Thornbury Township (Delaware County) is a township in Delaware County, Pennsylvania, home to about 6,927 people across 9.2 square miles. Its ZIP codes are 19319 and 19373, and parts of 19342 are in Thornbury Township (Delaware County) too.
Homes sold for a median of $292 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Thornbury Township (Delaware County); also Thornbury Township (Chester County)
Mostly Thornbury Township (Delaware County); also Concord and Thornbury Township (Chester County)
Mostly Concord; part is in Thornbury Township (Delaware County)
Each card is that ZIP code’s whole market, including any part outside Thornbury Township (Delaware County). 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)15 miles away |
|---|---|
| Nearest city of 250,000+ | Philadelphia, PA21 miles away |
Straight-line distances from the center of Thornbury Township (Delaware 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.
Thornbury Township (Delaware County) had 6,904 residents in the 2020 census, down 3% since 2000.
It’s the 411th largest of 2,568 towns in Pennsylvania by population.
Delaware County grew from 94,762 residents in 1900 to 576,830 in 2020.
Delaware County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 89°F in summer, and winter lows average 27°F. About 41.8 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Marcus Hook, PA weather station (7 miles away).
237,233 jobs at 13,165 businesses in Delaware County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
5 doctors and other health care providers list an office in Thornbury Township (Delaware County)’s ZIP codes.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 2 |
|---|---|
| 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.
Parks (7 nearby)
Grocery stores (2 nearby)
Pharmacies
Libraries
Museums (1 nearby)
Theaters and performance venues (2 nearby)
Counts are within about 2 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.
Established in 1685.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
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Shares ZIP codes with Concord, Middletown Township (Delaware County), Edgmont, Chester Heights and Thornbury Township (Chester 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.