Lynn is a township in Lehigh County, Pennsylvania, home to about 4,278 people across 41 square miles. Its ZIP code is 18066, and parts of 18053 and 19529 are in Lynn too.
Homes sold for a median of $191 per square foot in the three months ending August 2026, a seller’s market.
Mostly Lynn; also Weisenberg and Lowhill
Mostly Heidelberg Township (Lehigh County); part is in Lynn
Mostly Albany Township (Berks County); part is in Lynn
Each card is that ZIP code’s whole market, including any part outside Lynn. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Lynn’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)61 miles away |
|---|---|
| Closer regional airport | Lehigh Valley International Airport (ABE)18 miles away |
| Nearest city of 250,000+ | Philadelphia, PA56 miles away |
Straight-line distances from the center of Lynn; 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.
Lynn had 4,232 residents in the 2020 census, up 10% since 2000.
It’s the 663rd 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 85°F in summer, and winter lows average 20°F. About 48.8 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Rodale Rsch Ctr, PA weather station (7 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).
23 doctors and other health care providers list an office in Lynn.
Nearest hospitals
Providers with an office here
| Primary care doctors | 4 |
|---|---|
| Specialist doctors | 1 |
| Dentists | 1 |
| Nurse practitioners and physician assistants | 3 |
| Mental health providers | 7 |
| Physical and occupational therapists | 4 |
| Chiropractors | 3 |
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 (5 nearby)
Museums
Counts are within about 4.5 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.
Public schools here are run by Northwestern Lehigh SD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Northwestern Lehigh El SchNew Tripoli | K–5 | 396 | Public | 3.6 mi |
| Northwestern Lehigh MSNew Tripoli | 6–8 | 440 | Public | 3.9 mi |
| Northwestern Lehigh HSNew Tripoli | 9–12 | 658 | Public | 3.7 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Blue Mountain Christian Day SchoolNew Tripoli | 2–8 | 12 | Mennonite | 1.4 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) 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 Heidelberg Township (Lehigh County), Weisenberg, Albany Township (Berks County) and Lowhill.
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.