland residents, followed by India with 61,989 and Nigeria with 50,832.

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    Foreign-Born Population

    4.18%
    2024 Foreign-Born Population
    4.81k people
    4.41%
    2023 Foreign-Born Population
    5.04k people

    As of 2024, 4.18% of St. Mary's County, MD residents (4.81k people) were born outside of the United States, which is approximately the same as the national average of 14%. In 2023, the percentage of foreign-born citizens in St. Mary's County, MD was 4.41%, meaning that the rate has been decreasing.

    The following chart shows the percentage of foreign-born residents in St. Mary's County, MD compared to that of it's neighboring and parent geographies.

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    Military

    Veterans

    Most Common Service Period
    1. Gulf War (2001-)
      5,562 ± 626
    2. Gulf War (1990s)
      2,726 ± 444
    3. Vietnam
      2,103 ± 368

    St. Mary's County, MD has a large population of military personnel who served in Gulf War (2001-), 2.04 times greater than any other conflict.

    The chart shows the distribution of veterans by conflict in St. Mary's County, MD.

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    Health

    96.1% of the population of St. Mary's County, MD has health coverage, with 51.5% on employee plans, 12.9% on Medicaid, 8.27% on Medicare, 16.6% on non-group plans, and 6.8% on military or VA plans.

    Primary care physicians in St. Mary's County, MD see 2,725 patients per year on average, which represents a 0% change from the previous year (2,725 patients). Compare this to dentists who see 1947 patients per year, and mental health providers who see 659 patients per year.

    By gender, of the total number of insured persons, 49.5% were men and 50.5% were women.

    Coverage

    Patient to Clinician Ratios

    2,725 to 1
    Patient to Primary Care Physician Ratio in St. Mary's County, MD

    Primary care physicians in St. Mary's County, MD see an average of 2,725 patients per year. This represents a 0% change from the previous year (2,725 patients).

    The following chart shows how the number of patients seen by primary care physicians has been changing over time in St. Mary's County, MD in comparison to its neighboring geographies.

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    Health Care Diversity

    In 2024, insured persons according to age ranges were distributed in 26.3% under 18 years, 20.3% between 18 and 34 years, 39.3% between 35 and 64 years, and 14.1% over 64 years.

    By gender, of the total number of insured persons, 49.5% were men and 50.5% were women.

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

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    Uninsured People

    3.87%
    Uninsured
    51.5%
    Employer Coverage
    12.9%
    Medicaid
    8.27%
    Medicare
    16.6%
    Non-Group
    6.8%
    Military or VA

    Between 2023 and 2024, the percent of uninsured citizens in St. Mary's County, MD grew by 3.69% from 3.74% to 3.87%.

    The following chart shows how the percent of uninsured individuals in St. Mary's County, MD changed over time compared with the percent of individuals enrolled in various types of health insurance.

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    Health Indicators

    Health Outcomes

    Indicator

    In 2025, the average number of mentally unhealthy days reported in past 30 days (age-adjusted) was 5.37 in St. Mary's County, MD.

    The graphic shows the trend of the indicator in St. Mary's County, MD.

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    Health Behaviors

    Indicator

    In 2025, the percentage of the adult population (age 18 and older) that reports a body mass index (BMI) greater than or equal to 30 kg/m2 (age-adjusted) was 35.2% in St. Mary's County, MD.

    The graphic shows the trend of the indicator in St. Mary's County, MD.

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    Clinical Care

    Indicator

    In 2025, the percentage of population under age 65 without health insurance was 5.34% in St. Mary's County, MD.

    The graphic shows the trend of the indicator in St. Mary's County, MD.

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    Economy

    The economy of St. Mary's County, MD employs 57.2k people. In 2024, the largest industries in St. Mary's County, MD were Public Administration (11,675 people), Professional, Scientific, & Technical Services (8,149 people), and Health Care & Social Assistance (6,087 people), and the highest paying industries were Public Administration ($118,850), Utilities ($116,250), and Professional, Scientific, & Technical Services ($95,365).

    Employment

    Occupations

    57.2k
    2024 Value
    ± 2,108
    0.46%
    1 Year growth
    ± 5.25%

    From 2023 to 2024, employment in St. Mary's County, MD grew at a rate of 0.46%, from 57k employees to 57.2k employees.

    The most common job groups, by number of people living in St. Mary's County, MD, are Management Occupations (7,418 people), Business & Financial Operations Occupations (5,716 people), and Office & Administrative Support Occupations (5,564 people). This chart illustrates the share breakdown of the primary jobs held by residents of St. Mary's County, MD.

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    Unemployment Insurance Claims

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

    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

    57.2k
    2024 Value
    ± 2,108
    0.46%
    1 Year growth
    ± 5.25%

    From 2023 to 2024, employment in St. Mary's County, MD grew at a rate of 0.46%, from 57k employees to 57.2k employees.

    The most common employment sectors for those who live in St. Mary's County, MD, are Public Administration (11,675 people), Professional, Scientific, & Technical Services (8,149 people), and Health Care & Social Assistance (6,087 people). This chart shows the share breakdown of the primary industries for residents of St. Mary's County, MD, though some of these residents may live in St. Mary's County, MD and work somewhere else. Census data is tagged to a residential address, not a work address.

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    Median Earnings by Industry

    $85,448
    Median earning men ± $3,417
    $55,966
    Median earning women ± $5,699

    The industries with the best median earnings for men in 2024 are Public Administration ($121,819), Professional, Scientific, & Management, & Administrative & Waste Management Services ($104,131), and Manufacturing ($93,785).

    The industries with the best median earnings for women in 2024 are Public Administration ($111,932), Construction ($75,092), and Professional, Scientific, & Management, & Administrative & Waste Management Services ($72,990).

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    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.

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    Establishments by Size

    The industries with the most establishments
    1. 178
      Professional, Scientific, and Technical Services
    2. 157
      Construction
    3. 113
      Other Services (except Public Administration)

    The visualization shows the distribution of establishments by industry and by size according to the number of employees.

    The visualization shows the number of establishments and its share across establishment sizes.

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    Payroll by Industry Sector

    The industries with the highest total annual payroll
    1. $1.04M
      Professional, Scientific, and Technical Services
    2. $220k
      Health Care and Social Assistance
    3. $160k
      Retail Trade

    The chart shows the total annual payroll and the average annual payroll by industry.

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    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

    Voting results are not available for St. Mary's County, MD. Showing the available data for Maryland.
    2024 Election Results
    1. Kamala Harris (62.6%)
      Democratic Party
    2. Donald J. Trump (34.1%)
      Republican Party
    3. 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.

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    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 Maryland3
    Assumed office on January 3, 2017
    Angela Alsobrooks
    Senator from Maryland1
    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.

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    Education

    In 2024, universities in St. Mary's County, MD awarded 410 degrees. The student population of St. Mary's County, MD in 2024 is skewed towards women, with 651 male students and 979 female students.

    Most students graduating from Universities in St. Mary's County, MD are White (312 and 76.5%), Black or African American (36 and 8.82%), Hispanic or Latino (26 and 6.37%), and Two or More Races (13 and 3.19%).

    The largest universities in St. Mary's County, MD by number of degrees awarded are St. Mary's College of Maryland (410 and 100%).

    The most popular majors in St. Mary's County, MD are General Psychology (54 and 13.2%), General Biological Sciences (44 and 10.7%), and General Economics (41 and 10%).

    The median tuition cost for a public four year colleges is $12,116 for in-state students and $28,192 for out-of-state students.

    Admissions & Enrollments

    Applicants, Admissions & Enrolled

    University
    Measure

    In 2024 in St. Mary's County, MD, the percentage of applicants admitted was 68.6%, while the percentage of admitted who enrolled was 17.3%. The number of students enrolled in 2024 was 1,630 (39.9% men and 60.1% women).

    The line chart  shows the evolution of the percentage of applicants admitted, admitted who enrolled or the number of students enrolled according to the option selected in the upper button.

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    Enrollments by Gender and Races

    Universities

    In 2024 there were 1,630 students enrolled in St. Mary's County, MD, 39.9% men and 60.1% women.

    By race, the largest number of students enrolled was concentrated in White with 1,118 records, of which 60% were women and 40% men.

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    Completions

    Concentrations

    Most Common
    1. General Psychology
      54 degrees awarded
    2. General Biological Sciences
      44 degrees awarded
    3. General Economics
      41 degrees awarded

    In 2024, the most common concentation for Bachelors Degree recipients in St. Mary's County, MD was General Psychology with 54 degrees awarded.

    This visualization illustrates the percentage of students graduating with a Bachelors Degree from schools in St. Mary's County, MD according to their major.

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    Universities

    Gender
    Race
    St. Mary's College of Maryland
    Largest Universities by degrees awarded
    410 degrees awarded

    In 2024, the institution with the largest number of graduating students was St. Mary's College of Maryland with 410 degrees awarded.

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    Student Diversity

    University

    In 2024, 143 men were awarded degrees from institutions in St. Mary's County, MD, which is 0.536 times less than the 267 female students who received degrees in the same year.

    In 2024, the most common race/ethnicity group awarded degrees at institutions was White students. These 312 degrees mean that there were 8.67 times more degrees awarded to White students then the next closest race/ethnicity group, Black or African American, with 36 degrees awarded.

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    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.

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    Tuition

    Average Net Price by Sector

    Universities

    Public, 4-year or above ($12,116) is the sector with the highest median state tuition in 2024.

    Public, 4-year or above ($3,182) is the sector with the highest median state fee in 2024.

    Public, 4-year or above ($950) is the sector with the highest average net price of books and supplies.

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

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    Housing & Living

    The median property value in St. Mary's County, MD was $407,600 in 2024, which is 1.23 times larger than the national average of $332,700. Between 2023 and 2024 the median property value increased from $390,900 to $407,600, a 4.27% increase. The homeownership rate in St. Mary's County, MD is 73.2%, which is higher than the national average of 65.2%.

    People in St. Mary's County, MD have an average commute time of 29.9 minutes, and they drove alone to work. Car ownership in St. Mary's County, MD is approximately the same as the national average, with an average of 2 cars per household.

    In 2025, 13.1% of the population was living with severe housing problems in St. Mary's County, MD. From 2014 to 2025, the indicator declined 0.314%.

    Housing

    Property

    $407,600
    Median Property Value 2024
    ±$8,365
    $31,049
    Median Property Taxes
    ±$1,331

    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 St. Mary's County, MD the largest share of households pay taxes in the $3k+ range.

    The chart underneath the paragraph shows the property taxes in St. Mary's County, MD compared to it's parent and neighbor geographies.

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    Rent vs Own

    73.2%
    Homeownership
    2024
    66.9%
    Homeowners with Mortgage
    2024

    In 2024, 73.2% of the housing units in St. Mary's County, MD were occupied by their owner. This percentage grew from the previous year's rate of 72.6%.

    This chart shows the percentage of owner in St. Mary's County, MD compared it's parent and neighboring geographies.

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    Equity

    Household Income

    Please note that the buckets used in this visualization were not evenly distributed by ACS when publishing the data.
    $119,446
    Median Household Income
    ± $4,480
    42.4k
    Number of Households
    ± 1,690

    In 2024, the median household income of the 42.4k households in St. Mary's County, MD grew to $119,446 from the previous year's value of $114,580.

    The following chart displays the households in St. Mary's County, 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.

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    Wage Distribution

    The closest comparable wage GINI for St. Mary's County, MD is from Maryland.
    0.448
    2024 Wage GINI in Maryland
    0.451
    2023 Wage GINI in Maryland

    In 2024, the income inequality in Maryland was 0.448 according to the GINI calculation of the wage distribution. Income inequality had a 0.523% decline from 2023 to 2024, which means that wage distribution grew somewhat more even. The GINI for Maryland was lower than than the national average of 0.474. In other words, wages are distributed more evenly in Maryland in comparison to the national average.

    This chart shows the number of workers in Maryland across various wage buckets compared to the national average.

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    Transportation

    Commuter Transportation

    Most Common Commute in 2024
    1. Drove Alone (72.2%)
    2. Worked At Home (17.5%)
    3. Carpooled (5.71%)

    In 2024, 72.2% of workers in St. Mary's County, MD drove alone to work, followed by those who worked at home (17.5%) and those who carpooled to work (5.71%).

    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.

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    Commute Time

    29.9 minutes
    Average Travel Time

    Using averages, employees in St. Mary's County, MD have a longer commute time (29.9 minutes) than the normal US worker (26.4 minutes). Additionally, 6.58% of the workforce in St. Mary's County, MD have "super commutes" in excess of 90 minutes.

    The chart below shows how the median household income in St. Mary's County, MD compares to that of it's neighboring and parent geographies.

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    Car Ownership

    2 cars
    Average Number

    The following chart displays the households in St. Mary's County, MD distributed between a series of car ownership buckets compared to the national averages for each bucket. The largest share of households in St. Mary's County, MD have 2 cars.

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    Poverty

    Severe Housing Problems

    In 2025, 13.1% of the population was living with severe housing problems in St. Mary's County, MD. From 2014 to 2025, the indicator declined 0.314%.

    The graph shows the trend of the percentage of the population living with severe housing problems.

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    Poverty & Diversity

    7.98% of the population for whom poverty status is determined in St. Mary's County, MD (8.98k out of 113k people) live below the poverty line, a number that is lower than the national average of 12.5%. The largest demographic living in poverty are Females 25 - 34, followed by Females 45 - 54 and then Females 65 - 74.

    The most common racial or ethnic group living below the poverty line in St. Mary's County, MD is White, followed by Black and Two Or More.

    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.

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    Children in Poverty

    In 2025, 10.5% of the children was living in poverty in St. Mary's County, MD. From 2014 to 2025, the indicator declined 1.6%.

    The graph shows the trend of the percentage of the children living in poverty.

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    Security

    Crimes & Accidents

    Indicator

    In 2022, the number of reported violent crimes offenses per 100,000 population was 221 in St. Mary's County, MD. From 2014 to 2022, the indicator declined 64.8% per 100,000 population.

    The graph shows the trend in the number of reported violent crimes offenses per 100,000 population.

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