Lyon County, Kansas Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 18th-largest in Kansas
The population of Lyon County, Kansas is 32,145 as of the 2023 American Community Survey, making it the 18th-largest county in Kansas. The median household income is $59,078, the median home value is $142,200, and the median age is 33.1.
The population of Lyon County has declined 3.3% since 2010 (33,647 → 32,520), a -0.24% annualized rate.
32,145
Population
-0.24%
Annual growth
38
People / sq mi
$59,078
Median Income
$142,200
Median Home Value
Lyon County covers 847 sq mi of land at 37.9 people per square mile.
About Lyon County, KS
Age is the most distinctive thing about Lyon County: a median age of 33.1, younger than the national median. With 32,145 residents, Lyon County is a county in Kansas. It ranks #18 among counties in Kansas by population.
Household earnings are middling, with a median of $59,078 — below the US median of $78,538. The poverty rate is 8.7%, below the national 12.4%. The typical home is valued at $142,200, with typical rent around $796.
College attainment is above the local norm at 27.7%, below the national 35.0%. Remote work is below the national 14.0% at 6.4%, and the average commute runs about 15 minutes each way.
Lyon County Population History (2010-2024)
The county of Lyon County had a population of 33,647 in 2010 and 32,520 in 2024, a -3.3% growth over 14 years. The peak was 33,651 in 2011. Average annual growth rate: -0.24%.
32,520
Population (2024)
33,647
Population (2010)
33,651
Peak (2011)
-0.24%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 33,647 |
| 2011 | 33,651 |
| 2012 | 33,544 |
| 2013 | 33,478 |
| 2014 | 33,148 |
| 2015 | 33,142 |
| 2016 | 33,367 |
| 2017 | 33,246 |
| 2018 | 33,302 |
| 2019 | 33,224 |
| 2020 | 32,113 |
| 2021 | 32,034 |
| 2022 | 31,994 |
| 2023 | 32,267 |
| 2024 | 32,520 |
Race & Ethnicity
| White | 75.0% |
| Black or African American | 1.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.2% |
| Two or More Races | 0.0% |
Age & Sex
33.1
Median Age
51.1%
Female
48.9%
Male
15.7%
Age 65+
Age Distribution
Children (under 15): 18.5% · Seniors (65+): 15.7%
Income & Poverty
| Median household income | $59,078$-13,561 vs state |
| Mean household income | $72,659 |
| Per-capita income | $29,881 |
| Poverty rate | 8.7%+1.0% vs state |
| Unemployment rate | 1.7% |
| Employment-to-population | 66.3% |
Top Industries by Employment
The largest employment sector in Lyon County is professional & business services, accounting for 26.0% of workers.
How residents commute
0.2%
Drive alone
4.4%
Carpool
76.6%
Public transit
6.4%
Work from home
15.2 min
Avg commute
Housing
$142,200$-61,200 vs state
Median home value
$796
Median rent
58.2%
Homeownership rate
14,998
Total housing units
88.8%
Occupied
11.2%
Vacant
41.8%
Renter-occupied
Social & access
89.0%
With health insurance
94.4%
With broadband internet
22.5%
Foreign-born
6.4%
Veterans (18+)
13.4%
With a disability
83.8%
Speak language other than English at home
Education
89.2%
High School+
27.7%
Bachelor's+
Largest cities in Kansas
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County rankings
Frequently Asked Questions
Lyon County, Kansas has a population of 32,145 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 18th-largest county in Kansas. Population density is 38 people per square mile.
The population of Lyon County has declined 3.3% since 2010 (33,647 → 32,520), a -0.24% annualized rate.
The median household income in Lyon County, Kansas is $59,078, with mean (average) household income of $72,659 and per-capita income of $29,881. 8.7% of residents live below the federal poverty level.
In Lyon County, the largest racial and ethnic groups are White (75.0%), Hispanic or Latino (3.2%), Black or African American (1.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Lyon County, Kansas is 33.1 years. Residents are 51.1% female and 48.9% male.
The median home value in Lyon County is $142,200 and median monthly rent is $796. 58.2% of occupied housing units are owner-occupied. The county has 14,998 total housing units, 11.2% of which are vacant.
The largest employment sector in Lyon County, Kansas is professional, scientific, and management services, employing 26.0% of workers. The unemployment rate is 1.7%.
Wichita is among the largest cities associated with Lyon County, Kansas, with a population of 396,488.
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Population, race, income, age, and trends across Kansas
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.