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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Duncan. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Duncan, Oklahoma is approximatly 22505.
Racial profile for Duncan:
| White : | 19462 |
| Black : | 915 |
| Native American : | 889 |
| Asian : | 106 |
| Pacific Islander : | 10 |
| Other : | 531 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Duncan, Oklahoma :
| 18 - 19 : | 285 |
| 20 : | 114 |
| 21 : | 117 |
| 22 - 24 : | 380 |
| 25 - 29 : | 647 |
| 30 - 34 : | 584 |
| 35 - 39 : | 705 |
| 40 - 44 : | 835 |
| 45 - 49 : | 739 |
| 50 - 54 : | 643 |
| 55 - 59 : | 548 |
| 60 - 61 : | 177 |
| 62 - 64 : | 257 |
| 65 - 66 : | 191 |
| 67 - 69 : | 332 |
| 70 - 74 : | 482 |
| 75 - 79 : | 402 |
| 80 - 84 : | 258 |
| 85+ : | 166 |
Population by age for females in Duncan, Oklahoma :
| 18 - 19 : | 282 |
| 20 : | 155 |
| 21 : | 127 |
| 22 - 24 : | 403 |
| 25 - 29 : | 575 |
| 30 - 34 : | 595 |
| 35 - 39 : | 763 |
| 40 - 44 : | 881 |
| 45 - 49 : | 838 |
| 50 - 54 : | 748 |
| 55 - 59 : | 575 |
| 60 - 61 : | 196 |
| 62 - 64 : | 371 |
| 65 - 66 : | 244 |
| 67 - 69 : | 413 |
| 70 - 74 : | 629 |
| 75 - 79 : | 582 |
| 80 - 84 : | 392 |
| 85+ : | 450 |
The total amount of households in Duncan, Oklahoma is 9406. With 22087 people of the population in these households. The average household size is 2.35.
18472 people in Duncan, Oklahoma are part of a family. The average family size in Duncan is 2.88 people.
There are 3627 married families in Duncan, Oklahoma.
Number of married families by number of members in the family :
| 0 - 2 : | 596 | 3 - 4 : | 399 | 5 : | 208 | 6 - 11 : | 1177 | 12 - 17 : | 1247 |