Portland is a borough in Northampton County, Pennsylvania, home to about 546 people across 0.5 square miles. Its ZIP code is 18351, and parts of 18343 are in Portland too.
Homes sold for a median of $148 per square foot in the three months ending August 2026, a seller’s market.
All in Portland
Mostly Upper Mount Bethel; part is in Portland
Each card is that ZIP code’s whole market, including any part outside Portland. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Portland’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Newark Liberty International Airport (EWR)51 miles away |
|---|---|
| Closer regional airport | Lehigh Valley International Airport (ABE)25 miles away |
| Nearest city of 250,000+ | Newark, NJ50 miles away |
| Nearest city of 1 million+ | Philadelphia, PA63 miles away |
Straight-line distances from the center of Portland; 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.
Portland had 494 residents in the 2020 census, down 15% since 2000.
It’s the 2115th 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 84°F in summer, and winter lows average 18°F. About 48.3 inches of rain and melted snow fall in a typical year, with about 23 inches of snow.
Source: NOAA 1991–2020 climate normals, Belvidere Brg, NJ weather station (6 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 doctors and other health care providers list an office in Portland.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| 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 (5 nearby)
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.
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Shares ZIP codes with Upper Mount Bethel.
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.