Seward County, Kansas Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 26th-largest in Kansas
The population of Seward County, Kansas is 21,640 as of the 2023 American Community Survey, making it the 26th-largest county in Kansas. The median household income is $62,269, the median home value is $134,000, and the median age is 31.0.
The population of Seward County has declined 7.4% since 2010 (22,972 → 21,276), a -0.55% annualized rate.
21,640
Population
-0.55%
Annual growth
34
People / sq mi
$62,269
Median Income
$134,000
Median Home Value
Seward County covers 640 sq mi of land at 33.8 people per square mile.
About Seward County, KS
Age is the most distinctive thing about Seward County: a median age of 31.0, younger than the national median. With 21,640 residents, Seward County is a county in Kansas. It ranks #26 among counties in Kansas by population.
Median household income is $62,269, below the US median of $78,538. Poverty runs at 10.8%, below the national 12.4%. Homes are comparatively cheap — a median value of $134,000, with typical rent around $924.
Four-year-degree attainment is near the bottom of the range for US counties, 12.7%, below the national 35.0%. Remote work is rare here (3.0%, below the national 14.0%), and the average commute runs about 17 minutes each way.
Seward County Population History (2010-2024)
The county of Seward County had a population of 22,972 in 2010 and 21,276 in 2024, a -7.4% growth over 14 years. The peak was 23,358 in 2012. Average annual growth rate: -0.54%.
21,276
Population (2024)
22,972
Population (2010)
23,358
Peak (2012)
-0.54%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 22,972 |
| 2011 | 23,131 |
| 2012 | 23,358 |
| 2013 | 23,318 |
| 2014 | 23,308 |
| 2015 | 23,283 |
| 2016 | 22,907 |
| 2017 | 22,239 |
| 2018 | 21,904 |
| 2019 | 21,421 |
| 2020 | 21,857 |
| 2021 | 21,764 |
| 2022 | 21,326 |
| 2023 | 21,209 |
| 2024 | 21,276 |
Race & Ethnicity
| White | 40.5% |
| Black or African American | 2.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.4% |
| Two or More Races | 0.0% |
Age & Sex
31.0
Median Age
47.5%
Female
52.5%
Male
10.4%
Age 65+
Age Distribution
Children (under 15): 25.6% · Seniors (65+): 10.4%
Income & Poverty
| Median household income | $62,269$-10,370 vs state |
| Mean household income | $78,653 |
| Per-capita income | $29,053 |
| Poverty rate | 10.8%+3.1% vs state |
| Unemployment rate | 3.0% |
| Employment-to-population | 66.9% |
Top Industries by Employment
The largest employment sector in Seward County is manufacturing, accounting for 27.4% of workers.
How residents commute
0.0%
Drive alone
1.9%
Carpool
77.3%
Public transit
3.0%
Work from home
16.5 min
Avg commute
Housing
$134,000$-69,400 vs state
Median home value
$924
Median rent
61.2%
Homeownership rate
8,299
Total housing units
86.9%
Occupied
13.1%
Vacant
38.8%
Renter-occupied
Social & access
86.1%
With health insurance
93.1%
With broadband internet
21.0%
Foreign-born
2.2%
Veterans (18+)
10.7%
With a disability
40.7%
Speak language other than English at home
Education
71.9%
High School+
12.7%
Bachelor's+
Largest cities in Kansas
Other counties in Kansas
Part of Kansas
Metro areas in Kansas
County rankings
Frequently Asked Questions
Seward County, Kansas has a population of 21,640 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 26th-largest county in Kansas. Population density is 34 people per square mile.
The population of Seward County has declined 7.4% since 2010 (22,972 → 21,276), a -0.55% annualized rate.
The median household income in Seward County, Kansas is $62,269, with mean (average) household income of $78,653 and per-capita income of $29,053. 10.8% of residents live below the federal poverty level.
In Seward County, the largest racial and ethnic groups are White (40.5%), Black or African American (2.7%), Hispanic or Latino (2.4%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Seward County, Kansas is 31.0 years. Residents are 47.5% female and 52.5% male.
The median home value in Seward County is $134,000 and median monthly rent is $924. 61.2% of occupied housing units are owner-occupied. The county has 8,299 total housing units, 13.1% of which are vacant.
The largest employment sector in Seward County, Kansas is manufacturing, employing 27.4% of workers. The unemployment rate is 3.0%.
Wichita is among the largest cities associated with Seward County, Kansas, with a population of 396,488.
Seward County, KS Climate
Seward County, KS has an average annual temperature of 13.3°C (56°F) and receives about 496 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
13.3°C
Avg Temp
496
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 0° / 32° | 11 mm |
| February | 3° / 38° | 13 mm |
| March | 8° / 46° | 36 mm |
| April | 13° / 55° | 41 mm |
| May | 18° / 65° | 78 mm |
| June | 24° / 74° | 76 mm |
| July | 26° / 80° | 67 mm |
| August | 26° / 78° | 60 mm |
| September | 21° / 69° | 47 mm |
| October | 14° / 58° | 31 mm |
| November | 6° / 43° | 23 mm |
| December | 1° / 34° | 13 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Seward County, KS
The most comfortable months to visit Seward County, KS are typically September, June and May, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 34°C high). The coldest is January (near -8°C low). May is usually the wettest month.
Where to stay near Seward County
Visiting or relocating to Seward County, KS? Compare hotels and short-term rentals across the county — live availability and prices.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.