County profile

Jefferson County

Iowa · ACS 2020–2024

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Latest estimates

At a glance

U.S. Census Bureau American Community Survey 5-year estimates.

Total population
15,705
Median household income
$61,620
People below poverty
15.2%
Median home value
$163,400

Income

The median income of households in Jefferson County, Iowa was $61,620. An estimated 7.9% of households had income below $10,000 a year and 5.6% had income of $200,000 or more.

Household Income in Jefferson County, Iowa in 2020-2024

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Percent
Less than $10,000 7.9
$10,000 to $14,999 5.3
$15,000 to $24,999 7.1
$25,000 to $34,999 10.6
$35,000 to $49,999 11
$50,000 to $74,999 17.4
$75,000 to $99,999 12.9
$100,000 to $149,999 17.7
$150,000 to $199,999 4.5
$200,000 or more 5.6

Median Earnings for Full-Time Year-Round Workers by Sex in Jefferson County, Iowa in 2020-2024

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Dollars
Male 61643
Female 48007

An estimated 74.1% of households received earnings. An estimated 43.2% of households received Social Security and an estimated 25.5 % of households received retirement income other than Social Security. The average income from Social Security was $24,091. These income sources are not mutually exclusive; that is, some households received income from more than one source.

Proportion of Households with Various Income Sources in Jefferson County, Iowa in 2020-2024

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Percent
Earnings 74.1
Social Security 43.2
Retirement income 25.5
Supplemental Security Income (SSI) 5
Cash public assistance income 3

Poverty and Participation in Government Programs

In 2020-2024, 15.2 % of people were in poverty. An estimated 12.7% of children under 18 were below the poverty level, compared with 9.9% of people 65 years old and over. An estimated 18.7% of people 18 to 64 years were below the poverty level.

Poverty Rates in Jefferson County, Iowa in 2020-2024

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Percent
People in poverty 15.2
Children under 18 years below poverty 12.7
People 65 years old and over below poverty 9.9
People 18 to 64 years below poverty 18.7

In 2020-2024, 12.9 % of households received SNAP (the Supplemental Nutrition Assistance Program). An estimated 25.9% of households that received SNAP had children under 18, and 34.5% of households that received SNAP had one or more people 60 years and over. An estimated 14.7% of all households receiving SNAP were families with a female householder and no spouse present.


Among the civilian noninstitutionalized population in Jefferson County, Iowa in 2020-2024, 93.3% had health insurance coverage and 6.7% did not have health insurance coverage. Private coverage was 60.1% and public coverage was 49.7%, respectively. The percentage of children under the age of 19 with no health insurance coverage was 0.4%.


In 2020-2024, Jefferson County, Iowa had a total population of 15,705 - 7,621 (48.5%) females and 8,084 (51.5%) males. The median age was 43.7 years. An estimated 17.1% of the population was under 18 years, 32.3% was 19 to 44 years, 22% was 45 to 64 years, and 26.7 % was 65 years and older.

Population by Age and Sex for Jefferson County, Iowa in 2020-2024

Male Female
Under 5 399 326
5 to 9 371 542
10 to 14 381 197
15 to 19 352 437
20 to 24 559 383
25 to 29 829 401
30 to 34 586 595
35 to 39 359 433
40 to 44 494 419
45 to 49 405 345
50 to 54 387 366
55 to 59 282 462
60 to 64 634 569
65 to 69 616 689
70 to 74 784 602
75 to 79 303 365
80 to 84 212 276
85 and over 131 214

Hispanic Origin and Race

For people reporting one race alone, 84.4% were White; 2.5% were Black or African American; 11.6% were American Indian and Alaska Native; 8.2% were Asian; 0.9% were Native Hawaiian and Other Pacific Islander, and 0% were Some Other Race. An estimated 3.5% reported Two or More Races. An estimated 4.1% of the people in Jefferson County, Iowa were Hispanic or Latino. An estimated 82.4% of the people in Jefferson County, Iowa were White alone, non-Hispanic. People of Hispanic origin may be of any race.


Households and Families

In 2020-2024, there were 6,952 households in Jefferson County, Iowa. The average household size was 2.11 people.

Married-couple households made up 43.6% of the households in Jefferson County, Iowa while cohabiting couple households made up 7.5% of households. Female householders with no spouse or partner present were 24.4% of all households, while 24.5% of households had male householders with no spouse or partner present. Some households had one person, as 18.3% of households were male householders living alone, and 18.4% were female householders living alone, for a total of 36.7% of all households.

In Jefferson County, Iowa, 20.3% of all households had one or more people under the age of 18; 40.9% of all households had one or more people 65 years and over.

Types of Households in Jefferson County, Iowa in 2020-2024

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Percent
Married-couple households 43.6
Cohabiting Couples 7.5
Male Householder
No spouse/partner present
24.5
Female Householder
No spouse/partner present
24.4

Marital Status

Among persons 15 and older, 45% of males and 50.5% of females were currently married.

Population 15 years and over Percent
Males
Percent
Females
Never married 38.8 26.8
Now married, except separated 45 50.5
Separated 0.9 0.7
Widowed 4 5.6
Divorced 11.3 16.4

Grandparents and Grandchildren

In Jefferson County, Iowa, 86 grandparents lived with their grandchildren under 18 years old. Of those grandparents, 29.1% were responsible for the basic needs of their grandchildren.


Nativity and Foreign-Born

In 2020-2024, an estimated 85.9% of the people living in Jefferson County, Iowa were U.S. natives. 55% of the Jefferson County, Iowa population were living in the state where they were born.

Approximately 14.1% of Jefferson County, Iowa residents in 2020-2024 were foreign-born. 20.5% of foreign-born were naturalized U.S. citizens and an estimated 23.8 % entered the country before the year 2010.

Foreign-born residents of Jefferson County, Iowa come from different parts of the world. The bar graph below displays the percentage of foreign-born from each world region of birth in 2020-2024 for Jefferson County, Iowa.

Region of Birth for the Foreign-Born Population in Jefferson County, Iowa in 2020-2024

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Percent
Latin America 5.3
Asia 64
Europe 6.4
Africa 21.2
Northern America 2.5
Oceania 0.6

Language

Among people at least five years old living in Jefferson County, Iowa in 2020-2024, 15.9 % spoke a language other than English at home. Spanish was spoken by 1.8% of people at least five years old; 6.9% reported that they did not speak English "very well."

Percentage of the Population 5 years and over who Speak a Language other than English in Jefferson County, Iowa in 2020-2024

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Percent
Spanish 1.8
Other Indo-European languages 3.5
Asian and Pacific Islander languages 6.7
Other languages 3.9

Geographic Mobility

In 2020-2024, 83.4 % of the people at least one year old living in Jefferson County, Iowa were living in the same house one year earlier.

Geographic Mobility of Residents of Jefferson County, Iowa in 2020-2024

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Percent
Same house 83.4
Different house, same county 5.8
Different county, same state 3.1
Different state 4.2
Abroad 3.5

Education

In 2020-2024, 95.1 % of people 25 years and over had at least graduated from high school and 43.2% had a bachelor's degree or higher. An estimated 4.9% did not complete high school.

The total school enrollment in Jefferson County, Iowa was 3,645 in 2020-2024. Nursery school enrollment was 132 and kindergarten through 12th grade enrollment was 1,969. College or graduate school enrollment was 1,544.

Educational Attainment of People in Jefferson County, Iowa in 2020-2024

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Percent
Less than high school diploma 4.9
High school diploma or equivalency 22.5
Some college, no degree 16.9
Associate's degree 12.4
Bachelor's degree 24.5
Graduate or professional degree 18.8

Disability

In Jefferson County, Iowa, among the civilian noninstitutionalized population in 2020-2024, 13.4 % reported a disability. The likelihood of having a disability varied by age - from 6.3% of people under 18 years old, to 13.1% of people 18 to 64 years old, and to 18.8% of those 65 and over.


Employment Status and Type of Employer

In Jefferson County, Iowa, 54.3 % of the population 16 and over were employed; 41% were not currently in the labor force.

An estimated 79.4% of the people employed were private wage and salary workers; 10.9% were federal, state, or local government workers; and 9.3 % were self-employed in their own (not incorporated) business.

Class of worker Number Percent
Private wage and salary workers 5,752 79.4
Federal, state, or local government workers 789 10.9
Self-employed workers in own not incorporated business 671 9.3

Industries

In 2020-2024, the civilian employed population 16 years and older in Jefferson County, Iowa worked in the following industries:

Percent by Industry in Jefferson County, Iowa in 2020-2024

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Percent
Agriculture, forestry, fishing and hunting, and mining 1.4
Construction 9.1
Manufacturing 12
Wholesale trade 1.1
Retail trade 13.6
Transportation and warehousing, and utilities 1.1
Information 1.8
Finance and insurance, and real estate and rental and leasing 11.4
Professional, scientific, and management, and administrative and waste management services 8.7
Educational services, and health care and social assistance 26.1
Arts, entertainment, and recreation, and accommodation, and food services 5
Other Services, except public administration 6.3
Public administration 2.4

Occupations

Occupations for the Civilian Employed Population 16 Years and over in Jefferson County, Iowa in 2020-2024

Civilian employed population 16 years and over Number Percent
Management, business, sciences, and arts occupations 2,984 41.2
Service occupations 951 13.1
Sales and office occupations 1,519 21
Natural resources, construction, and maintenance occupations 786 10.8
Production, transportation, and material moving occupations 1,008 13.9

Commuting to Work

An estimated 69.7% of Jefferson County, Iowa workers drove to work alone in 2020-2024, and 4.3% carpooled. Among those who commuted to work, it took them on average 15.9 minutes to get to work.

Percent of Workers 16 and over Commuting by Mode in Jefferson County, Iowa in 2020-2024

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Percent
Car, truck, van -- drove alone 69.7
Car, truck, van -- carpooled 4.3
Public transportation (excluding taxicab) 0.5
Walked 4.4
Other means 3
Worked from home 18.2

In 2020-2024, Jefferson County, Iowa had a total of 7,706 housing units. Of these housing units, 77.1% were single-family houses either not attached to any other structure or attached to one or more structures (commonly referred to as "townhouses" or "row houses"). 16.4% of the housing units were located in multi-unit structures, or those buildings that contained two or more apartments. 6.4% were mobile homes, while any remaining housing units were classified as "other," which included boats, recreational vehicles, vans, etc.

Types of Housing Units in Jefferson County, Iowa in 2020-2024

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Percent
Single-family houses 77.1
Apartments in multi-unit structures 16.4
Mobile homes 6.4
Boat, RV, van, etc 0

7.8% of the housing inventory was comprised of houses built since 2010, while 32.9% of the houses were first built in 1939 or earlier. The median number of rooms in all housing units in Jefferson County, Iowa was 5.6 rooms, and of these housing units 54.2% had three or more bedrooms.


In 2020-2024, Jefferson County, Iowa had 6,952 housing units that were occupied or had people living in them, while the remaining 754 were vacant. Of the occupied housing units, the percentage of these houses occupied by owners (also known as the homeownership rate) was 67.7% while renters occupied 32.3%. The average household size of owner-occupied houses was 2.3 and in renter-occupied houses it was 1.7.

5% of householders of these occupied houses had moved into their house since 2021, while 11.8% moved into their house in 1989 or earlier. Households without a vehicle available for personal use comprised 7.5% and another 20.4% had three or more vehicles available for use.

The following chart provides the primary fuel used to heat houses in Jefferson County, Iowa:

House Heating Fuel Used in Jefferson County, Iowa in 2020-2024

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Percent
Gas 72.4
Electricity 22.4
Fuel oil, kerosene, etc 0
All other fuels 4.5
No fuel used 0.6

In 2020-2024, the median property value for owner-occupied houses in Jefferson County, Iowa was $163,400.

Of the owner-occupied households, 45 % had a mortgage. 55% owned their houses "free and clear," that is without a primary mortgage or loan on the house. The median monthly housing costs for owners with a mortgage was $1,380 and for owners without a mortgage it was $593.

For renter-occupied houses, the median gross rent for Jefferson County, Iowa was $883. Gross rent includes the monthly contract rent and any monthly payments made for electricity, gas, water and sewer, and any other fuels to heat the house.