County · Iowa
Linn County, Iowa
Linn County, Iowa. Linn County had 232,028 residents in 2025 by the Census Bureau's estimate, up 0.8% since 2020, slower than Iowa (+1.5%). It holds 18 places (18 cities, villages and boroughs) and 54 census tracts. GEOID 19113.
Linn County is one of the 3 counties of the Cedar Rapids, IA metropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
232,028
Census Bureau estimate (no margin published)
2020 Census count: 230,299 · ACS 2020-2024: 230,004
Median household income
$77,649
±$2,246 (90% margin)
Iowa: $75,059
Median home value
$214,300
±$4,605 (90% margin)
Iowa: $208,000
Median gross rent
$945
±$39 (90% margin)
Iowa: $972
How many people live in Linn County, and is it growing?
The 2020 Census counted 230,299 residents in Linn County. The Census Bureau estimates 232,028 for July 1, 2025, up 0.8% since 2020, slower than Iowa (+1.5%). The 2020-2024 American Community Survey puts the population at 230,004 over 717 square miles of land.
| Measure | Linn County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| Total population | 230,004 | 3,210,507 | +6,143 |
| Households | 95,600±577 | 1,315,707 | +4,723 |
| Average household size | 2.35±0.01 | 2.36 | −0.06 |
| Housing units | 103,104±79 | 1,437,699 | +5,832 |
Linn County's population since 2000
From 191,701 in 2000 to 232,028 in 2025: up 21.0%. 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 Linn County?
Linn County holds 18 places: 18 cities, villages and boroughs (incorporated places). The largest is Cedar Rapids with 137,935 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Cedar Rapids | 137,710 | $70,424 |
|---|---|---|
| Marion | 41,535 | $86,743 |
| Hiawatha | 7,183 | $66,270 |
| Mount Vernon | 4,527 | $112,656 |
| Robins | 3,353 | $122,262 |
| Fairfax | 2,828 | $114,375 |
| Center Point | 2,579 | $95,192 |
| Ely | 2,328 | $105,882 |
| Lisbon | 2,233 | $93,906 |
| Palo | 1,407 | $106,375 |
| Central City | 1,264 | $85,400 |
| Springville | 1,154 | $92,656 |
| Coggon | 701 | $76,250 |
| Walker | 688 | $82,656 |
| Alburnett | 675 | $105,357 |
| Walford | 1,366 | $128,750 |
| BertramGEOID 1906175 | 269 | $86,786 |
| PrairieburgGEOID 1964425 | 160 | $45,000 |
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 Linn County?
The median resident of Linn County is 39.0 years old; 22.5% are under 18 and 17.3% are 65 or older. The largest group is non-Hispanic white residents at 82.4%, then non-Hispanic Black residents at 5.9%. 5.6% of residents were born outside the United States.
| Measure | Linn County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| Median age | 39.0±0.3 | 38.6 | +1.3 |
| Under 18 years | 22.5% | 22.9% | – |
| 65 years and over | 17.3%±0.1 pts | 18.1% | – |
| Hispanic or Latino (any race) | 4.1% | 7.3% | +0.9 pts |
| White alone, not Hispanic | 82.4%±0.3 pts | 82.3% | −3.4 pts |
| Black or African American alone, not Hispanic | 5.9%±0.4 pts | 3.8% | no clear change |
| Asian alone, not Hispanic | 2.4%±0.2 pts | 2.5% | no clear change |
| American Indian and Alaska Native alone, not Hispanic | 0.1%±0.1 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.2% | – |
| Two or more races, not Hispanic | 4.7%±0.5 pts | 3.5% | – |
| Some other race alone, not Hispanic | 0.4%±0.2 pts | 0.3% | – |
| Born outside the United States | 5.6%±0.5 pts | 5.9% | +1.2 pts |
| Speak a language other than English at home (age 5+) | 7.1%±0.6 pts | 9.1% | – |
| Civilian veterans (age 18+) | 7.4%±0.5 pts | 6.5% | – |
| With a disability | 11.9%±0.5 pts | 12.6% | – |
| No health insurance coverage | 4.1%±0.4 pts | 5.0% | no clear change |
| High school graduate or higher (age 25+) | 95.2%±0.5 pts | 93.3% | – |
| Bachelor's degree or higher (age 25+) | 34.7%±1.1 pts | 31.4% | +1.6 pts |
| Graduate or professional degree (age 25+) | 11.4%±0.7 pts | 10.5% | – |
| Moved from another state in the past year | 1.8%±0.3 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 Linn County earn?
Half of Linn County's 95,600 households earn less than $77,649 a year (±$2,246), against $75,059 in Iowa. In 2015-2019 it was $79,876 in 2024 dollars; the margins of error cannot tell the two periods apart. 9.4% of residents live below the poverty line.
| Measure | Linn County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $77,649±$2,246 | $75,059 | no clear change |
| Mean household income | $104,478±$3,073 | $98,187 | – |
| Per capita income | $43,820±$1,136 | $40,877 | no clear change |
| People below the poverty line | 9.4%±0.7 pts | 11.1% | no clear change |
| Children under 18 below the poverty line | 11.1%±1.7 pts | 12.9% | no clear change |
| Households receiving SNAP | 8.1%±0.7 pts | 8.8% | – |
| Households with a broadband subscription | 91.6%±0.6 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 Linn County?
Owners occupy 73.5% of Linn County's occupied homes and renters 26.5%. The median owner-occupied home is valued at $214,300 by its owner (±$4,605). The median renter pays $945 a month including utilities, and 35.2% of renters pay 35% or more of their income on rent.
| Measure | Linn County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $214,300±$4,605 | $208,000 | +$21,081 |
| Median gross rent | $945±$39 | $972 | no clear change |
| Renters paying 35% or more of income on rent | 35.2%±2.4 pts | 35.2% | no clear change |
| Median monthly owner costs, with a mortgage | $1,584±$33 | $1,533 | – |
| Owner-occupied homes | 73.5%±1.0 pts | 71.7% | no clear change |
| Housing units | 103,104±79 | 1,437,699 | +5,832 |
| Homeowner vacancy rate | 0.7%±0.2 pts | 0.8% | – |
| Rental vacancy rate | 9.4%±1.7 pts | 5.7% | – |
| Single-family detached homes | 66.7%±1.0 pts | 72.2% | – |
| Mobile homes | 3.4%±0.5 pts | 3.2% | – |
| Built 2020 or later | 1.8%±0.3 pts | 1.7% | – |
| Built 1939 or earlier | 13.7%±0.7 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 Linn County building?
Builders took permits for 941 new housing units across Linn County in 2025 (418 single-family), 4.1 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 Linn County get to work?
75.6% of Linn County's workers drive alone and 14.7% work from home. The average trip to work takes 19.3 minutes. The unemployment rate in 2020-2024 averaged 3.5%.
| Measure | Linn County | Iowa | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 67.7%±0.7 pts | 66.4% | – |
| Unemployment rate | 3.5%±0.5 pts | 3.6% | no clear change |
| Drove alone to work | 75.6%±1.1 pts | 76.0% | – |
| Carpooled | 6.3%±0.7 pts | 7.8% | – |
| Public transportation | 0.6%±0.2 pts | 0.7% | – |
| Walked | 1.8%±0.3 pts | 2.9% | – |
| Worked from home | 14.7%±0.8 pts | 11.3% | +10.9 pts |
| Mean travel time to work | 19.3 min±0.5 | 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 Linn County's census tracts?
Linn County is divided into 54 census tracts. Among those with a reliable estimate, median household income runs from $30,587 (Tract 27) to $171,359 (Tract 2.05).
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Linn County compare with Iowa's other counties?
| Measure | Rank |
|---|---|
| Population | 2nd of 99 |
| Growth 2020-2025 | 24th of 99 |
| Residents per square mile | 3rd of 99 |
| Median household income | 20th of 99 |
| Median home value | 17th of 99 |
| Median gross rent | 14th of 99 |
| Poverty rate | 62nd of 99 |
| Bachelor's degree or higher | 8th of 99 |
| Median age | 82nd 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 Linn 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.