Oneida County, Wisconsin Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 39th-largest in Wisconsin
The population of Oneida County, Wisconsin is 38,007 as of the 2023 American Community Survey, making it the 39th-largest county in Wisconsin. The median household income is $69,621, the median home value is $227,500, and the median age is 52.2.
The population of Oneida County has grown 6.2% since 2010 (35,949 → 38,175), a +0.43% annualized rate.
38,007
Population
+0.43%
Annual growth
34
People / sq mi
$69,621
Median Income
$227,500
Median Home Value
Oneida County covers 1,114 sq mi of land at 34.1 people per square mile.
About Oneida County, WI
Oneida County skews on age — the median resident is 52.2, older than the national median. Oneida County is a county in Wisconsin with a population of 38,007. It ranks #39 among counties in Wisconsin by population.
The typical household here earns about $69,621, below the US median of $78,538. Poverty is among the lowest of comparable US counties, at 4.4% — below the national 12.4%. The median home value is $227,500, with typical rent around $868.
College attainment is above the local norm at 28.4%, below the national 35.0%. Remote work is below the national 14.0% at 8.5%, and the average commute runs about 21 minutes each way.
The age structure shapes everything downstream in Oneida County — from housing demand to the mix of working-age earners reflected in the income figures above.
Oneida County Population History (2010-2024)
The county of Oneida County had a population of 35,949 in 2010 and 38,175 in 2024, a 6.2% growth over 14 years. The peak was 38,329 in 2021. Average annual growth rate: 0.44%.
38,175
Population (2024)
35,949
Population (2010)
38,329
Peak (2021)
0.44%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 35,949 |
| 2011 | 35,795 |
| 2012 | 35,679 |
| 2013 | 35,562 |
| 2014 | 35,330 |
| 2015 | 35,307 |
| 2016 | 35,358 |
| 2017 | 35,237 |
| 2018 | 35,449 |
| 2019 | 35,607 |
| 2020 | 37,877 |
| 2021 | 38,329 |
| 2022 | 38,267 |
| 2023 | 38,189 |
| 2024 | 38,175 |
Race & Ethnicity
| White | 94.0% |
| Black or African American | 0.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.9% |
| Two or More Races | 0.0% |
Age & Sex
52.2
Median Age
49.2%
Female
50.8%
Male
27.5%
Age 65+
Age Distribution
Children (under 15): 13.8% · Seniors (65+): 27.5%
Income & Poverty
| Median household income | $69,621$-6,049 vs state |
| Mean household income | $89,854 |
| Per-capita income | $41,160 |
| Poverty rate | 4.4%-2.2% vs state |
| Unemployment rate | 1.2% |
| Employment-to-population | 53.5% |
Top Industries by Employment
The largest employment sector in Oneida County is professional & business services, accounting for 22.0% of workers.
How residents commute
0.1%
Drive alone
2.4%
Carpool
78.3%
Public transit
8.5%
Work from home
21.1 min
Avg commute
Housing
$227,500$-19,900 vs state
Median home value
$868
Median rent
84.0%
Homeownership rate
30,746
Total housing units
54.6%
Occupied
45.4%
Vacant
16.0%
Renter-occupied
Social & access
95.2%
With health insurance
93.1%
With broadband internet
23.9%
Foreign-born
9.0%
Veterans (18+)
14.7%
With a disability
98.2%
Speak language other than English at home
Education
95.7%
High School+
28.4%
Bachelor's+
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Frequently Asked Questions
Oneida County, Wisconsin has a population of 38,007 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 39th-largest county in Wisconsin. Population density is 34 people per square mile.
The population of Oneida County has grown 6.2% since 2010 (35,949 → 38,175), a +0.43% annualized rate.
The median household income in Oneida County, Wisconsin is $69,621, with mean (average) household income of $89,854 and per-capita income of $41,160. 4.4% of residents live below the federal poverty level.
In Oneida County, the largest racial and ethnic groups are White (94.0%), Hispanic or Latino (1.9%), 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 Oneida County, Wisconsin is 52.2 years. Residents are 49.2% female and 50.8% male.
The median home value in Oneida County is $227,500 and median monthly rent is $868. 84.0% of occupied housing units are owner-occupied. The county has 30,746 total housing units, 45.4% of which are vacant.
The largest employment sector in Oneida County, Wisconsin is professional, scientific, and management services, employing 22.0% of workers. The unemployment rate is 1.2%.
Milwaukee is among the largest cities associated with Oneida County, Wisconsin, with a population of 569,756.
Oneida County, WI Climate
Oneida County, WI has an average annual temperature of 4.4°C (40°F) and receives about 784 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
4.4°C
Avg Temp
784
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -12° / 10° | 28 mm |
| February | -10° / 15° | 22 mm |
| March | -3° / 26° | 41 mm |
| April | 4° / 40° | 59 mm |
| May | 12° / 53° | 82 mm |
| June | 17° / 62° | 95 mm |
| July | 19° / 66° | 91 mm |
| August | 18° / 64° | 108 mm |
| September | 13° / 55° | 106 mm |
| October | 7° / 44° | 66 mm |
| November | -1° / 29° | 51 mm |
| December | -9° / 16° | 35 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 Oneida County, WI
The most comfortable months to visit Oneida County, WI are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 25°C high). The coldest is January (near -18°C low). August is usually the wettest month.
Where to stay near Oneida County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.