Data / Linn County / Profile

Linn County in figures

A profile of Linn County from official statistics: 24 figures in 6 sections, each with its period, its change from a year earlier, its rank among similar places where a ranking exists, and its source.

Figures last updated on 2026-10-12.

People

Population in Linn County was 232,028 in 2025, up 0.7% from 2024, and the 2nd highest of 99 counties in Iowa.

Population232,0282025Up 0.7% from 2024The 2nd highest of 99 counties in Iowa
Median age39 years2024Up 0.5 years from 2023Tied for the 16th lowest of 99 counties in Iowa
Population aged 65 and over19%2025Up 0.4 percentage points from 2024The 9th lowest of 99 counties in Iowa
Foreign-born population share5.6%2024Up 0.3 percentage points from 2023
Population density124.9 inhabitants per km²2025Up 0.7% from 2024
Net domestic migration, July to June6292025, estimatedCompared with 267 in 2024
228K229K230K231K232K233K2020202120222023202420252020: 230,405 persons2021: 229,479 persons2022: 228,878 persons2023: 228,775 persons2024: 230,389 persons2025: 232,028 persons
Population, 2020 to 2025. persons. Source: U.S. Census Bureau, Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program).

Sources: U.S. Census Bureau, Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program); U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population; U.S. Census Bureau, Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties; U.S. Census Bureau, American Community Survey 5-year estimates, table B05002: foreign-born population as a percentage of the total population, calculated with stored inputs; U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km²; U.S. Census Bureau, Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Population and demography statistics and rankings

Work and income

Unemployment rate in Linn County was 4% (provisional) in August 2026, down 1.1 percentage points from August 2025, and tied for the 14th highest of 99 counties in Iowa.

Unemployment rate4%August 2026, provisionalDown 1.1 percentage points from August 2025Tied for the 14th highest of 99 counties in Iowa
Median household income$77,6492024Up 1.6% from 2023The 20th highest of 99 counties in Iowa
Per capita personal income$66,5252024Up 4.1% from 2023The 34th highest of 99 counties in Iowa
Poverty rate (US official measure)9.6%2024Down 0.3 percentage points from 2023
Gini index44.72024Up 0.1 points from 2023
234562021-072022-042023-012023-102024-072025-042026-082021-07: 4.8 %2021-08: 4.5 %2021-09: 3.6 %2021-10: 3.3 %2021-11: 3 %2021-12: 2.9 %2022-01: 3.7 %2022-02: 3.1 %2022-03: 2.9 %2022-04: 2.2 %2022-05: 2.6 %2022-06: 3 %2022-07: 3.4 %2022-08: 3.6 %2022-09: 3 %2022-10: 3.1 %2022-11: 3.1 %2022-12: 3.1 %2023-01: 3.8 %2023-02: 3.4 %2023-03: 3.3 %2023-04: 2.5 %2023-05: 3.2 %2023-06: 3.5 %2023-07: 3.6 %2023-08: 4.6 %2023-09: 3.2 %2023-10: 3.2 %2023-11: 2.9 %2023-12: 3 %2024-01: 3.7 %2024-02: 3.9 %2024-03: 3.1 %2024-04: 2.5 %2024-05: 3.2 %2024-06: 3.9 %2024-07: 3.8 %2024-08: 3.8 %2024-09: 3.1 %2024-10: 3.4 %2024-11: 3.5 %2024-12: 3.4 %2025-01: 4.2 %2025-02: 3.9 %2025-03: 3.8 %2025-04: 3.2 %2025-05: 3.5 %2025-06: 3.8 %2025-07: 4 %2025-08: 5.1 %2025-09: 3.5 %2025-11: 3.6 %2025-12: 3.4 %2026-01: 3.7 %2026-02: 4.1 %2026-03: 3.4 %2026-04: 2.7 %2026-05: 3 %2026-06: 3.3 %2026-07: 3.8 %2026-08: 4 %
Unemployment rate, July 2021 to August 2026. %. Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics: unemployment rate by county, not seasonally adjusted.

Sources: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics: unemployment rate by county, not seasonally adjusted; U.S. Census Bureau, American Community Survey 5-year estimates, table B19013: median household income in the past 12 months; U.S. Bureau of Economic Analysis, CAINC1: county annual personal income summary, per capita personal income, current dollars, individual counties and county equivalents; U.S. Census Bureau, Small Area Income and Poverty Estimates (SAIPE): percent of people of all ages in poverty, states and counties; U.S. Census Bureau, American Community Survey 5-year estimates, table B19083: Gini index of household income inequality (coefficient multiplied by 100). Labor market statistics and rankings

Economy

GDP (US dollars) in Linn County was $21.9 billion in 2024, up 4.1% from 2023, and the 2nd highest of 99 counties in Iowa.

Gross domestic product (GDP), US dollars$21.9 billion2024Up 4.1% from 2023The 2nd highest of 99 counties in Iowa
GDP per capita, US dollars$94,4902024Up 3% from 2023The 10th highest of 99 counties in Iowa
Real GDP growth1.2%2024Up 2.5 percentage points from 2023Tied for the 46th lowest of 99 counties in Iowa
5,00010K15K20K25K20012005200920132017202120242001: 8,456.9 USD million2002: 8,411.4 USD million2003: 9,218.5 USD million2004: 10,216.3 USD million2005: 10,911.1 USD million2006: 11,160 USD million2007: 12,404.2 USD million2008: 12,348 USD million2009: 12,944.9 USD million2010: 13,687.8 USD million2011: 14,189.1 USD million2012: 14,306 USD million2013: 14,206.1 USD million2014: 15,156.8 USD million2015: 16,044.4 USD million2016: 16,761.1 USD million2017: 16,867.1 USD million2018: 17,484.7 USD million2019: 17,399.6 USD million2020: 17,561.6 USD million2021: 19,220.9 USD million2022: 20,289.4 USD million2023: 21,037.4 USD million2024: 21,899.2 USD million
Gross domestic product (GDP), US dollars, 2001 to 2024. USD million. Source: U.S. Bureau of Economic Analysis, CAGDP1: county GDP summary, current-dollar GDP (published in thousands of dollars, shown in millions).

Sources: U.S. Bureau of Economic Analysis, CAGDP1: county GDP summary, current-dollar GDP (published in thousands of dollars, shown in millions); Invokely, GDP in current dollars (BEA SAGDP2 and CAGDP1) divided by mid-year population (BEA SAINC1 and CAINC1); U.S. Bureau of Economic Analysis, CAGDP11: annual percent change in real GDP, all industry total, individual counties and county equivalents. Economy statistics and rankings

Prices and housing

Median home value in Linn County was $214,300 in 2024, up 4.8% from 2023, and the 17th highest of 99 counties in Iowa.

Median home value$214,3002024Up 4.8% from 2023The 17th highest of 99 counties in Iowa
County house price annual change, sales and refinances3.02%2025Down 0.53 percentage points from 2024The 42nd lowest of 96 counties in Iowa
Median gross rent (monthly)$9452024Up 3.3% from 2023The 14th highest of 99 counties in Iowa
Homeownership rate (US, housing units)73.5%2024Up 0.2 percentage points from 2023
Housing units authorized by building permits9412025, estimatedDown 8.1% from 2024
160K170K180K190K200K210K220K20212022202320242021: 167,000 USD2022: 188,800 USD2023: 204,400 USD2024: 214,300 USD
Median home value, 2021 to 2024. USD. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25077: median value (dollars), owner-occupied housing units.

Sources: U.S. Census Bureau, American Community Survey 5-year estimates, table B25077: median value (dollars), owner-occupied housing units; Federal Housing Finance Agency, FHFA developmental all-transactions county house prices, published annual percent change, nominal, not seasonally adjusted; U.S. Census Bureau, American Community Survey 5-year estimates, table B25064: median gross rent (dollars), renter-occupied housing units paying cash rent; U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: owner-occupied housing units as a percentage of occupied housing units, calculated with stored inputs; U.S. Census Bureau, Building Permits Survey: final annual county estimates of new privately owned housing units authorized, including imputation. Housing statistics and rankings

Business and tourism

Employer firms in Linn County were 4,262 in 2023, down 0.6% from 2022, and the 2nd highest of 99 counties in Iowa.

Employer firms4,2622023Down 0.6% from 2022The 2nd highest of 99 counties in Iowa
Farms1,4162022No 2021 figure to compareThe 6th highest of 99 counties in Iowa
4,0504,1004,1504,2004,2504,30019992003200720112015201920231999: 4,090 count2000: 4,090 count2001: 4,062 count2002: 4,087 count2003: 4,092 count2004: 4,151 count2005: 4,209 count2006: 4,262 count2007: 4,272 count2008: 4,215 count2009: 4,150 count2010: 4,149 count2011: 4,089 count2012: 4,097 count2013: 4,109 count2014: 4,113 count2015: 4,109 count2016: 4,129 count2017: 4,149 count2018: 4,203 count2019: 4,240 count2020: 4,190 count2021: 4,237 count2022: 4,288 count2023: 4,262 count
Employer firms, 1999 to 2023. count. Source: U.S. Census Bureau, Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties.

Sources: U.S. Census Bureau, Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties; U.S. Department of Agriculture, National Agricultural Statistics Service, Census of Agriculture: number of farms, nation, states and counties (1997 to 2022). Companies statistics and rankings

Energy and environment

Median Air Quality Index (US EPA) in Linn County was 44 in 2025, unchanged from 2024, and the 6th highest of 19 counties in Iowa in 2016.

Median Air Quality Index (US EPA)442025Unchanged from 2024The 6th highest of 19 counties in Iowa in 2016
Share of days with good air quality (US EPA AQI)61.4%2025Down 2.8 percentage points from 2024The 6th lowest of 19 counties in Iowa in 2016
Average annual temperature49.8 °F2025Down 1.7 °F from 2024Tied for the 49th lowest of 99 counties in Iowa
354045505520012005200920132017202120252001: 52 index2002: 51 index2003: 51 index2004: 47 index2005: 52 index2006: 38 index2007: 38 index2008: 54 index2009: 52 index2010: 53 index2011: 52 index2012: 52 index2013: 52 index2014: 50 index2015: 48 index2016: 47 index2017: 45 index2018: 50 index2019: 43 index2020: 47 index2021: 52 index2022: 48 index2023: 54 index2024: 44 index2025: 44 index
Median Air Quality Index (US EPA), 2001 to 2025. index. Source: U.S. Environmental Protection Agency, EPA AirData annual AQI by county: median daily AQI.

Sources: U.S. Environmental Protection Agency, EPA AirData annual AQI by county: median daily AQI; U.S. Environmental Protection Agency, EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts; NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December average temperature, counties. Environment and emissions statistics and rankings

Sources and citations

Each figure comes from the table cited here. Cite the publisher; these citations include any notice the publisher requires.

  1. U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.
  2. U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Retrieved 2026-10-08.
  3. U.S. Census Bureau. Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv. Retrieved 2026-10-09.
  4. U.S. Census Bureau. American Community Survey 5-year estimates, table B05002: foreign-born population as a percentage of the total population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b05002.dat. Retrieved 2026-10-09.
  5. U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.
  6. U.S. Census Bureau. Population Estimates Program: net domestic migration, states and counties, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
  7. U.S. Bureau of Labor Statistics. Local Area Unemployment Statistics: unemployment rate by county, not seasonally adjusted. https://download.bls.gov/pub/time.series/la/la.data.0.CurrentU25-29. Retrieved 2026-10-08.
  8. U.S. Census Bureau. American Community Survey 5-year estimates, table B19013: median household income in the past 12 months. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b19013.dat. Retrieved 2026-10-08.
  9. U.S. Bureau of Economic Analysis. CAINC1: county annual personal income summary, per capita personal income, current dollars, individual counties and county equivalents. https://apps.bea.gov/regional/zip/CAINC1.zip. Retrieved 2026-10-11.
  10. U.S. Census Bureau. Small Area Income and Poverty Estimates (SAIPE): percent of people of all ages in poverty, states and counties. https://www2.census.gov/programs-surveys/saipe/datasets/2024/2024-state-and-county/est24all.txt. Retrieved 2026-10-08.
  11. U.S. Census Bureau. American Community Survey 5-year estimates, table B19083: Gini index of household income inequality (coefficient multiplied by 100). https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b19083.dat. Retrieved 2026-10-10.
  12. U.S. Bureau of Economic Analysis. CAGDP1: county GDP summary, current-dollar GDP (published in thousands of dollars, shown in millions). https://apps.bea.gov/regional/zip/CAGDP1.zip. Retrieved 2026-10-08.
  13. Invokely calculation from GDP in current dollars (BEA SAGDP2 and CAGDP1) divided by mid-year population (BEA SAINC1 and CAINC1). https://invokely.ai/docs/methodology#gdp_per_capita_usd. Retrieved 2026-10-09.
  14. U.S. Bureau of Economic Analysis. CAGDP11: annual percent change in real GDP, all industry total, individual counties and county equivalents. https://apps.bea.gov/regional/zip/CAGDP11.zip. Retrieved 2026-10-08.
  15. U.S. Census Bureau. American Community Survey 5-year estimates, table B25077: median value (dollars), owner-occupied housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25077.dat. Retrieved 2026-10-09.
  16. Federal Housing Finance Agency (FHFA). FHFA developmental all-transactions county house prices, published annual percent change, nominal, not seasonally adjusted. https://www.fhfa.gov/hpi/download/annual/hpi_at_county.xlsx. Retrieved 2026-10-10.
  17. U.S. Census Bureau. American Community Survey 5-year estimates, table B25064: median gross rent (dollars), renter-occupied housing units paying cash rent. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25064.dat. Retrieved 2026-10-09.
  18. U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: owner-occupied housing units as a percentage of occupied housing units, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat. Retrieved 2026-10-09.
  19. U.S. Census Bureau. Building Permits Survey: final annual county estimates of new privately owned housing units authorized, including imputation. https://www2.census.gov/econ/bps/County/co2025a.txt. Retrieved 2026-10-10.
  20. U.S. Census Bureau. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Retrieved 2026-10-11.
  21. Source: USDA National Agricultural Statistics Service, Census of Agriculture. Census of Agriculture: number of farms, nation, states and counties (1997 to 2022). Retrieved through Data Commons (datacommons.org). https://www.nass.usda.gov/AgCensus/. Retrieved 2026-10-11. Retrieved through Data Commons (https://datacommons.org).
  22. U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: median daily AQI. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.
  23. U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.
  24. NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December average temperature, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.

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