73533 ZIP Code — Duncan, OK

Stephens County, Oklahoma

ZIP code 73533 is located in Duncan, Oklahoma, within Stephens County. It covers approximately 329.54 square miles and serves a population of 27,866 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 580.

About ZIP code 73533

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $129,300. Owner-occupancy sits near the national average at 71%.

Median household income is $56,934. SNAP benefit usage at 19% of households reflects economic stress in the area. 39% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 23 minutes is near the national average.

College attainment at 19% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (22%) compared to national benchmarks. 15% of residents lack health insurance, above the national average.

Overall, ZIP code 73533 reflects a community defined by a trades-oriented workforce, a significant Social Security-dependent population, and elevated reliance on food assistance.

27,866

population

329.54

sq mi land

Standard

ZIP type

Central (CT)

timezone

73533 ZIP code map

Cities in ZIP code 73533

Below are the cities the US Postal Service accepts for ZIP code 73533. Using any city not on this list may result in mail delivery delays.

City	Status
Duncan	Acceptable
Duncan	Preferred

Nearby ZIP codes

73536 Duncan (6.9 mi) 73529 Comanche (8.3 mi) 73055 Marlow (10.5 mi) 73442 Loco (13.8 mi) 73573 Waurika (19.1 mi)

Demographics updated 05/2026

Population
Total population	27,866
Population density	85 / sq mi
State FIPS	40
County FIPS	137

Geography
Land area	329.54 sq mi
Water area	4.26 sq mi
Latitude	34.4527
Longitude	-97.8522
Timezone	Central (CT)
Area code	580

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	48.0%	48.7%	46.5%
$50k – $100k	33.6%	33.2%	31.0%
$100k – $200k	15.8%	15.5%	18.1%
Over $200k	2.6%	2.6%	4.5%

Demographics & statistics

27,866

Population

People per sq mi

39.5

Median age

$56,934

Median household income

$31,495

Per capita income

$129,300

Median home value

$842

Median monthly rent

71.0%

Home ownership

17.4%

Poverty rate

4.7%

Unemployment

9,820

Housing units

19.2%

Bachelor's or higher

Age distribution

Male Female

794

Under 5

842

795

5–9

844

940

10–14

997

900

15–19

955

767

20–24

815

1,660

25–34

1,762

1,707

35–44

1,812

1,485

45–54

1,576

787

55–59

835

1,003

60–64

1,065

1,597

65–74

1,696

755

75–84

802

327

85+

348

← Male

Female →

Age summary

Group	Count	%
Under 18	6,389	22.9%
18 and over	21,477	77.1%
65 and over	5,525	19.8%
Median age	39.5 years

Race & ethnicity

White 73.2%

Two or more races 9.1%

Hispanic or Latino 6.6%

Other race 4.1%

American Indian / Alaska Native 3.9%

Black or African American 2.3%

Asian 0.6%

Native Hawaiian / Pacific Islander 0.2%

Group	Count	%
White	21,844	73.2%
Two or more races	2,713	9.1%
Hispanic or Latino	1,983	6.6%
Other race	1,214	4.1%
American Indian / Alaska Native	1,156	3.9%
Black or African American	673	2.3%
Asian	193	0.6%
Native Hawaiian / Pacific Islander	73	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	48.0%	48.7%	46.5%
$50k – $100k	33.6%	33.2%	31.0%
$100k – $200k	15.8%	15.5%	18.1%
Over $200k	2.6%	2.6%	4.5%

Under $10k 6.9%

$10k–$15k 5.3%

$15k–$25k 8.7%

$25k–$35k 11.2%

$35k–$50k 12.0%

$50k–$75k 18.4%

$75k–$100k 14.3%

$100k–$150k 11.9%

$150k–$200k 6.5%

$200k+ 4.8%

Range	% of households
Under $10k	6.9%
$10k–$15k	5.3%
$15k–$25k	8.7%
$25k–$35k	11.2%
$35k–$50k	12.0%
$50k–$75k	18.4%
$75k–$100k	14.3%
$100k–$150k	11.9%
$150k–$200k	6.5%
$200k+	4.8%
Median income	$56,934

Housing

Home values

Under $50k 15.5%

$50k–$100k 21.3%

$100k–$150k 21.7%

$150k–$200k 17.0%

$200k–$300k 15.8%

$300k–$500k 6.5%

$500k–$1M 1.9%

$1M+ 0.3%

Housing overview

Metric	Value
Median home value	$129,300
Median rent / month	$842
Owner occupied	71.0%
Renter occupied	29.0%
Vacant	15.2%
Single-family detached	83.0%
Large apartment buildings	2.6%
Mobile homes	4.3%
Median rooms	5.6
Avg household size (owned)	2.49

Year built

Era	%
2020 or later	0.2%
2010–2019	2.6%
2000–2009	6.2%
1990–1999	7.9%
1980–1989	14.5%
1970–1979	24.0%
1960–1969	12.3%
1950–1959	15.9%
1940–1949	8.3%
1939 or earlier	8.0%

Bedrooms

Size	% of units
No bedroom (studio)	1.9%
1 bedroom	6.6%
2 bedrooms	28.1%
3 bedrooms	51.3%
4 bedrooms	10.8%
5+ bedrooms	1.3%

Vehicles per household

Vehicles	% of households
No vehicle	8.6%
1 vehicle	31.0%
2 vehicles	37.5%
3 or more	23.0%

Heating fuel

Fuel type	%
Utility gas	52.7%
Electricity	39.0%
Propane / LP gas	3.9%
Fuel oil	0.1%
Wood	1.7%
Solar	0.3%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	5,561	50.3%
Cohabiting couple	715	6.5%
Male householder, no spouse	1,854	16.8%
Female householder, no spouse	2,918	26.4%
Households with children under 18	3,354	30.4%
Households with seniors (65+)	4,002	36.2%
Average household size	2.48

Marital status

Status	Male	Female
Never married	28.2%	20.5%
Married	52.6%	52.0%
Separated	1.9%	1.4%
Widowed	3.8%	11.9%
Divorced	13.5%	14.2%

Education

Less than 9th grade 4.0%

Some HS, no diploma 8.9%

HS graduate 40.8%

Some college, no degree 22.4%

Associate's degree 4.8%

Bachelor's degree 12.2%

Graduate / professional 7.0%

Metric	%
HS diploma or higher	87.2%
Bachelor's or higher	19.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	344	5.6%
Kindergarten	395	6.4%
Elementary school	2,819	46.0%
High school	1,737	28.3%
College / grad school	835	13.6%

Employment

Industry of employment

Education & healthcare 19.5%

Retail trade 16.4%

Agriculture & mining 11.5%

Manufacturing 9.0%

Construction 8.0%

Arts, food & hospitality 8.0%

Professional & management 7.2%

Other services 5.2%

Transportation & utilities 4.9%

Finance & real estate 4.4%

Public administration 3.4%

Wholesale trade 1.7%

Information 0.8%

Occupation

Category	%
Management, business & arts	30.4%
Service	14.0%
Sales & office	21.9%
Natural resources & construction	15.0%
Production & transportation	18.8%

Employment type

Type	%
Private sector	82.0%
Government	10.6%
Self-employed	7.0%
Unpaid family workers	0.4%

Commute

Method	%
Drive alone	80.8%
Carpool	12.6%
Public transit	0.0%
Walk	1.3%
Work from home	3.5%
Other means	1.8%
Avg commute (minutes)	22.5

Poverty

All people 17.4%

Under 18 years 23.2%

18 and over 15.7%

Married-couple families 7.5%

Female-led households 31.9%

Income support

Source	% of households
Social Security	38.8%
Retirement income	23.0%
Supplemental Security	7.4%
Cash public assistance	3.4%
Food stamps / SNAP	18.6%

Health indicators

Condition	%
Obesity	40.4%
High blood pressure	40.6%
High cholesterol	36.0%
Diabetes	12.4%
Heart disease	8.1%
Stroke	3.9%
Asthma	10.9%
Arthritis	29.4%
Kidney disease	3.5%
Pulmonary disease	9.6%
Cancer	7.5%

Behavior / access	%
Smoking	21.6%
Binge drinking	12.1%
No physical activity	32.9%
Less than 7 hrs sleep	34.8%
Depression	25.0%
Fair or poor health	19.5%
Poor mental health	16.7%
Poor physical health	13.4%
No health insurance	18.9%
Visited doctor (checkup)	75.4%
Visited dentist	56.2%
Cholesterol screening	88.1%
Teeth loss	18.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,937	9.0%

Disability	%
Any disability	21.2%
Under 18	5.0%
18–64 years	18.7%
65 and over	48.2%

Health insurance coverage

Type	%
Private insurance	55.2%
Public insurance	44.3%
No insurance	15.2%
Uninsured under 19	7.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	26,230	94.1%
Spanish	638	2.4%
Other Indo-European	519	2.0%
Asian & Pacific Islander	48	0.2%
Other languages	71	0.3%

Place of birth & citizenship

Origin	Count	%
Native born (US)	26,932	96.6%
Born in same state	26,738	96.0%
Born in different state	18,110	65.0%
Foreign born	194	0.7%
Naturalized citizen	934	3.4%
Not a US citizen	351	37.6%

Ancestry

Ancestry	Count	%
Italian	3,210	11.5%
French	2,909	10.4%
Arab	2,605	9.3%
English	251	0.9%

Ancestry	Count	%
Polish	211	0.8%
Irish	103	0.4%
German	6	0%
Dutch	2	0%

Technology access

Metric	% of households
Computer access	39.6%
Internet access	90.9%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 73533

What city is ZIP code 73533 in?

ZIP code 73533 is primarily assigned to Duncan, Oklahoma.

What county is ZIP code 73533 in?

ZIP code 73533 falls within Stephens County, Oklahoma.

What is the poverty rate in ZIP code 73533?

17% of residents in ZIP code 73533 live below the poverty line, above the national average.

Does ZIP code 73533 have a large retiree population?

39% of households in ZIP code 73533 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 73533?

The median home value in ZIP code 73533 is $129,300.

What is the population of ZIP code 73533?

ZIP code 73533 has an estimated population of 27,866 residents, with a density of 85 people per square mile.

What timezone is ZIP code 73533 in?

ZIP code 73533 observes the CST timezone.