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zipcodes.pro — STATE/OK/COUNTY/STEPHENS

Stephens County, OK ZIP codes

There are 9 ZIP codes in Stephens County, OK, in 7 towns, from 73055 to 73536. The largest are 73533 (Duncan), 73055 (Marlow) and 73529 (Comanche).

The county seat is Duncan.

ZIP codes
9
Towns
7
County seat
Duncan
County FIPS
40137
Population
43,551
Median household income
$61,620
Land area
870 sq mi
Area code
580
Metro area
Duncan

Stephens County ZIP codes by town

Duncan (county seat)
73533, 73534, 73536

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Stephens County ZIP codes

730557342573434734427349173529735337353473536

The ZIP codes of Stephens County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Stephens County in numbers

About 43,551 people live in Stephens County, in 17,567 households, the 24th most populous of Oklahoma's 77 counties. The median household income is $61,620 a year, 5% below the Oklahoma median of $65,039 (US: $80,734). The median owner-occupied home is valued at $145,300 (27% below the Oklahoma median), and median gross rent is $895 a month. The median age is 41.0; 20.6% of adults 25 and over hold a bachelor's degree or higher (28.3% across Oklahoma); the average commute takes 24 minutes.

Population43,551Stephens43,551
Households17,567Stephens17,567
Median age41.0Stephens41.0Oklahoma37.0US 38.9
Median household income$61,620Stephens$61,620Oklahoma$65,039US $80,734
Median home value$145,300Stephens$145,300Oklahoma$199,800US $332,700
Median gross rent$895Stephens$895Oklahoma$1,014US $1,413
Bachelor's degree or higher20.6%Stephens20.6%Oklahoma28.3%US 35.7%
Mean commute23.7 minStephens23.7 minOklahoma22.4 minUS 26.4 min
Population density50 / sq miStephens50 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Stephens County

Largest towns in Stephens County
TownZIP codesPopulation
Duncan 3 22,958
Marlow 1 4,451
Comanche 1 1,545
Velma 1 590
Foster 1 254
Countyline 1 201
Loco 1 94

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Stephens County.

Not sure you are in Stephens County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Stephens County, with figures

ZIP codes in Stephens County
ZIP City Type Population Median income Median home
73055 Marlow , OK Standard 10,064 $65,991 $164,800
73425 Countyline , OK Standard 201 $35,637 —
73434 Foster , OK Standard 574 $63,214 $255,000
73442 Loco , OK Standard 275 $52,292 $133,900
73491 Velma , OK Standard 791 $83,750 $114,600
73529 Comanche , OK Standard 4,898 $70,143 $114,200
73533 Duncan , OK Standard 27,618 $59,906 $144,500
73534 Duncan , OK No street area — — —
73536 Duncan , OK No street area — — —

Cite this page

zipcodes.pro. “Stephens County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ok/county/stephens

Underlying data is public domain or openly licensed — sources, vintages and licences.