Coplay is a borough in Lehigh County, Pennsylvania, home to about 3,466 people across 0.6 square miles. Its ZIP code is 18037.
Homes sold for a median of $193 per square foot in the three months ending August 2026, a seller’s market.
Mostly Coplay; also North Whitehall
Each card is that ZIP code’s whole market, including any part outside Coplay. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Coplay’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Philadelphia International Airport (PHL)57 miles away |
|---|---|
| Closer regional airport | Lehigh Valley International Airport (ABE)3 miles away |
| Nearest city of 250,000+ | Philadelphia, PA49 miles away |
Straight-line distances from the center of Coplay; 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.
Coplay had 3,348 residents in the 2020 census, down 1% since 2000.
It’s the 803rd largest of 2,568 towns in Pennsylvania by population.
Lehigh County grew from 93,893 residents in 1900 to 374,557 in 2020.
Lehigh County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 22°F. About 47.4 inches of rain and melted snow fall in a typical year, with about 33 inches of snow.
Source: NOAA 1991–2020 climate normals, Allentown Intl Ap, PA weather station (3 miles away).
201,146 jobs at 8,681 businesses in Lehigh County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
10 doctors and other health care providers list an office in Coplay.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Dentists | 1 |
| Nurse practitioners and physician assistants | 2 |
| Mental health providers | 4 |
| Chiropractors | 2 |
| Pharmacies | 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.
Parks (9 nearby)
Grocery stores (2 nearby)
Pharmacies (1 nearby)
Libraries (1 nearby)
Museums
Theaters and performance venues
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 Parkland SD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Ironton SchCoplay | K–5 | 417 | Public | 3.6 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 North Whitehall.
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.