Jefferson County, ID

County

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2024 Population

33,154

US Senator

Mike Crapo

Republican Party

US Senator

Jim Risch

Republican Party

2024 Median Age

32.8

1.55% 1-year increase

2024 Poverty Rate

9.68%

4.72% 1-year increase

2024 Median Household Income

$86,679

4.49% 1-year growth

2024 Median Property Value

$408,400

21.9% 1-year growth

2024 Employed Population

15,329

3.53% 1-year growth

About

None of the households in Jefferson County, ID 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.

97.7% of the residents in Jefferson County, ID are U.S. citizens.

In 2024, the median property value in Jefferson County, ID was $408,400, and the homeownership rate was 83%.

Most people in Jefferson County, ID drove alone to work, and the average commute time was 25.1 minutes. The average car ownership in Jefferson County, ID was 3 cars per household.

Jefferson County, ID borders Bingham County, ID, Bonneville County, ID, Butte County, ID, Clark County, ID, Fremont County, ID, and Madison County, ID.

United States Idaho Idaho Falls, ID

Population & Diversity

Jefferson County, ID is home to a population of 33.2k people, from which 97.7% are citizens. As of 2024, 4.18% of Jefferson County, ID residents were born outside of the country (1.39k people).

In 2024, there were 18 times more White (Non-Hispanic) residents (28.4k people) in Jefferson County, ID than any other race or ethnicity. There were 1.58k Two Races Including Other (Hispanic) and 1.15k Other (Hispanic) residents, the second and third most common ethnic groups.

Population & Diversity

Citizenship

97.7%

2024 Citizenship

97.3%

2023 Citizenship

As of 2024, 97.7% of Jefferson County, ID residents were US citizens, which is higher than the national average of 93.2%. In 2023, the percentage of US citizens in Jefferson County, ID was 97.3%, meaning that the rate of citizenship has been increasing.

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

Diversity

Race and Ethnicity

The 3 largest ethnic groups in Jefferson County, ID

White (Non-Hispanic)
28.4k ± 152
Two Races Including Other (Hispanic)
1.58k ± 352
Other (Hispanic)
1.15k ± 284

11%

Hispanic Population

3.64k people

11% of the people in Jefferson County, ID are hispanic (3.64k people).

The following chart shows the 8 races represented in Jefferson County, ID as a share of the total population.

Global Diversity

The PUMS dataset is not available at the County level, so we are showing data for Idaho.

Most Common Origin

Mexico
52,214 ± 5,532 people
Canada
6,433 ± 1,966 people
Philippines
2,829 ± 1,305 people

In 2023, the most common birthplace for the foreign-born residents of Idaho was Mexico, the natal country of 52,214 Idaho residents, followed by Canada with 6,433 and Philippines with 2,829.

Foreign-Born Population

4.18%

2024 Foreign-Born Population

1.39k people

4.32%

2023 Foreign-Born Population

1.39k people

As of 2024, 4.18% of Jefferson County, ID residents (1.39k 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 Jefferson County, ID was 4.32%, meaning that the rate has been decreasing.

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

Military

Veterans

Most Common Service Period

Vietnam
343 ± 109
Gulf War (2001-)
328 ± 143
Gulf War (1990s)
304 ± 120

Jefferson County, ID has a large population of military personnel who served in Vietnam, 1.05 times greater than any other conflict.

The chart shows the distribution of veterans by conflict in Jefferson County, ID.

Economy

The economy of Jefferson County, ID employs 15.3k people. In 2024, the largest industries in Jefferson County, ID were Health Care & Social Assistance (2,055 people), Construction (1,769 people), and Educational Services (1,748 people), and the highest paying industries were Utilities ($111,941), Information ($111,688), and Professional, Scientific, & Technical Services ($84,661).

Employment

Occupations

15.3k

2024 Value

± 922

3.53%

1 Year growth

± 8.4%

From 2023 to 2024, employment in Jefferson County, ID grew at a rate of 3.53%, from 14.8k employees to 15.3k employees.

The most common job groups, by number of people living in Jefferson County, ID, are Management Occupations (1,776 people), Office & Administrative Support Occupations (1,475 people), and Construction & Extraction Occupations (1,237 people). This chart illustrates the share breakdown of the primary jobs held by residents of Jefferson County, ID.

Unemployment Insurance Claims

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

This chart shows weekly unemployment insurance claims in Idaho (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.

Industries

Employment by Industries

15.3k

2024 Value

± 922

3.53%

1 Year growth

± 8.4%

From 2023 to 2024, employment in Jefferson County, ID grew at a rate of 3.53%, from 14.8k employees to 15.3k employees.

The most common employment sectors for those who live in Jefferson County, ID, are Health Care & Social Assistance (2,055 people), Construction (1,769 people), and Educational Services (1,748 people). This chart shows the share breakdown of the primary industries for residents of Jefferson County, ID, though some of these residents may live in Jefferson County, ID and work somewhere else. Census data is tagged to a residential address, not a work address.

Median Earnings by Industry

$58,679

Median earning men ± $5,420

$27,532

Median earning women ± $3,676

The industries with the best median earnings for men in 2024 are Information ($111,438), Public Administration ($89,107), and Finance & Insurance, & Real Estate & Rental & Leasing ($88,625).

The industries with the best median earnings for women in 2024 are Information ($150,238), Transportation & Warehousing, & Utilities ($49,485), and Public Administration ($45,625).

Employment by Industry Sector

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

Y-Axis

3.01%

Year-over-year growth

Employment change between February 2022 and February 2023

As of February 2023, there are 836k people employed in Idaho. This represents a 3.01% 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 8.06%.

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

Establishments by Size

The industries with the most establishments

129
Construction
51
Transportation and Warehousing
41
Professional, Scientific, and Technical Services

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.

Payroll by Industry Sector

The industries with the highest total annual payroll

$50.4k
Construction
$45k
Manufacturing
$31.3k
Wholesale Trade

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

Civics

In the 2024 presidential election, the popular vote in Idaho went to Donald J. Trump with 66.9% of the vote. The runner-up was Kamala Harris (30.4%), followed by Robert Kennedy (1.42%).

Mike Crapo and Jim Risch are the senators currently representing the state of Idaho. In the United States, senators are elected to 6-year terms with the terms for individual senators staggered.

Idaho is currently represented by 2 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 Jefferson County, ID. Showing the available data for Idaho.

2024 Election Results

Donald J. Trump (66.9%)
Republican Party
Kamala Harris (30.4%)
Democratic Party
Robert Kennedy (1.42%)
Independent Party

In the 2024 presidential election, the popular vote in Idaho went to Donald J. Trump with 66.9% of the vote. The runner-up was Kamala Harris (30.4%), followed by Robert Kennedy (1.42%).

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

Senator Elections

US Senators from Idaho

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

Mike Crapo

Senator from Idaho

Assumed office on January 3, 1999

Jim Risch

Senator from Idaho

Assumed office on January 3, 2009

Mike Crapo and Jim Risch are the senators currently representing Idaho.

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 Idaho over time, excluding special elections, colored by their political party.

Housing & Living

The median property value in Jefferson County, ID was $408,400 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 $335,000 to $408,400, a 21.9% increase. The homeownership rate in Jefferson County, ID is 83%, which is higher than the national average of 65.2%.

People in Jefferson County, ID have an average commute time of 25.1 minutes, and they drove alone to work. Car ownership in Jefferson County, ID is higher than the national average, with an average of 3 cars per household.

In 2025, 13.3% of the population was living with severe housing problems in Jefferson County, ID. From 2014 to 2025, the indicator grew 0.769%.

Housing

Property

$408,400

Median Property Value 2024

±$21,935

$8,468

Median Property Taxes

±$623

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 Jefferson County, ID the largest share of households pay taxes in the $800 - $1,499 range.

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

Rent vs Own

83%

Homeownership

2024

69.3%

Homeowners with Mortgage

2024

In 2024, 83% of the housing units in Jefferson County, ID were occupied by their owner. This percentage grew from the previous year's rate of 82.4%.

This chart shows the percentage of owner in Jefferson County, ID compared it's parent and neighboring geographies.

Equity

Household Income

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

$86,679

Median Household Income

± $3,818

10.2k

Number of Households

± 688

In 2024, the median household income of the 10.2k households in Jefferson County, ID grew to $86,679 from the previous year's value of $82,952.

The following chart displays the households in Jefferson County, ID 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 $75k - $100k range.

Wage Distribution

The closest comparable wage GINI for Jefferson County, ID is from Idaho.

0.468

2023 Wage GINI in Idaho

0.473

2022 Wage GINI in Idaho

In 2023, the income inequality in Idaho was 0.468 according to the GINI calculation of the wage distribution. Income inequality had a 0.938% decline from 2022 to 2023, which means that wage distribution grew somewhat more even. The GINI for Idaho was lower than than the national average of 0.476. In other words, wages are distributed more evenly in Idaho in comparison to the national average.

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

Transportation

Commuter Transportation

Most Common Commute in 2024

Drove Alone (78.4%)
Carpooled (9.7%)
Worked At Home (7.62%)

In 2024, 78.4% of workers in Jefferson County, ID drove alone to work, followed by those who carpooled to work (9.7%) and those who worked at home (7.62%).

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

25.1 minutes

Average Travel Time

Using averages, employees in Jefferson County, ID have a shorter commute time (25.1 minutes) than the normal US worker (26.4 minutes). Additionally, 3.36% of the workforce in Jefferson County, ID have "super commutes" in excess of 90 minutes.

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

Car Ownership

3 cars

Average Number

The following chart displays the households in Jefferson County, ID distributed between a series of car ownership buckets compared to the national averages for each bucket. The largest share of households in Jefferson County, ID have 3 cars.

Poverty

Severe Housing Problems

In 2025, 13.3% of the population was living with severe housing problems in Jefferson County, ID. From 2014 to 2025, the indicator grew 0.769%.

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

Poverty & Diversity

9.68% of the population for whom poverty status is determined in Jefferson County, ID (3.19k out of 33k 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 6 - 11, followed by Females 25 - 34 and then Males 6 - 11.

The most common racial or ethnic group living below the poverty line in Jefferson County, ID is White, followed by Hispanic 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.

Children in Poverty

In 2025, 8.9% of the children was living in poverty in Jefferson County, ID. From 2014 to 2025, the indicator declined 9.2%.

The graph shows the trend of the percentage of the children 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.

Security

Crimes & Accidents

Indicator

In 2022, the number of reported violent crimes offenses per 100,000 population was 51.1 in Jefferson County, ID. From 2014 to 2022, the indicator declined 67.2 per 100,000 population.

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

Health

92.2% of the population of Jefferson County, ID has health coverage, with 50.2% on employee plans, 17.5% on Medicaid, 9.25% on Medicare, 14.2% on non-group plans, and 1.01% on military or VA plans.

Primary care physicians in Jefferson County, ID see 4,600 patients per year on average, which represents a 0% change from the previous year (4,600 patients). Compare this to dentists who see 4775 patients per year, and mental health providers who see 3420 patients per year.

By gender, of the total number of insured persons, 51.1% were men and 48.9% were women.

Coverage

Patient to Clinician Ratios

4,600 to 1

Patient to Primary Care Physician Ratio in Jefferson County, ID

Primary care physicians in Jefferson County, ID see an average of 4,600 patients per year. This represents a 0% change from the previous year (4,600 patients).

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

Health Care Diversity

In 2024, insured persons according to age ranges were distributed in 34.5% under 18 years, 18% between 18 and 34 years, 35.7% between 35 and 64 years, and 11.8% over 64 years.

By gender, of the total number of insured persons, 51.1% were men and 48.9% were women.

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

Uninsured People

7.76%

Uninsured

50.2%

Employer Coverage

17.5%

Medicaid

9.25%

Medicare

14.2%

Non-Group

1.01%

Military or VA

Between 2023 and 2024, the percent of uninsured citizens in Jefferson County, ID declined by 10% from 8.62% to 7.76%.

The following chart shows how the percent of uninsured individuals in Jefferson County, ID changed over time compared with the percent of individuals enrolled in various types of health insurance.

Health Indicators

Health Outcomes

Indicator

In 2025, the number of deaths among residents under age 18 per 100,000 population was 48.9 in Jefferson County, ID.

The graphic shows the trend of the indicator in Jefferson County, ID.

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 37.2% in Jefferson County, ID.

The graphic shows the trend of the indicator in Jefferson County, ID.