Osage County, Kansas Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 32nd-largest in Kansas
The population of Osage County, Kansas is 15,780 as of the 2023 American Community Survey, making it the 32nd-largest county in Kansas. The median household income is $70,216, the median home value is $142,800, and the median age is 42.8.
The population of Osage County has declined 3.3% since 2010 (16,274 → 15,737), a -0.24% annualized rate.
15,780
Population
-0.24%
Annual growth
22
People / sq mi
$70,216
Median Income
$142,800
Median Home Value
Osage County covers 706 sq mi of land at 22.4 people per square mile.
About Osage County, KS
Homeownership is the standout figure in Osage County: 80.1% of homes are owner-occupied, higher than the national rate. With 15,780 residents, Osage County is a county in Kansas. It ranks #32 among counties in Kansas by population.
Median household income is $70,216, below the US median of $78,538. Poverty runs at 7.3%, below the national 12.4%. Median home value is $142,800, with typical rent around $810.
Degree attainment is mid-range for US counties: 21.0% of adults hold a four-year degree, below the national 35.0%. Remote work is below the national 14.0% at 7.9%, and the average commute runs about 29 minutes each way.
The ownership rate anchors the housing story in Osage County, and tends to move with the age structure and home-value figures above.
Osage County Population History (2010-2024)
The county of Osage County had a population of 16,274 in 2010 and 15,737 in 2024, a -3.3% growth over 14 years. The peak was 16,342 in 2011. Average annual growth rate: -0.24%.
15,737
Population (2024)
16,274
Population (2010)
16,342
Peak (2011)
-0.24%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 16,274 |
| 2011 | 16,342 |
| 2012 | 16,179 |
| 2013 | 16,084 |
| 2014 | 15,973 |
| 2015 | 15,867 |
| 2016 | 15,836 |
| 2017 | 15,842 |
| 2018 | 15,921 |
| 2019 | 15,906 |
| 2020 | 15,740 |
| 2021 | 15,754 |
| 2022 | 15,690 |
| 2023 | 15,798 |
| 2024 | 15,737 |
Race & Ethnicity
| White | 93.7% |
| Black or African American | 0.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.8% |
| Two or More Races | 0.0% |
Age & Sex
42.8
Median Age
49.2%
Female
50.8%
Male
20.6%
Age 65+
Age Distribution
Children (under 15): 18.8% · Seniors (65+): 20.6%
Income & Poverty
| Median household income | $70,216$-2,423 vs state |
| Mean household income | $81,759 |
| Per-capita income | $33,617 |
| Poverty rate | 7.3%-0.4% vs state |
| Unemployment rate | 1.6% |
| Employment-to-population | 60.0% |
Top Industries by Employment
The largest employment sector in Osage County is professional & business services, accounting for 24.0% of workers.
How residents commute
0.2%
Drive alone
2.0%
Carpool
76.4%
Public transit
7.9%
Work from home
29.0 min
Avg commute
Housing
$142,800$-60,600 vs state
Median home value
$810
Median rent
80.1%
Homeownership rate
7,293
Total housing units
87.2%
Occupied
12.8%
Vacant
19.9%
Renter-occupied
Social & access
91.7%
With health insurance
91.5%
With broadband internet
21.7%
Foreign-born
8.4%
Veterans (18+)
16.4%
With a disability
97.9%
Speak language other than English at home
Education
92.4%
High School+
21.0%
Bachelor's+
Largest cities in Kansas
Other counties in Kansas
Part of Kansas
Metro areas in Kansas
County rankings
Frequently Asked Questions
Osage County, Kansas has a population of 15,780 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 32nd-largest county in Kansas. Population density is 22 people per square mile.
The population of Osage County has declined 3.3% since 2010 (16,274 → 15,737), a -0.24% annualized rate.
The median household income in Osage County, Kansas is $70,216, with mean (average) household income of $81,759 and per-capita income of $33,617. 7.3% of residents live below the federal poverty level.
In Osage County, the largest racial and ethnic groups are White (93.7%), Hispanic or Latino (1.8%), Black or African American (0.5%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Osage County, Kansas is 42.8 years. Residents are 49.2% female and 50.8% male.
The median home value in Osage County is $142,800 and median monthly rent is $810. 80.1% of occupied housing units are owner-occupied. The county has 7,293 total housing units, 12.8% of which are vacant.
The largest employment sector in Osage County, Kansas is professional, scientific, and management services, employing 24.0% of workers. The unemployment rate is 1.6%.
Wichita is among the largest cities associated with Osage County, Kansas, with a population of 396,488.
Osage County, KS Climate
Osage County, KS has an average annual temperature of 12.7°C (55°F) and receives about 930 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
12.7°C
Avg Temp
930
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -2° / 28° | 23 mm |
| February | 1° / 34° | 24 mm |
| March | 7° / 44° | 70 mm |
| April | 13° / 55° | 85 mm |
| May | 18° / 64° | 127 mm |
| June | 23° / 74° | 139 mm |
| July | 26° / 79° | 88 mm |
| August | 25° / 78° | 98 mm |
| September | 21° / 69° | 108 mm |
| October | 14° / 58° | 80 mm |
| November | 7° / 44° | 54 mm |
| December | 0° / 33° | 34 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 Osage County, KS
The most comfortable months to visit Osage County, KS are typically September, June and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°C high). The coldest is January (near -8°C low). June is usually the wettest month.
Where to stay near Osage County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.