Duncan is a township in Tioga County, Pennsylvania, home to about 188 people across 20 square miles. It has no ZIP code of its own: it’s part of 16901.
Homes sold for a median of $139 per square foot in the three months ending August 2026, a balanced market.
Mostly Wellsboro; part is in Duncan
Each card is that ZIP code’s whole market, including any part outside Duncan. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Duncan’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Frederick Douglass Greater Rochester International Airport (ROC)97 miles away |
|---|---|
| Closer regional airport | Elmira Corning Regional Airport (ELM)36 miles away |
| Nearest city of 250,000+ | Buffalo, NY112 miles away |
| Nearest city of 1 million+ | Philadelphia, PA165 miles away |
Straight-line distances from the center of Duncan; 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.
Duncan had 189 residents in the 2020 census, down 11% since 2000.
It’s the 2451st largest of 2,568 towns in Pennsylvania by population.
Tioga County grew from 49,086 residents in 1900 to 41,045 in 2020.
Tioga County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 79°F in summer, and winter lows average 14°F. About 42.5 inches of rain and melted snow fall in a typical year, with about 61 inches of snow.
Source: NOAA 1991–2020 climate normals, Wellsboro 4 Sw, PA weather station (5 miles away).
10,628 jobs at 868 businesses in Tioga County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
152 doctors and other health care providers list an office in Duncan.
Nearest hospitals
Providers with an office here
| Primary care doctors | 20 |
|---|---|
| Specialist doctors | 22 |
| Dentists | 7 |
| Nurse practitioners and physician assistants | 39 |
| Mental health providers | 31 |
| Physical and occupational therapists | 26 |
| Optometrists | 4 |
| Chiropractors | 3 |
| Pharmacies | 5 |
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 (4 nearby)
Grocery stores (2 nearby)
Pharmacies (2 nearby)
Libraries (1 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.
Public schools here are run by Wellsboro Area SD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Charlotte Lappla El SchWellsboro | K–1 | 156 | Public | 0.5 mi |
| Don Gill El SchWellsboro | 2–4 | 287 | Public | 0.5 mi |
| Rock L Butler MSWellsboro | 5–8 | 433 | Public | 0.9 mi |
| Wellsboro Area HSWellsboro | 9–12 | 496 | Public | 1.5 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Trinity Lutheran SchoolWellsboro | Pre-K–6 | 89 | Lutheran Church–Missouri Synod | 0.4 mi |
| Stony Fork Mennonite SchoolWellsboro | 1–9 | 21 | Mennonite | 5.1 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 Wellsboro, Charleston, Delmar, Shippen Township (Tioga County), Middlebury and Bloss.
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.