Hillsgrove is a township in Sullivan County, Pennsylvania, home to about 262 people across 29 square miles. Its ZIP code is 18619, and parts of 17701 and 18616 are in Hillsgrove too.
Homes sold for a median of $167 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Hillsgrove; also Fox Township and Plunketts Creek
Mostly Williamsport; part is in Hillsgrove
Mostly Elkland Township; part is in Hillsgrove
Each card is that ZIP code’s whole market, including any part outside Hillsgrove. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Hillsgrove’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Syracuse Hancock International Airport (SYR)124 miles away |
|---|---|
| Closer regional airport | Williamsport Regional Airport (IPT)12 miles away |
| Nearest city of 250,000+ | Philadelphia, PA129 miles away |
Straight-line distances from the center of Hillsgrove; 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.
Hillsgrove had 227 residents in the 2020 census, down 14% since 2000.
It’s the 2395th largest of 2,568 towns in Pennsylvania by population.
Sullivan County grew from 12,134 residents in 1900 to 5,840 in 2020.
Sullivan 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 43.7 inches of rain and melted snow fall in a typical year, with about 36 inches of snow.
Source: NOAA 1991–2020 climate normals, Williamsport, PA weather station (12 miles away).
1,022 jobs at 156 businesses in Sullivan 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.
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Shares ZIP codes with Williamsport, Loyalsock, Old Lycoming, Eldred Township (Lycoming County), Plunketts Creek, Elkland Township, Forksville, Forks Township, Fox Township and Overton.
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.