Princeton is a city in Franklin County, Kansas, home to about 236 people across 0.4 square miles. Its ZIP code is 66078.
Homes sold for a median of $947 per square foot in the three months ending August 2026.
Mostly Princeton
Each card is that ZIP code’s whole market, including any part outside Princeton. 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)64 miles away |
|---|---|
| Nearest city of 250,000+ | Kansas City, MO59 miles away |
| Nearest city of 1 million+ | Dallas, TX402 miles away |
Straight-line distances from the center of Princeton; 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.
Princeton had 248 residents in the 2020 census, down 22% since 2000.
It’s the 400th largest of 721 towns in Kansas by population.
Franklin County grew from 21,354 residents in 1900 to 25,996 in 2020.
Franklin 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 18°F. About 40 inches of rain and melted snow fall in a typical year, with about 9 inches of snow.
Source: NOAA 1991–2020 climate normals, Ottawa, KS weather station (9 miles away).
9,033 jobs at 533 businesses in Franklin 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.