County · Iowa
Adams County, Iowa
Adams County, Iowa. Adams County had 3,617 residents in 2025 by the Census Bureau's estimate, down 2.5% since 2020, while Iowa grew 1.5%. It holds 5 places (5 cities, villages and boroughs) and 2 census tracts. GEOID 19003.
Residents, July 2025 estimate
3,617
Census Bureau estimate (no margin published)
2020 Census count: 3,704 · ACS 2020-2024: 3,622
Median household income
$71,875
±$7,511 (90% margin)
Iowa: $75,059
Median home value
$131,600
±$26,979 (90% margin)
Iowa: $208,000
Median gross rent
$893
±$190 (90% margin)
Iowa: $972
How many people live in Adams County, and is it growing?
The 2020 Census counted 3,704 residents in Adams County. The Census Bureau estimates 3,617 for July 1, 2025, down 2.5% since 2020, while Iowa grew 1.5%. The 2020-2024 American Community Survey puts the population at 3,622 over 423 square miles of land.
| Measure | Adams County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| Total population | 3,622 | 3,210,507 | −48 |
| Households | 1,540±92 | 1,315,707 | no clear change |
| Average household size | 2.29±0.13 | 2.36 | no clear change |
| Housing units | 1,889±24 | 1,437,699 | −117 |
Adams County's population since 2000
From 4,482 in 2000 to 3,617 in 2025: down 19.3%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Adams County?
Adams County holds 5 places: 5 cities, villages and boroughs (incorporated places). The largest is Corning with 1,511 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Adams County?
The median resident of Adams County is 46.3 years old; 22.3% are under 18 and 24.2% are 65 or older. The largest group is non-Hispanic white residents at 94.5%, then non-Hispanic residents of two or more races at 3.2%.
| Measure | Adams County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| Median age | 46.3±0.8 | 38.6 | −1.0 |
| Under 18 years | 22.3%±0.5 pts | 22.9% | – |
| 65 years and over | 24.2%±0.3 pts | 18.1% | – |
| Hispanic or Latino (any race) | 1.7% | 7.3% | +0.4 pts |
| White alone, not Hispanic | 94.5%±0.7 pts | 82.3% | −3.5 pts |
| Black or African American alone, not Hispanic | 0.3%±0.3 pts | 3.8% | – |
| Asian alone, not Hispanic | 0.0%±0.7 pts | 2.5% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.2%±0.4 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.7 pts | 0.2% | – |
| Two or more races, not Hispanic | 3.2%±0.9 pts | 3.5% | – |
| Some other race alone, not Hispanic | 0.1%±0.1 pts | 0.3% | – |
| Born outside the United States | 0.5%±0.4 pts | 5.9% | – |
| Speak a language other than English at home (age 5+) | 2.5%±1.4 pts | 9.1% | – |
| Civilian veterans (age 18+) | 9.1%±1.6 pts | 6.5% | – |
| With a disability | 13.7%±2.9 pts | 12.6% | – |
| No health insurance coverage | 3.3%±1.8 pts | 5.0% | no clear change |
| High school graduate or higher (age 25+) | 93.9%±2.2 pts | 93.3% | – |
| Bachelor's degree or higher (age 25+) | 27.0%±3.6 pts | 31.4% | +11.4 pts |
| Graduate or professional degree (age 25+) | 5.8%±2.1 pts | 10.5% | – |
| Moved from another state in the past year | 0.8%±0.5 pts | 2.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Adams County earn?
Half of Adams County's 1,540 households earn less than $71,875 a year (±$7,511), against $75,059 in Iowa. In 2015-2019 the median was $60,618 in 2024 dollars, so it rose by $11,257 after inflation. 9.1% of residents live below the poverty line.
| Measure | Adams County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $71,875±$7,511 | $75,059 | +$11,257 |
| Mean household income | $103,589±$17,427 | $98,187 | – |
| Per capita income | $44,632±$7,392 | $40,877 | +$9,631 |
| People below the poverty line | 9.1%±2.5 pts | 11.1% | −5.0 pts |
| Children under 18 below the poverty line | 6.8%±3.9 pts | 12.9% | −9.6 pts |
| Households receiving SNAP | 9.5%±3.6 pts | 8.8% | – |
| Households with a broadband subscription | 84.8%±3.5 pts | 88.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Adams County?
Owners occupy 77.1% of Adams County's occupied homes and renters 22.9%. The median owner-occupied home is valued at $131,600 by its owner (±$26,979). The median renter pays $893 a month including utilities, and 25.5% of renters pay 35% or more of their income on rent.
| Measure | Adams County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $131,600±$26,979 | $208,000 | no clear change |
| Median gross rent | $893±$190 | $972 | no clear change |
| Renters paying 35% or more of income on rent | 25.5%±11.6 pts | 35.2% | +15.4 pts |
| Median monthly owner costs, with a mortgage | $1,313±$127 | $1,533 | – |
| Owner-occupied homes | 77.1%±4.5 pts | 71.7% | no clear change |
| Housing units | 1,889±24 | 1,437,699 | −117 |
| Homeowner vacancy rate | 4.6%±3.2 pts | 0.8% | – |
| Rental vacancy rate | 7.6%±6.2 pts | 5.7% | – |
| Single-family detached homes | 84.1%±4.0 pts | 72.2% | – |
| Mobile homes | 9.2%±3.2 pts | 3.2% | – |
| Built 2020 or later | 1.3%±0.9 pts | 1.7% | – |
| Built 1939 or earlier | 37.1%±4.9 pts | 23.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Adams County building?
Builders took permits for 12 new housing units across Adams County in 2025 (12 single-family), 3.3 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Adams County get to work?
77.1% of Adams County's workers drive alone and 10.0% work from home. The average trip to work takes 19.1 minutes. The unemployment rate in 2020-2024 averaged 3.9%.
| Measure | Adams County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 60.0%±3.2 pts | 66.4% | – |
| Unemployment rate | 3.9%±2.0 pts | 3.6% | no clear change |
| Drove alone to work | 77.1%±4.1 pts | 76.0% | – |
| Carpooled | 10.6%±3.5 pts | 7.8% | – |
| Public transportation | 0.0%±1.5 pts | 0.7% | – |
| Walked | 1.7%±1.2 pts | 2.9% | – |
| Worked from home | 10.0%±3.1 pts | 11.3% | no clear change |
| Mean travel time to work | 19.1 min±1.9 | 19.8 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Adams County's census tracts?
Adams County is divided into 2 census tracts. Among those with a reliable estimate, median household income runs from $62,266 (Tract 9502) to $88,083 (Tract 9501).
| Tract 950119003950100 | 1,560±129 | $88,083 |
|---|---|---|
| Tract 950219003950200 | 2,062±129 | $62,266 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Adams County compare with Iowa's other counties?
| Measure | Rank |
|---|---|
| Population | 99th of 99 |
| Growth 2020-2025 | 79th of 99 |
| Residents per square mile | 98th of 99 |
| Median household income | 43rd of 99 |
| Median home value | 78th of 99 |
| Median gross rent | 23rd of 99 |
| Poverty rate | 67th of 99 |
| Bachelor's degree or higher | 22nd of 99 |
| Median age | 6th of 99 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Adams County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.