Duncan is a city in Stephens County, Oklahoma, home to about 22,958 people across 43 square miles. Its ZIP codes are 73434 and 73533, and parts of 73055 and 73529 are in Duncan too.
Homes sold for a median of $103 per square foot across 2 ZIP codes in the three months ending August 2026, and 0 of 2 were seller’s markets.
Mostly Duncan; also Foster
Mostly Duncan; also Empire City and Central High
Mostly Marlow; part is in Duncan
Mostly Comanche; 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 | OKC Will Rogers World Airport (OKC)62 miles away |
|---|---|
| Closer regional airport | Lawton Fort Sill Regional Airport (LAW)27 miles away |
| Nearest city of 250,000+ | Oklahoma City, OK69 miles away |
| Nearest city of 1 million+ | Dallas, TX138 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 22,692 residents in the 2020 census, up 1% since 2000.
It’s the 20th largest of 827 towns in Oklahoma by population.
Stephens County grew from 22,252 residents in 1910 to 42,848 in 2020.
Stephens County, 1910–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 94°F in summer, and winter lows average 28°F. About 37.2 inches of rain and melted snow fall in a typical year, with about 3 inches of snow.
Source: NOAA 1991–2020 climate normals, Duncan, OK weather station (3 miles away).
12,439 jobs at 1,080 businesses in Stephens County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
211 doctors and other health care providers list an office in Duncan’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 28 |
|---|---|
| Specialist doctors | 22 |
| Dentists | 21 |
| Nurse practitioners and physician assistants | 51 |
| Mental health providers | 47 |
| Physical and occupational therapists | 24 |
| Optometrists | 9 |
| Chiropractors | 9 |
| Pharmacies | 14 |
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 (17 nearby)
Grocery stores (2 nearby)
Pharmacies (2 nearby)
Libraries (2 nearby)
Museums (4 nearby)
Theaters and performance venues (1 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.
Established in 1892.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Empire, Duncan. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Empire EsDuncan | Pre-K–5 | 244 | Public | 8.4 mi |
| Will Rogers Pre-K CtrDuncan | Pre-K | 174 | Public | 1.9 mi |
| Emerson EsDuncan | K–5 | 336 | Public | 2.4 mi |
| Horace Mann EsDuncan | K–5 | 327 | Public | 2.7 mi |
| Mark Twain EsDuncan | K–5 | 160 | Public | 3.2 mi |
| Plato EsDuncan | K–5 | 283 | Public | 1.3 mi |
| Woodrow Wilson EsDuncan | K–5 | 321 | Public | 2.0 mi |
| Duncan MsDuncan | 6–8 | 696 | Public | 3.2 mi |
| Empire MsDuncan | 6–8 | 112 | Public | 8.4 mi |
| Duncan HsDuncan | 9–12 | 981 | Public | 2.6 mi |
| Empire HsDuncan | 9–12 | 150 | Public | 8.4 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 Marlow, Comanche, Central High, Bray, Sunray, Empire City and Foster.
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.