Blencoe is a city in Monona County, Iowa, home to about 280 people across 0.8 square miles. Its ZIP code is 51523.
Homes sold for a median of $116 per square foot in the three months ending August 2026.
Mostly Blencoe
Each card is that ZIP code’s whole market, including any part outside Blencoe. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Eppley Airfield (OMA)44 miles away |
|---|---|
| Closer regional airport | Sioux Gateway Airport / Brigadier General Bud Day Field (SUX)36 miles away |
| Nearest city of 250,000+ | Omaha, NE46 miles away |
| Nearest city of 1 million+ | Chicago, IL432 miles away |
Straight-line distances from the center of Blencoe; 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.
Blencoe had 233 residents in the 2020 census, up 1% since 2000.
It’s the 623rd largest of 1,019 towns in Iowa by population.
Monona County grew from 17,980 residents in 1900 to 8,751 in 2020.
Monona 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 9°F. About 39.8 inches of rain and melted snow fall in a typical year, with about 46 inches of snow.
Source: NOAA 1991–2020 climate normals, Little Sioux 2 Nw, IA weather station (7 miles away).
1,935 jobs at 228 businesses in Monona County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2022 (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.