Sandy Lake Borough is a borough in Mercer County, Pennsylvania, home to about 783 people across 0.8 square miles. Its ZIP code is 16145.
Homes sold for a median of $150 per square foot in the three months ending August 2026, a seller’s market.
Mostly Sandy Lake Borough; also Sandy Lake Township and Mill Creek Township (Mercer County)
Each card is that ZIP code’s whole market, including any part outside Sandy Lake Borough. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Sandy Lake Borough’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)59 miles away |
|---|---|
| Closer regional airport | Erie International Tom Ridge Field (ERI)52 miles away |
| Nearest city of 250,000+ | Pittsburgh, PA62 miles away |
| Nearest city of 1 million+ | Philadelphia, PA273 miles away |
Straight-line distances from the center of Sandy Lake Borough; 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.
Sandy Lake Borough had 649 residents in the 2020 census, down 13% since 2000.
It’s the 1929th largest of 2,568 towns in Pennsylvania by population.
Mercer County grew from 57,387 residents in 1900 to 110,652 in 2020.
Mercer County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 18°F. About 46.5 inches of rain and melted snow fall in a typical year, with about 54 inches of snow.
Source: NOAA 1991–2020 climate normals, Franklin, PA weather station (12 miles away).
40,948 jobs at 2,611 businesses in Mercer County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
12 doctors and other health care providers list an office in Sandy Lake Borough.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Dentists | 6 |
| Nurse practitioners and physician assistants | 1 |
| Mental health providers | 2 |
| Optometrists | 1 |
| Chiropractors | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Pharmacies
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.
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Harmony EchoesSandy Lake | 1–8 | 26 | Amish | 5.6 mi |
Source: U.S. Department of Education, NCES: Common Core of Data for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Sandy Lake Township, Mill Creek Township (Mercer County), New Vernon, New Lebanon and Deer Creek.
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.