Data / Clay County / Profile

Clay County in figures

A profile of Clay 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 Clay County was 265,032 in 2025, up 0.9% from 2024, and the 6th highest of 115 counties in Missouri.

Population265,0322025Up 0.9% from 2024The 6th highest of 115 counties in Missouri
Median age37.9 years2024Up 0.3 years from 2023The 17th lowest of 115 counties in Missouri
Population aged 65 and over16.8%2025Up 0.4 percentage points from 2024The 7th lowest of 115 counties in Missouri
Foreign-born population share5.5%2024Up less than 0.1 percentage points from 2023
Population density257.3 inhabitants per km²2025Up 0.9% from 2024
Net domestic migration, July to June1,2112025, estimatedCompared with 1,272 in 2024
252.5K255K257.5K260K262.5K265K267.5K2020202120222023202420252020: 254,121 persons2021: 255,910 persons2022: 257,034 persons2023: 259,937 persons2024: 262,674 persons2025: 265,032 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 Clay County was 3.3% (provisional) in August 2026, down 0.4 percentage points from August 2025, and tied for the 12th lowest of 115 counties in Missouri.

Unemployment rate3.3%August 2026, provisionalDown 0.4 percentage points from August 2025Tied for the 12th lowest of 115 counties in Missouri
Median household income$88,4682024Up 2.7% from 2023The 4th highest of 115 counties in Missouri
Per capita personal income$62,1302024Up 4% from 2023The 8th highest of 115 counties in Missouri
Poverty rate (US official measure)8.9%2024Up 1.1 percentage points from 2023
Gini index41.82024Up 0.8 points from 2023
123452021-072022-042023-012023-102024-072025-042026-082021-07: 5 %2021-08: 4 %2021-09: 4.8 %2021-10: 3.1 %2021-11: 3.4 %2021-12: 2.9 %2022-01: 3.2 %2022-02: 4.4 %2022-03: 2.8 %2022-04: 2 %2022-05: 2.2 %2022-06: 2.4 %2022-07: 3.1 %2022-08: 2.7 %2022-09: 1.9 %2022-10: 2.7 %2022-11: 2.2 %2022-12: 2.2 %2023-01: 2.7 %2023-02: 2.8 %2023-03: 2.8 %2023-04: 2.3 %2023-05: 2.8 %2023-06: 3 %2023-07: 3 %2023-08: 3.6 %2023-09: 2.5 %2023-10: 2.9 %2023-11: 2.6 %2023-12: 2.6 %2024-01: 3.3 %2024-02: 3.4 %2024-03: 3.6 %2024-04: 2.9 %2024-05: 3.3 %2024-06: 3.6 %2024-07: 3.9 %2024-08: 3.4 %2024-09: 2.7 %2024-10: 3 %2024-11: 3 %2024-12: 3 %2025-01: 4.4 %2025-02: 3.9 %2025-03: 3.8 %2025-04: 3.4 %2025-05: 3.5 %2025-06: 3.7 %2025-07: 4.2 %2025-08: 3.7 %2025-09: 3 %2025-11: 4 %2025-12: 3.6 %2026-01: 3.6 %2026-02: 3.6 %2026-03: 3.6 %2026-04: 3 %2026-05: 3 %2026-06: 3.2 %2026-07: 3.3 %2026-08: 3.3 %
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 Clay County was $17.31 billion in 2024, up 3% from 2023, and the 6th highest of 115 counties in Missouri.

Gross domestic product (GDP), US dollars$17.31 billion2024Up 3% from 2023The 6th highest of 115 counties in Missouri
GDP per capita, US dollars$65,7242024Up 1.7% from 2023The 16th highest of 115 counties in Missouri
Real GDP growth0.6%2024Down 1.8 percentage points from 2023Tied for the 50th lowest of 115 counties in Missouri
6,0008,00010K12K14K16K18K20012005200920132017202120242001: 7,683 USD million2002: 8,259.4 USD million2003: 8,606.3 USD million2004: 8,695.9 USD million2005: 8,790.6 USD million2006: 8,599.7 USD million2007: 9,320.2 USD million2008: 9,721.8 USD million2009: 9,545.3 USD million2010: 9,607.8 USD million2011: 9,094.1 USD million2012: 9,112.7 USD million2013: 9,858.2 USD million2014: 10,789 USD million2015: 11,843 USD million2016: 11,294.6 USD million2017: 12,224 USD million2018: 12,429.6 USD million2019: 13,066.8 USD million2020: 13,327.4 USD million2021: 14,054.9 USD million2022: 15,552 USD million2023: 16,810.2 USD million2024: 17,309.7 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 Clay County was $275,600 in 2024, up 7.5% from 2023, and the 6th highest of 115 counties in Missouri.

Median home value$275,6002024Up 7.5% from 2023The 6th highest of 115 counties in Missouri
County house price annual change, sales and refinances1.81%2025Down 4.66 percentage points from 2024The 20th lowest of 97 counties in Missouri
Median gross rent (monthly)$1,2432024Up 1.9% from 2023The 3rd highest of 115 counties in Missouri
Homeownership rate (US, housing units)69.5%2024Up 0.6 percentage points from 2023
Housing units authorized by building permits2972025, estimatedDown 16.6% from 2024
180K200K220K240K260K280K20212022202320242021: 199,600 USD2022: 237,200 USD2023: 256,400 USD2024: 275,600 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 Clay County were 4,468 in 2023, up 1.9% from 2022, and the 6th highest of 115 counties in Missouri.

Employer firms4,4682023Up 1.9% from 2022The 6th highest of 115 counties in Missouri
Farms5232022No 2021 figure to compareThe 25th lowest of 114 counties in Missouri
3,6003,8004,0004,2004,4004,60019992003200720112015201920231999: 3,698 count2000: 3,761 count2001: 3,787 count2002: 3,797 count2003: 3,868 count2004: 3,941 count2005: 4,018 count2006: 4,028 count2007: 4,048 count2008: 4,012 count2009: 3,989 count2010: 3,869 count2011: 3,857 count2012: 3,861 count2013: 3,868 count2014: 3,935 count2015: 4,006 count2016: 4,094 count2017: 4,102 count2018: 4,086 count2019: 4,139 count2020: 4,178 count2021: 4,274 count2022: 4,383 count2023: 4,468 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 Clay County was 42 in 2025, up 1 point from 2024, and tied for the 6th highest of 21 counties in Missouri.

Median Air Quality Index (US EPA)422025Up 1 point from 2024Tied for the 6th highest of 21 counties in Missouri
Share of days with good air quality (US EPA AQI)74.4%2025Down 3.7 percentage points from 2024The 7th lowest of 21 counties in Missouri
Average annual temperature55.5 °F2025Down 1.8 °F from 2024Tied for the 36th lowest of 115 counties in Missouri
35404550556020012005200920132017202120252001: 59 index2002: 58 index2003: 46 index2004: 40 index2005: 45 index2006: 54 index2007: 55 index2008: 52 index2009: 51 index2010: 52 index2011: 52 index2012: 52 index2013: 49 index2014: 46 index2015: 46 index2016: 41 index2017: 43 index2018: 42 index2019: 43 index2020: 39 index2021: 41 index2022: 41 index2023: 43 index2024: 41 index2025: 42 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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