Lower Mahanoy is a township in Northumberland County, Pennsylvania, home to about 1,432 people across 22 square miles. Its ZIP code is 17017, and parts of 17830 are in Lower Mahanoy too.
Homes sold for a median of $212 per square foot in the three months ending August 2026, a seller’s market.
Mostly Lower Mahanoy; also Upper Paxton and Mifflin Township (Dauphin County)
Mostly Jordan Township (Northumberland County); part is in Lower Mahanoy
Each card is that ZIP code’s whole market, including any part outside Lower Mahanoy. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Philadelphia International Airport (PHL)101 miles away |
|---|---|
| Closer regional airport | Harrisburg International Airport (MDT)32 miles away |
| Nearest city of 250,000+ | Baltimore, MD94 miles away |
| Nearest city of 1 million+ | Philadelphia, PA102 miles away |
Straight-line distances from the center of Lower Mahanoy; 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 Mahanoy had 1,626 residents in the 2020 census, up 3% since 2000.
It’s the 1480th largest of 2,568 towns in Pennsylvania by population.
Northumberland County grew from 90,911 residents in 1900 to 91,647 in 2020.
Northumberland 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 19°F. About 43.3 inches of rain and melted snow fall in a typical year, with about 29 inches of snow.
Source: NOAA 1991–2020 climate normals, Selinsgrove 2 S, PA weather station (9 miles away).
23,047 jobs at 1,611 businesses in Northumberland County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Parks (2 nearby)
Counts are within about 3 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.
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Shares ZIP codes with Jordan Township (Northumberland County), Jackson Township (Northumberland County), Upper Paxton, Herndon and Mifflin Township (Dauphin 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.