Duncan is a town in Greenlee County, Arizona, home to about 969 people across 2.1 square miles. Its ZIP code is 85534.
Mostly Duncan; also York and Franklin
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| Nearest major airport | Tucson International Airport (TUS)113 miles away |
|---|---|
| Closer regional airport | Grant County Airport (SVC)64 miles away |
| Nearest city of 250,000+ | Tucson, AZ109 miles away |
| Nearest city of 1 million+ | Phoenix, AZ173 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 694 residents in the 2020 census, down 15% since 2000.
It’s the 211th largest of 441 towns in Arizona by population.
Greenlee County grew from 15,362 residents in 1920 to 9,563 in 2020.
Greenlee County, 1920–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 98°F in summer, and winter lows average 25°F. About 10.4 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Duncan, AZ weather station (11 miles away).
4,213 jobs at 88 businesses in Greenlee County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
3 doctors and other health care providers list an office in Duncan.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 3 |
|---|---|
| Pharmacies | 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.
Public schools here are run by Duncan Unified District (4228), Gila Institute for Technology (79387). Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Duncan ElementaryDuncan | Pre-K–8 | 256 | Public | 11.9 mi |
| Duncan High SchoolDuncan | 9–12 | 113 | Public | 12.4 mi |
| GIFT - Duncan High SchoolDuncan | 9–12 | — | Career and Technical | 12.4 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with York and Franklin.
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.