Archer is a city in O'Brien County, Iowa, home to about 130 people across 0.1 square miles. It has no ZIP code of its own: it’s part of 51231.
Homes sold for a median of $153 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 Archer. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Eppley Airfield (OMA)126 miles away |
|---|---|
| Closer regional airport | Sioux Gateway Airport / Brigadier General Bud Day Field (SUX)59 miles away |
| Nearest city of 250,000+ | Omaha, NE129 miles away |
| Nearest city of 1 million+ | Chicago, IL420 miles away |
Straight-line distances from the center of Archer; 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.
Archer had 117 residents in the 2020 census, down 7% since 2000.
It’s the 804th largest of 1,019 towns in Iowa by population.
O'Brien County grew from 16,985 residents in 1900 to 14,182 in 2020.
O'Brien County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 6°F. About 32.2 inches of rain and melted snow fall in a typical year, with about 41 inches of snow.
Source: NOAA 1991–2020 climate normals, Sanborn, IA weather station (6 miles away).
5,332 jobs at 488 businesses in O'Brien 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.
Parks (1 nearby)
Libraries (1 nearby)
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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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.