St. Lucas is a city in Fayette County, Iowa, home to about 154 people across 0.3 square miles. Its ZIP code is 52166, and parts of 52171 are in St. Lucas too.
Homes sold for a median of $71 per square foot in the three months ending August 2026, a seller’s market.
Mostly St. Lucas
Part is in St. Lucas, part in Waucoma and Jackson Junction
Each card is that ZIP code’s whole market, including any part outside St. Lucas. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up St. Lucas’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Des Moines International Airport (DSM)136 miles away |
|---|---|
| Closer regional airport | Waterloo Regional Airport (ALO)41 miles away |
| Nearest city of 250,000+ | Madison, WI128 miles away |
| Nearest city of 1 million+ | Chicago, IL234 miles away |
Straight-line distances from the center of St. Lucas; 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.
St. Lucas had 167 residents in the 2020 census, down 6% since 2000.
It’s the 756th largest of 1,019 towns in Iowa by population.
Fayette County grew from 29,845 residents in 1900 to 19,509 in 2020.
Fayette County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 82°F in summer, and winter lows average 6°F. About 39.6 inches of rain and melted snow fall in a typical year, with about 41 inches of snow.
Source: NOAA 1991–2020 climate normals, Fayette, IA weather station (14 miles away).
5,706 jobs at 524 businesses in Fayette 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.
Libraries
Museums
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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Shares ZIP codes with Waucoma, Jackson Junction and Protivin.
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.