Mercer Township is a township in Butler County, Pennsylvania, home to about 1,201 people across 13 square miles. Its ZIP code is 16035, and parts of 16038 and 16057 are in Mercer Township too.
Homes sold for a median of $231 per square foot across 2 ZIP codes in the three months ending August 2026, and 1 of 2 were seller’s markets.
All in Mercer Township
Mostly Harrisville; part is in Mercer Township
Mostly Slippery Rock Township (Butler County); part is in Mercer Township
Each card is that ZIP code’s whole market, including any part outside Mercer Township. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Mercer Township’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)46 miles away |
|---|---|
| Nearest city of 250,000+ | Pittsburgh, PA48 miles away |
| Nearest city of 1 million+ | Philadelphia, PA267 miles away |
Straight-line distances from the center of Mercer Township; 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.
Mercer Township had 993 residents in the 2020 census, down 16% since 2000.
It’s the 1616th 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 (6 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.
Parks (1 nearby)
Grocery stores
Pharmacies
Libraries
Theaters and performance venues
Counts are within about 2.5 miles 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 Slippery Rock Township (Butler County), Slippery Rock Borough, Brady Township (Butler County), Harrisville, Worth Township (Butler County), Marion Township (Butler County), Scott Township (Lawrence County), Irwin Township, West Liberty, Cherry Township (Butler County), Plain Grove, Clinton Township (Venango County) and Barkeyville.
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.