Upper Saucon is a township in Lehigh County, Pennsylvania, home to about 17,484 people across 24 square miles. Its ZIP codes are 18034 and 18036, and parts of 18015 are in Upper Saucon too.
Homes sold for a median of $232 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
All in Upper Saucon
Mostly Upper Saucon; also Coopersburg and Springfield Township (Bucks County)
Mostly Bethlehem City (Northampton County); part is in Upper Saucon
Each card is that ZIP code’s whole market, including any part outside Upper Saucon. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Upper Saucon’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)47 miles away |
|---|---|
| Closer regional airport | Lehigh Valley International Airport (ABE)8 miles away |
| Nearest city of 250,000+ | Philadelphia, PA39 miles away |
Straight-line distances from the center of Upper Saucon; 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.
Upper Saucon had 16,973 residents in the 2020 census, up 42% since 2000.
It’s the 128th 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 83°F in summer, and winter lows average 19°F. About 53.3 inches of rain and melted snow fall in a typical year, with about 41 inches of snow.
Source: NOAA 1991–2020 climate normals, Springtown 1 Nne, 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).
283 doctors and other health care providers list an office in Upper Saucon’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 34 |
|---|---|
| Specialist doctors | 40 |
| Dentists | 7 |
| Nurse practitioners and physician assistants | 92 |
| Mental health providers | 60 |
| Physical and occupational therapists | 37 |
| Optometrists | 5 |
| Chiropractors | 8 |
| Pharmacies | 5 |
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 (7 nearby)
Grocery stores (2 nearby)
Pharmacies (2 nearby)
Libraries (2 nearby)
Museums
Theaters and performance venues (1 nearby)
Counts are within about 3.5 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 Southern Lehigh SD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Hopewell El SchCenter Valley | K–3 | 426 | Public | 1.2 mi |
| Liberty Bell El SchCoopersburg | K–3 | 445 | Public | 1.7 mi |
| Southern Lehigh MSCenter Valley | 7–8 | 471 | Public | 0.2 mi |
| Southern Lehigh SHSCenter Valley | 9–12 | 1,013 | Public | 0.3 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 Bethlehem City (Northampton County), Fountain Hill, Salisbury Township (Lehigh County), Lower Saucon, Coopersburg, Springfield Township (Bucks County) and Lower Milford.
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.