Gregg Township (Union County) is a township in Union County, Pennsylvania, home to about 4,010 people across 15 square miles. Its ZIP code is 17810, and parts of 17856 are in Gregg Township (Union County) too.
Homes sold for a median of $200 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Gregg Township (Union County); also Washington Township (Lycoming County)
Mostly White Deer; part is in Gregg Township (Union County)
Each card is that ZIP code’s whole market, including any part outside Gregg Township (Union County). Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Gregg Township (Union County)’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)125 miles away |
|---|---|
| Closer regional airport | Williamsport Regional Airport (IPT)9 miles away |
| Nearest city of 250,000+ | Philadelphia, PA123 miles away |
Straight-line distances from the center of Gregg Township (Union County); 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.
Gregg Township (Union County) had 4,096 residents in the 2020 census, down 13% since 2000.
It’s the 714th largest of 2,568 towns in Pennsylvania by population.
Union County grew from 17,592 residents in 1900 to 42,681 in 2020.
Union 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 (9 miles away).
16,233 jobs at 960 businesses in Union County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
15 doctors and other health care providers list an office in Gregg Township (Union County).
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Specialist doctors | 3 |
| Dentists | 1 |
| Nurse practitioners and physician assistants | 7 |
| Mental health providers | 3 |
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.
Grocery stores
Pharmacies
Counts are within about 2.5 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.
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Leisure Acre SchoolAllenwood | 1–8 | 29 | Amish | 3.8 mi |
| South Creek Amish SchoolAllenwood | 1–8 | 17 | Amish | 1.6 mi |
| White Deer SchoolAllenwood | 1–8 | 22 | Amish | 2.7 mi |
| Scenic Mountain SchoolAllenwood | 2–8 | 18 | Amish | 0.9 mi |
Source: U.S. Department of Education, NCES: Common Core of Data 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 White Deer, Washington Township (Lycoming County) and West Buffalo.
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.