Karns City is a borough in Butler County, Pennsylvania, home to about 194 people across 0.4 square miles. It has no ZIP code of its own: it’s part of 16041.
Homes sold for a median of $139 per square foot in the three months ending August 2026, a seller’s market.
Mostly Fairview Township (Butler County); part is in Karns City
Each card is that ZIP code’s whole market, including any part outside Karns City. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Karns City’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Pittsburgh International Airport (PIT)44 miles away |
|---|---|
| Nearest city of 250,000+ | Pittsburgh, PA41 miles away |
| Nearest city of 1 million+ | Philadelphia, PA250 miles away |
Straight-line distances from the center of Karns City; 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.
Karns City had 175 residents in the 2020 census, down 28% since 2000.
It’s the 2448th largest of 2,568 towns in Pennsylvania by population.
Butler County grew from 56,962 residents in 1900 to 193,763 in 2020.
Butler 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 17°F. About 43.3 inches of rain and melted snow fall in a typical year, with about 35 inches of snow.
Source: NOAA 1991–2020 climate normals, Butler 2 Sw, PA weather station (15 miles away).
86,610 jobs at 5,083 businesses in Butler 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.
Grocery stores
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.
Public schools here are run by Karns City Area SD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Karns City Jr/Sr HSKarns City | 7–12 | 642 | Public | 1.1 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Fairview Township (Butler County), Concord Township (Butler County), Bradys Bend and Perry Township (Armstrong County).
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.