Lower Saucon is a township in Northampton County, Pennsylvania, home to about 11,089 people across 24 square miles. It has no ZIP code of its own: it’s part of 18015 and 18055.
Homes sold for a median of $203 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Bethlehem City (Northampton County); part is in Lower Saucon
Mostly Hellertown; part is in Lower Saucon
Each card is that ZIP code’s whole market, including any part outside Lower Saucon. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Lower Saucon’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Lower Saucon well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Philadelphia International Airport (PHL)50 miles away |
|---|---|
| Closer regional airport | Lehigh Valley International Airport (ABE)7 miles away |
| Nearest city of 250,000+ | Philadelphia, PA41 miles away |
Straight-line distances from the center of Lower 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.
Lower Saucon had 11,094 residents in the 2020 census, up 12% since 2000.
It’s the 234th largest of 2,568 towns in Pennsylvania by population.
Northampton County grew from 99,687 residents in 1900 to 312,951 in 2020.
Northampton 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 (4 miles away).
121,192 jobs at 6,529 businesses in Northampton County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1,619 doctors and other health care providers list an office in Lower Saucon’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 159 |
|---|---|
| Specialist doctors | 738 |
| Dentists | 36 |
| Nurse practitioners and physician assistants | 422 |
| Mental health providers | 216 |
| Physical and occupational therapists | 42 |
| Optometrists | 2 |
| Chiropractors | 4 |
| Pharmacies | 13 |
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 (52 nearby)
Grocery stores (7 nearby)
Pharmacies (8 nearby)
Libraries (5 nearby)
Museums (11 nearby)
Theaters and performance venues (7 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 Bethlehem Area SD, Saucon Valley SD, Southern Lehigh SD and others. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Donegan El SchBethlehem | Pre-K–5 | 467 | Public | 1.8 mi |
| Fountain Hill El SchBethlehem | Pre-K–5 | 530 | Public | 2.9 mi |
| Saucon Valley El SchHellertown | K–4 | 627 | Public | 1.3 mi |
| Southern Lehigh Intermediate SchBethlehem | 4–6 | 702 | Public | 4.3 mi |
| Saucon Valley MSHellertown | 5–8 | 599 | Public | 1.3 mi |
| Broughal MSBethlehem | 6–8 | 520 | Public | 2.4 mi |
| Lehigh Valley Charter High School for the ArtsBethlehem | 9–12 | 550 | Charter | 2.3 mi |
| Saucon Valley SHSHellertown | 9–12 | 627 | Public | 1.4 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| St Michael the Archangel SchoolBethlehem | Pre-K–8 | 249 | Roman Catholic | 2.9 mi |
| St Michael the Archangel SchoolBethlehem | Pre-K–8 | 248 | Roman Catholic | 2.9 mi |
| Holy Infancy SchoolBethlehem | K–8 | 139 | Roman Catholic | 2.0 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 Bethlehem City (Northampton County), Hellertown, Fountain Hill, Salisbury Township (Lehigh County), Upper Saucon, Williams and Springfield Township (Bucks County).
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.