Demographic Characteristics of Duncan, Oklahoma
Total Population: 22,505
Duncan, Oklahoma Age/Gender Statistics
 Male Population: 10,647 (47.31%) |
 Female Population: 11,858 (52.69%) |
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| Under 5 years | 1,494 | 45 to 54 years: | 2,968 |
| 5 to 9 years: | 1,433 | 55 to 59 years: | 1,123 |
| 10 to 14 years: | 1,545 | 60 to 64 years: | 1,001 |
| 15 to 19 years: | 1,519 | 65 to 74 years: | 2,291 |
| 20 to 24 years: | 1,296 | 75 to 84 years: | 1,634 |
| 25 to 34 years: | 2,401 | 85 years and over: | 616 |
| 35 to 44 years: | 3,184 | ||
| Median Age: 40.3 | |||
Duncan, Oklahoma Racial Statistics
One Race
21,913
White
19,462
Black or African American
915
American Indian and Alaska Native
889
Asian
106
Asian Indian
23
Chinese
13
Filipino
18
Japanese
3
Korean
11
Vietnamese
22
Other Asian
16
Native Hawaiian and Other Pacific Islander
10
Native Hawaiian
1
Guamanian or Chamorro
5
Samoan
0
Other Pacific Islander
4
Some other race
531
Two or more races
592
Duncan, Oklahoma Hispanic Population Statistics
| Total Hispanic or Latino Population: 1,349 | |||
| Mexican | Puerto Rican | Cuban | Other |
| 1,095 | 28 | 8 | 218 |
Duncan, Oklahoma Relationship Statistics
| In households: 22,087 (98.14%) | In group quarters: 418 (1.86%) | ||
| Householder | 9,406 | Institutionalized | 347 |
| Spouse | 5,138 | Noninstitutionalized | 71 |
| Child | 5,990 | ||
| Own child under 18 years | 4,841 | ||
| Other relatives | 924 | ||
| Under 18 years | 464 | ||
| Nonrelatives | 629 | ||
| Unmarried partner | 264 | ||