Duncan, Oklahoma Population 2022

22,293
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Duncan is a city located in Stephens County Oklahoma. Duncan has a 2020 population of 22,293. It is also the county seat of Stephens County. Duncan is currently declining at a rate of -0.08% annually and its population has decreased by -4.89% since the most recent census, which recorded a population of 23,439 in 2010.

The average household income in Duncan is $61,315 with a poverty rate of 16.53%. The median rental costs in recent years comes to $699 per month, and the median house value is $116,800. The median age in Duncan is 38.1 years, 36 years for males, and 39.9 years for females.

Duncan Demographics

According to the most recent ACS, the racial composition of Duncanwas:

  • White: 78.90%
  • Two or more races: 6.03%
  • Other race: 5.93%
  • Native American: 4.88%
  • Black or African American: 3.26%
  • Asian: 0.79%
  • Native Hawaiian or Pacific Islander: 0.21%
The current population of Duncan, Oklahoma is 22,293 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 22,293.The last official US Census in 2010 recorded the population at 23,439.

Duncan, Oklahoma Population 2022

2021 and 2022 population is estimated by projecting the 2019 numbers.

Year Population Growth Growth Rate
201045,1000.00%
201145,10440.01%
201244,881-223-0.50%
201344,976950.21%
201444,563-413-0.93%
201544,576130.03%
201643,998-578-1.31%
201743,340-658-1.52%
201843,179-161-0.37%
201943,143-36-0.08%
202043,107-36-0.08%
202143,071-36-0.08%

Duncan Metro Area Population by Year

Population by Race

Race Population Percentage
White17,77578.90%
Black or African American7343.26%
American Indian and Alaska Native1,1004.88%
Asian1770.79%
Native Hawaiian and Other Pacific Islander480.21%
Some Other Race1,3375.93%
Two or More Races1,3586.03%
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Duncan Population by Race

Duncan Population Pyramid 2022

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Duncan Median Age

38.7


Total

36.3


Male

40.5


Female

Duncan Adults

There are 17,184 adults, (4,064 of whom are seniors) in Duncan.

Duncan Age Dependency

Age Dependency Ratio

31

Old Age Dependency Ratio

40.7

Child Dependency Ratio

Duncan Sex Ratio

Female

11,729

52.06%

Male

10,800

47.94%

Duncan Population by Age

Duncan Renter vs Owner Occupied by Household Type

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Duncan Household Types

Type Owner Renter
Married82.1%17.9%
All68.7%31.3%
Female58.2%41.8%
Male57.8%42.2%
Non Family55.6%44.4%

68.7%

Rate of Home Ownership

Duncan Households and Families

Type Count Average Size Owned
All8,8622.4968.7
Married4,2243.1182.1
Male2963.5757.8
Female1,2343.2958.2
Non Family3,1081.2355.6

3.05

Average Family Size

2.49

Average Household Size

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Duncan Households by Type

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Education Attained Count Percentage
Less Than 9th Grade5743.71%
9th to 12th Grade1,5139.79%
High School Graduate6,22740.28%
Some College3,27721.20%
Associates Degree6834.42%
Bachelors Degree2,02313.09%
Graduate Degree1,1617.51%
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Duncan Educational Attainment by Sex (over 25)

Duncan Educational Attainment by Race

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Race Total High School Bachelors
Islander373724
White12,33310,9702,807
2+ Races862685185
Asian1149822
Black49835460
Native American57653353
Hispanic1,28288674
Other Race6213861

The highest rate of high school graduation is among islander people with a rate of 100.00%.

The highest rate of bachelors degrees is among islander people with a rate of 64.86%.

Duncan Educational Attainment by Race

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Name Average Male Female
Overall$32,536$41,670$25,488
Less Than 9th Grade$25,409$31,886$14,167
High School Graduate$29,989$36,953$21,850
Some College$36,592$47,981$27,330
Bachelors Degree$41,875$55,114$37,778
Graduate Degree$61,488$70,913$56,635

$32,536

Average Earnings

$41,670

Average Male

$25,488

Average Female

Duncan Earnings by Educational Attainment

Duncan Language by Age

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Duncan Language

91.45% of Duncan residents speak only English, while 8.55% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 6.71% of the population.

Duncan Language

Duncan Poverty by Race

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Name Total In Poverty Poverty Rate
Asian1775531.07%
Native1,05822120.89%
Hispanic2,52246618.48%
White16,6772,71016.25%
Black678213.10%
Other357NaN%
Multiple1,32019314.62%

16.53%

Overall Poverty Rate

14.50%

Male Poverty Rate

18.37%

Female Poverty Rate

Poverty in Duncan

The race most likely to be in poverty in Duncan is Asian, with 31.07% below the poverty level.

The race least likely to be in poverty in Duncan is Multiple, with 14.62% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 5.13%. Among those working part-time, it was 17.27%, and for those that did not work, the poverty rate was 21.73%.

Duncan Poverty

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Name Poverty
Less Than 9th Grade23.90%
High School15.31%
Some College13.79%
Bachelors or Greater3.52%

Duncan Poverty Rate by Education

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Rate Poverty
Male Employed6.99%
Male Unemployed31.19%
Female Employed9.82%
Female Unemployed53.36%

Duncan Poverty Rate by Employment Status and Sex

Duncan Income by Household Type

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Name Median Mean
Households$50,017$63,271
Families$59,387$74,333
Married Families$72,267-
Non Families$30,205$38,760
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Income by Household Type

Duncan Marital Status

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Marriage Rates

49.2%

Overall Marriage Rate

50.3%

Male Marriage Rate

48.2%

Female Marriage Rate

Duncan Married by Age and Sex

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Duncan Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Duncan Marital Status by Race

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Duncan Marital Status

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1,555

Number of Veterans

Male Veterans

Female Veterans

War Veterans
Second Gulf War443
First Gulf War366
Vietnam537
Korea113
World War II75

Duncan Veterans by War

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Age Group Veterans
18 to 34165
35 to 54443
55 to 64282
65 to 74315
75+350

Duncan Veterans by Age

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Name Veterans % of Total
White1,3049.37%
Black5610.43%
Native American8712.99%
Other Race80.89%
2+ Races10010.55%
Hispanic633.82%

Duncan Veterans by Race

Duncan Veterans by Education

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9.22%

Veteran Poverty Rate

42.87%

Veteran Disability Rate

Duncan Veterans by Education

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57.1%

Labor Force Participation

53.4%

Employment Rate

6.2%

Unemployment Rate

Duncan Employment by Age

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Duncan Employment by Race

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Duncan Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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64.27%

Born in Duncan

96.21%

Native Born

3.79%

Foreign Born

2.25%

Non Citizen

1.53%

Naturalized

Place of Birth

96.21% of Duncan residents were born in the United States, with 64.27% having been born in Oklahoma. 2.25% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Duncan Place of Birth

Note: 2021 and 2022 data is projected
Year Population Growth Annual Growth Rate
19203,4630.00%
19308,3634,9009.22%
19409,2078440.97%
195015,3256,1185.23%
196020,0094,6842.70%
197019,718-291-0.15%
198022,5172,7991.34%
199021,732-785-0.35%
200022,5057730.35%
201023,4399340.41%
201123,431-8-0.03%
201223,302-129-0.55%
201323,341390.17%
201423,123-218-0.93%
201523,12520.01%
201622,815-310-1.34%
201722,477-338-1.48%
201822,361-116-0.52%
201922,344-17-0.08%
202022,327-17-0.08%
202122,310-17-0.08%
202222,293-17-0.08%

Duncan Population by Year