Guilford is a township in Franklin County, Pennsylvania, home to about 14,819 people across 51 square miles. Its ZIP codes are 17235 and 17261, and parts of 17202 and 17222 are in Guilford too.
Homes sold for a median of $89 per square foot in the three months ending August 2026.
All in Guilford
Mostly Hamilton Township (Franklin County); part is in Guilford
Mostly Greene Township (Franklin County); part is in Guilford
Each card is that ZIP code’s whole market, including any part outside Guilford. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Guilford’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Washington Dulles International Airport (IAD)67 miles away |
|---|---|
| Closer regional airport | Hagerstown Regional Richard A Henson Field (HGR)15 miles away |
| Nearest city of 250,000+ | Baltimore, MD68 miles away |
| Nearest city of 1 million+ | Philadelphia, PA131 miles away |
Straight-line distances from the center of Guilford; 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.
Guilford had 14,627 residents in the 2020 census, up 12% since 2000.
It’s the 165th largest of 2,568 towns in Pennsylvania by population.
Franklin County grew from 54,902 residents in 1900 to 155,932 in 2020.
Franklin 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 23°F. About 43.4 inches of rain and melted snow fall in a typical year, with about 31 inches of snow.
Source: NOAA 1991–2020 climate normals, Chambersburg 1 Ese, PA weather station (3 miles away).
52,942 jobs at 3,111 businesses in Franklin County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
6 doctors and other health care providers list an office in Guilford’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 5 |
|---|---|
| Mental health providers | 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 (9 nearby)
Grocery stores (9 nearby)
Pharmacies (2 nearby)
Libraries (3 nearby)
Theaters and performance venues (3 nearby)
Counts are within about 4.5 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 South Mountain Secure Trmnt Unit. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| South Mountain Secure Trmnt UnSouth Mountain | 7–12 | 24 | Alternative Education | 7.3 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Abraxas Youth CenterSouth Mountain | 7–12 | 58 | Nonsectarian | 7.2 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 Hamilton Township (Franklin County), Greene Township (Franklin County), Antrim, St. Thomas, Franklin Township (Adams County), Quincy and Hamiltonban.
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.