Duncan, OK demographics:
population, income, and more

Total population
22,958
0.4% year-over-year change
Median household income
$58,054/yr
1.8% year-over-year change
Housing units
11,106
0.1% year-over-year change

Duncan population

How many people live in Duncan

Duncan is home to 22,958 residents, according to the most recent Census data. Gender-wise, 48.9% of Duncan locals are male, and 51.1% are female.

Total population
22,958
0.4% year-over-year change
Gender ratio
Male
48.9%
11,230
Female
51.1%
11,728
Value Percent YoY change
Male 11,230 48.9% 1.0%
Female 11,728 51.1% -0.2%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Duncan is 40, with the population distributed as follows: about 18% are children under 15, then 13% are in the 15 to 24 age group. Adults between 25 and 44 make up 24.5% of the population, while another 23.7% fall into the 45 to 64 bracket. Finally, around 20.9% are 65 or older.

Median age
39.9
Age breakdown
Under 15
18%
15 to 24
13%
25 to 44
24.5%
45 to 64
23.7%
Over 65
20.9%
Value Percent YoY change
Under 15 4,134 18% -0.8%
15 to 24 2,974 13% 4.8%
25 to 44 5,617 24.5% -1.4%
45 to 64 5,436 23.7% -0.8%
Over 65 4,797 20.9% 2.4%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Duncan, 95.7% of the population are US-born citizens, while 2.1% have gained naturalized citizenship. At the same time, 2.2% of residents are non-citizens. As for race, 77.2% of locals are Caucasian, 2.4% are African American and 0.7% have Asian roots. There’s also a share of 14.5% that includes residents with two or more races.

Citizenship
U.S.-born citizens
95.7%
Non-U.S.-born citizens
2.1%
Non-citizens
2.2%
Value Percent YoY change
U.S.-born citizens 21,980 95.7% 0.2%
Non-U.S.-born citizens 484 2.1% 10.5%
Non-citizens 494 2.2% -1.0%
Racial breakdown
White
77.2%
Black or African American
2.4%
American Indian and Alaska Native
3%
Asian
0.7%
Native Hawaiian and other Pacific Islander
0%
Two or more races
14.5%
Other
2.2%
Value Percent
White 17,736 77.2%
Black or African American 555 2.4%
American Indian and Alaska Native 679 3%
Asian 156 0.7%
Two or more races 3,334 14.5%
Other 498 2.2%

Households in Duncan

A peek inside Duncan households

Duncan has 9,492 households, with an average of 2 members in each. Of these, 65.2% are families, while the remaining 34.8% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
9,492
1.7% year-over-year change
Average people per household
2
Non-family households
3,308
Family households
6,184
Value Percent YoY change
Non-family households 3,308 34.8% 2.9%
Family households 6,184 65.2% 1.1%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Duncan

The housing landscape of Duncan

Duncan's housing consists of 11,106 units, with 84% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 3% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 2.4% of the housing landscape.

Housing units
11,106
0.1% year-over-year change
Housing types
Value Percent
1 unit, detached 9,331 84%
1 unit, attached 337 3%
2 units 235 2.1%
3 or 4 units 207 1.9%
5 to 9 units 244 2.2%
10 to 19 units 120 1.1%
20 to 49 units 77 0.7%
50 or more units 230 2.1%
Mobile home 265 2.4%
Boat, RV, van, etc. 60 0.5%
Homes built since 2020
12
0.0% year-over-year change

The age of buildings in Duncan

In Duncan, the median construction year is 1972. About 9.2% of homes were built before the 1940s, with another 8% going up by 1949. Most development happened in the second half of the 20th century. Then, 6.9% of homes were added from 2000 to 2009, 3.1% between 2010 and 2019, and 0.1% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 1,022 9.2% 6.0%
Built between 1940 and 1949 887 8% -7.9%
Built between 1950 and 1959 1,777 16% -1.7%
Built between 1960 and 1969 1,419 12.8% 0.3%
Built between 1970 and 1979 2,526 22.7% -3.8%
Built between 1980 and 1989 1,645 14.8% 2.6%
Built between 1990 and 1999 712 6.4% -6.2%
Built between 2000 and 2009 765 6.9% 26.9%
Built between 2010 and 2019 341 3.1% 1.5%
Built in 2020 or later 12 0.1% 0.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Duncan occupancy rates

Out of the 9,492 occupied housing units in Duncan, 67.7% are owner-occupied, while 32.3% are lived in by tenants. Meanwhile, 14.5% of all homes on the local market sit vacant.

Occupied housing units
9,492
1.7% year-over-year change
Occupancy breakdown
Renter occupied
3,068
Owner occupied
6,424
Value Percent YoY
change
Renter occupied 3,068 32.3% 2.0%
Owner occupied 6,424 67.7% 1.6%
Unoccupied housing units
14.5%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Duncan housing costs

Housing costs in Duncan come to a median of $859 per month, while tenants specifically pay a median gross rent of $896.

Median housing costs per month
$859/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Duncan
$896/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Duncan

Duncan education at a glance

About 51.6% of the population in Duncan went to high school, while 22% pursued college studies. Another 4.7% earned an associate degree and 11.4% hold a bachelor’s. Meanwhile, 6.8% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 628 3.5% -14.9%
High school diploma 9,204 51.6% 0.7%
College diploma 3,934 22% -0.6%
Associate degree 831 4.7% 7.6%
Bachelor's degree 2,033 11.4% 4.2%
Graduate degree 1,211 6.8% 2.3%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Duncan

How much people earn in Duncan

The average annual household income in Duncan was $80,829 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +0.3% change from the previous year. At the same time, the median income stood at $58,054, reflecting a +1.8% shift over the same period.

Average household income in Duncan
$80,829/year
0.3% year-over-year change
Median household income in Duncan
$58,054/year
1.8% year-over-year change

Duncan income by age

In Duncan, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $55,594. Those with someone between 45 and 64 in charge, often well established professionally, earn $72,326 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $36,900, while those led by someone over 65, many of whom may be retired, have about $51,364 in earnings. Overall, 79.6% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $36,900 -17.5%
25 - 44 $55,594 4.0%
45 - 64 $72,326 0.6%
Over 65 $51,364 -4.4%
Above poverty level
17,695
Below poverty level
4,526
Value Percent YoY
change
Above poverty level 17,695 79.6% 0.1%
Below poverty level 4,526 20.4% 0.5%

Average renter income in Duncan

To get a better sense of what renters earn on average in Duncan, their median household income was $33,852 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 31.8%, shows what portion of their earnings goes toward housing expenses.

Renter median household income
$33,852
Rent-to-income ratio
31.8%
Understanding the rent-to-income ratio can help renters gauge if local housing costs align with their earnings. A ratio under 30% usually signals affordability, while exceeding this mark means rent is taking a larger-than-recommended bite out of income. That could make it harder for you to cover other costs like transportation, healthcare, or child care.

Employment in Duncan

Workforce and job types in Duncan

The job market in Duncan is powered by 9,255 working residents, spread across a range of industries and roles. 67.1% of the working population are employed in professional or administrative positions, while 32.9% are in hands-on or service-based jobs. Also, 10.9% run their own businesses, 66.9% are employed by private companies, and 13.8% work in the public sector.

Workforce demographics

Working population
9,255
-2.1% year-over-year change
White collar
6,214
Blue collar
3,041
Value Percent YoY change
White collar 6,214 67.1% -1.8%
Blue collar 3,041 32.9% -2.6%
Employer type
Self employees
10.9%
Private companies
66.9%
Governmental workers
13.8%
Not for profit companies
8.4%
Value Percent YoY change
Self employees 1,011 10.9% 6.1%
Private companies 6,189 66.9% -7.9%
Governmental workers 1,281 13.8% 31.0%
Not for profit companies 774 8.4% -3.2%
Unemployment rate
6.8%
10.4% year-over-year change

Available workforce

The unemployment rate in Duncan stands at 6.8%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Duncan

How people get around in Duncan

Commuting methods vary: 91.8% of residents travel by personal vehicle and 1.1% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 8,342 91.8% -2.8%
Bus or trolleybus 24 0.3% 14.3%
Motorcycle 23 0.2% 0.0%
Bicycle 43 0.5% -31.8%
Walk 98 1.1% 34.2%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Duncan by zipcode?

Zipcode Population Number of households Median income Average income
73533 27,618 11,292 $59,906 $85,558

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FAQs about Duncan demographics 

What is the total population of Duncan?

Duncan has a total population of 22,958 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.4% compared to a year ago.

What is the gender ratio in Duncan?

The gender ratio in Duncan is as follows:
  • 48.9% males (11,230 residents)
  • 51.1% females (11,728 residents)

What is the median age in Duncan?

The median age in Duncan is 39.9.

What is the age distribution of the population in Duncan?

The age distribution in Duncan is as follows:
  • Under 15: 18% (4,134 residents)
  • Ages 15-24: 13% (2,974 residents)
  • Ages 25-44: 24.5% (5,617 residents)
  • Ages 45-64: 23.7% (5,436 residents)
  • Over 65: 20.9% (4,797 residents)

What is the racial and ethnic makeup of Duncan?

The racial and ethnic makeup of Duncan is as follows:
  • White: 77.2% (17,736 residents)
  • Black or African American: 2.4% (555 residents)
  • American Indian and Alaska Native: 3% (679 residents)
  • Asian: 0.7% (156 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 14.5% (3,334 residents)
  • Other: 2.2% (498 residents)

What percentage of the population in Duncan are U.S.-born citizens?

U.S.-born citizens represent 95.7% of the population in Duncan.

How many housing units are there in Duncan?

There are 11,106 housing units in Duncan, reflecting a +0.1% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Duncan and what is the average household size?

Duncan has a total of 9,492 households, with an average of 2 people in each.

What is the median household income in Duncan?

Duncan has a median household income of $58,054, representing a +1.8% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Duncan?

The employment rate is 93.2% in Duncan, with a workforce of 9,255 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 67.1% (6,214 residents)
  • Blue-collar workers: 32.9% (3,041 residents)

Places of employment:
  • Self-employed: 10.9% (1,011 residents)
  • Private companies: 66.9% (6,189 residents)
  • Governmental workers: 13.8% (1,281 residents)
  • Not-for-profit companies: 8.4% (774 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025