County · Kansas
Allen County, Kansas
Allen County, Kansas. Allen County had 12,302 residents in 2025 by the Census Bureau's estimate, down 1.7% since 2020, while Kansas grew 1.3%. It holds 19 places (8 cities, villages and boroughs, 10 towns and townships and 1 census-designated) and 5 census tracts. GEOID 20001.
Residents, July 2025 estimate
12,302
Census Bureau estimate (no margin published)
2020 Census count: 12,526 · ACS 2020-2024: 12,483
Median household income
$60,689
±$4,364 (90% margin)
Kansas: $74,275
Median home value
$107,600
±$9,605 (90% margin)
Kansas: $217,200
Median gross rent
$720
±$62 (90% margin)
Kansas: $1,060
How many people live in Allen County, and is it growing?
The 2020 Census counted 12,526 residents in Allen County. The Census Bureau estimates 12,302 for July 1, 2025, down 1.7% since 2020, while Kansas grew 1.3%. The 2020-2024 American Community Survey puts the population at 12,483 over 500 square miles of land.
| Measure | Allen County | Kansas | Change since 2015-2019 |
|---|---|---|---|
| Total population | 12,483 | 2,947,197 | −73 |
| Households | 5,011±201 | 1,174,060 | −361 |
| Average household size | 2.40±0.10 | 2.44 | +0.14 |
| Housing units | 6,077±42 | 1,293,635 | −241 |
Allen County's population since 2000
From 14,385 in 2000 to 12,302 in 2025: down 14.5%. 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 Allen County?
Allen County holds 19 places: 8 cities, villages and boroughs (incorporated places), 10 towns and townships (county subdivisions with their own government) and 1 census-designated place. The largest is Iola with 5,240 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Iola | 5,396 | $54,221 |
|---|---|---|
| Humboldt | 1,847 | $47,560 |
| Iola TownshipGEOID 2000134325 | 756 | $97,063 |
| Marmaton Township, Allen County | 752 | $72,833 |
| La Harpe | 480 | $46,563 |
| Gas | 475 | $55,227 |
| Moran | 466 | $57,083 |
| Elsmore Township | 363 | $86,042 |
| Osage Township, Allen CountyGEOID 2000153075 | 254 | $81,563 |
| Salem Township, Allen CountyGEOID 2000162600 | 244 | $76,328 |
| Humboldt TownshipGEOID 2000133475 | 241 | $113,977 |
| Cottage Grove TownshipGEOID 2000115825 | 232 | $170,521 |
| Logan Township, Allen CountyGEOID 2000141725 | 216 | not published |
| Geneva TownshipGEOID 2000126100 | 147 | not published |
| Deer Creek Township, Allen CountyGEOID 2000117175 | 117 | $63,750 |
| SavonburgGEOID 2063200 | 74 | $48,750 |
| ElsmoreGEOID 2020875 | 50 | $36,607 |
| MildredGEOID 2046500 | 25 | not published |
| BassettGEOID 2004450 | 20 | not published |
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 Allen County?
The median resident of Allen County is 41.2 years old; 22.5% are under 18 and 21.0% are 65 or older. The largest group is non-Hispanic white residents at 88.5%, then Hispanic or Latino residents (of any race) at 4.3%. 3.2% of residents were born outside the United States.
| Measure | Allen County | Kansas | Change since 2015-2019 |
|---|---|---|---|
| Median age | 41.2±0.6 | 37.4 | no clear change |
| Under 18 years | 22.5%±0.1 pts | 23.8% | – |
| 65 years and over | 21.0%±0.5 pts | 17.0% | – |
| Hispanic or Latino (any race) | 4.3% | 13.6% | +0.7 pts |
| White alone, not Hispanic | 88.5%±0.3 pts | 72.7% | −1.6 pts |
| Black or African American alone, not Hispanic | 2.8%±1.2 pts | 5.2% | +1.8 pts |
| Asian alone, not Hispanic | 0.4%±0.4 pts | 2.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.5%±0.4 pts | 0.4% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.4%±0.6 pts | 0.1% | – |
| Two or more races, not Hispanic | 3.0%±1.1 pts | 4.8% | – |
| Some other race alone, not Hispanic | 0.1%±0.1 pts | 0.4% | – |
| Born outside the United States | 3.2%±1.4 pts | 7.4% | +1.9 pts |
| Speak a language other than English at home (age 5+) | 2.5%±1.3 pts | 12.1% | – |
| Civilian veterans (age 18+) | 8.0%±1.4 pts | 6.8% | – |
| With a disability | 17.3%±1.8 pts | 13.5% | – |
| No health insurance coverage | 9.5%±1.7 pts | 8.8% | +4.4 pts |
| High school graduate or higher (age 25+) | 94.1%±1.4 pts | 92.0% | – |
| Bachelor's degree or higher (age 25+) | 22.4%±2.9 pts | 35.6% | no clear change |
| Graduate or professional degree (age 25+) | 7.9%±1.9 pts | 13.4% | – |
| Moved from another state in the past year | 0.8%±0.5 pts | 3.0% | – |
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 Allen County earn?
Half of Allen County's 5,011 households earn less than $60,689 a year (±$4,364), against $74,275 in Kansas. In 2015-2019 it was $55,791 in 2024 dollars; the margins of error cannot tell the two periods apart. 9.9% of residents live below the poverty line.
| Measure | Allen County | Kansas | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $60,689±$4,364 | $74,275 | no clear change |
| Mean household income | $76,243±$5,438 | $100,417 | – |
| Per capita income | $31,357±$2,169 | $40,978 | no clear change |
| People below the poverty line | 9.9%±2.3 pts | 11.3% | −7.8 pts |
| Children under 18 below the poverty line | 12.9%±5.9 pts | 13.1% | −12.0 pts |
| Households receiving SNAP | 9.3%±2.6 pts | 6.8% | – |
| Households with a broadband subscription | 84.4%±2.9 pts | 90.7% | – |
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 Allen County?
Owners occupy 75.4% of Allen County's occupied homes and renters 24.6%. The median owner-occupied home is valued at $107,600 by its owner (±$9,605). The median renter pays $720 a month including utilities, and 25.0% of renters pay 35% or more of their income on rent.
| Measure | Allen County | Kansas | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $107,600±$9,605 | $217,200 | no clear change |
| Median gross rent | $720±$62 | $1,060 | −$111 |
| Renters paying 35% or more of income on rent | 25.0%±10.4 pts | 34.5% | no clear change |
| Median monthly owner costs, with a mortgage | $1,188±$85 | $1,689 | – |
| Owner-occupied homes | 75.4%±3.6 pts | 67.2% | no clear change |
| Housing units | 6,077±42 | 1,293,635 | −241 |
| Homeowner vacancy rate | 2.6%±1.8 pts | 0.9% | – |
| Rental vacancy rate | 1.7%±2.0 pts | 6.2% | – |
| Single-family detached homes | 82.9%±3.2 pts | 71.8% | – |
| Mobile homes | 9.8%±2.6 pts | 4.0% | – |
| Built 2020 or later | 0.2%±0.2 pts | 1.4% | – |
| Built 1939 or earlier | 32.7%±3.5 pts | 15.4% | – |
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 Allen County building?
Builders took permits for 25 new housing units across Allen County in 2025 (23 single-family), 2.0 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 Allen County get to work?
77.9% of Allen County's workers drive alone and 6.9% work from home. The average trip to work takes 18.4 minutes. The unemployment rate in 2020-2024 averaged 7.9%.
| Measure | Allen County | Kansas | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 62.7%±2.9 pts | 66.1% | – |
| Unemployment rate | 7.9%±2.7 pts | 3.9% | +3.3 pts |
| Drove alone to work | 77.9%±3.6 pts | 75.4% | – |
| Carpooled | 9.9%±3.0 pts | 8.7% | – |
| Public transportation | 0.1%±0.1 pts | 0.4% | – |
| Walked | 4.2%±1.9 pts | 2.3% | – |
| Worked from home | 6.9%±2.0 pts | 11.8% | +4.7 pts |
| Mean travel time to work | 18.4 min±2.2 | 19.7 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 Allen County's census tracts?
Allen County is divided into 5 census tracts. Among those with a reliable estimate, median household income runs from $54,301 (Tract 9528) to $72,868 (Tract 9526).
| Tract 952620001952600 | 1,947±193 | $72,868 |
|---|---|---|
| Tract 952720001952700 | 1,807±226 | $68,636 |
| Tract 952820001952800 | 4,093±288 | $54,301 |
| Tract 952920001952900 | 1,929±296 | $56,696 |
| Tract 953020001953000 | 2,707±244 | $65,221 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Allen County compare with Kansas's other counties?
| Measure | Rank |
|---|---|
| Population | 36th of 105 |
| Growth 2020-2025 | 56th of 105 |
| Residents per square mile | 31st of 105 |
| Median household income | 71st of 105 |
| Median home value | 70th of 105 |
| Median gross rent | 70th of 104 |
| Poverty rate | 64th of 102 |
| Bachelor's degree or higher | 70th of 105 |
| Median age | 53rd of 105 |
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 Allen 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.