Barnes City is a city in Mahaska County, Iowa, home to about 117 people across 0.6 square miles. Its ZIP code is 50027.
Homes sold for a median of $135 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Barnes City. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Des Moines International Airport (DSM)61 miles away |
|---|---|
| Closer regional airport | The Eastern Iowa Airport (CID)48 miles away |
| Nearest city of 250,000+ | Omaha, NE186 miles away |
| Nearest city of 1 million+ | Chicago, IL248 miles away |
Straight-line distances from the center of Barnes City; 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.
Barnes City had 156 residents in the 2020 census, down 22% since 2000.
It’s the 829th largest of 1,019 towns in Iowa by population.
Mahaska County grew from 34,273 residents in 1900 to 22,190 in 2020.
Mahaska County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 12°F. About 38.9 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Oskaloosa, IA weather station (15 miles away).
7,582 jobs at 538 businesses in Mahaska 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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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.