Oneida is a city in Nemaha County, Kansas, home to about 137 people across 0.2 square miles. Its ZIP code is 66522, and parts of 66538 are in Oneida too.
Homes sold for a median of $111 per square foot in the three months ending August 2026.
Mostly Oneida
Mostly Seneca; part is in Oneida
Each card is that ZIP code’s whole market, including any part outside Oneida. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Oneida’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Kansas City International Airport (MCI)78 miles away |
|---|---|
| Closer regional airport | Manhattan Regional Airport (MHK)61 miles away |
| Nearest city of 250,000+ | Lincoln, NE75 miles away |
| Nearest city of 1 million+ | Chicago, IL455 miles away |
Straight-line distances from the center of Oneida; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Oneida had 61 residents in the 2020 census, down 13% since 2000.
It’s the 499th largest of 721 towns in Kansas by population.
Nemaha County grew from 20,376 residents in 1900 to 10,273 in 2020.
Nemaha County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 89°F in summer, and winter lows average 17°F. About 35.7 inches of rain and melted snow fall in a typical year, with about 33 inches of snow.
Source: NOAA 1991–2020 climate normals, Centralia, KS weather station (12 miles away).
4,895 jobs at 371 businesses in Nemaha County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
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Shares ZIP codes with Seneca, St. Benedict and Kelly.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.