La Harpe is a city in Allen County, Kansas, home to about 492 people across 0.8 square miles. Its ZIP code is 66751.
Homes sold for a median of $104 per square foot in the three months ending August 2026.
Mostly La Harpe
Each card is that ZIP code’s whole market, including any part outside La Harpe. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Kansas City International Airport (MCI)101 miles away |
|---|---|
| Closer regional airport | Joplin Regional Airport (JLN)69 miles away |
| Nearest city of 250,000+ | Kansas City, MO93 miles away |
| Nearest city of 1 million+ | Dallas, TX363 miles away |
Straight-line distances from the center of La Harpe; 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.
La Harpe had 480 residents in the 2020 census, down 32% since 2000.
It’s the 299th largest of 721 towns in Kansas by population.
Allen County grew from 19,507 residents in 1900 to 12,526 in 2020.
Allen 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 20°F. About 42 inches of rain and melted snow fall in a typical year, with about 7 inches of snow.
Source: NOAA 1991–2020 climate normals, Iola 1 W, KS weather station (7 miles away).
3,981 jobs at 353 businesses in Allen 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)
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.