Eau Claire is a borough in Butler County, Pennsylvania, home to about 272 people across 1.3 square miles. Its ZIP code is 16030.
All in Eau Claire
We’re writing up Eau Claire’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)50 miles away |
|---|---|
| Nearest city of 250,000+ | Pittsburgh, PA49 miles away |
| Nearest city of 1 million+ | Philadelphia, PA257 miles away |
Straight-line distances from the center of Eau Claire; 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.
Eau Claire had 307 residents in the 2020 census, down 14% since 2000.
It’s the 2382nd 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 81°F in summer, and winter lows average 17°F. About 45.3 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Slippery Rock 1 Ssw, 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.
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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.