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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Dekalb. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Dekalb, Illinois is approximatly 39018.
Racial profile for Dekalb:
| White : | 31015 |
| Black : | 3543 |
| Native American : | 94 |
| Asian : | 1804 |
| Pacific Islander : | 49 |
| Other : | 1696 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Dekalb, Illinois :
| 18 - 19 : | 2063 |
| 20 : | 1430 |
| 21 : | 1402 |
| 22 - 24 : | 2598 |
| 25 - 29 : | 1818 |
| 30 - 34 : | 1200 |
| 35 - 39 : | 965 |
| 40 - 44 : | 909 |
| 45 - 49 : | 827 |
| 50 - 54 : | 650 |
| 55 - 59 : | 462 |
| 60 - 61 : | 142 |
| 62 - 64 : | 214 |
| 65 - 66 : | 143 |
| 67 - 69 : | 192 |
| 70 - 74 : | 309 |
| 75 - 79 : | 254 |
| 80 - 84 : | 168 |
| 85+ : | 137 |
Population by age for females in Dekalb, Illinois :
| 18 - 19 : | 2515 |
| 20 : | 1646 |
| 21 : | 1427 |
| 22 - 24 : | 2211 |
| 25 - 29 : | 1415 |
| 30 - 34 : | 1030 |
| 35 - 39 : | 1011 |
| 40 - 44 : | 919 |
| 45 - 49 : | 845 |
| 50 - 54 : | 654 |
| 55 - 59 : | 492 |
| 60 - 61 : | 167 |
| 62 - 64 : | 244 |
| 65 - 66 : | 163 |
| 67 - 69 : | 238 |
| 70 - 74 : | 419 |
| 75 - 79 : | 418 |
| 80 - 84 : | 316 |
| 85+ : | 393 |
The total amount of households in Dekalb, Illinois is 13081. With 31644 people of the population in these households. The average household size is 2.42.
19820 people in Dekalb, Illinois are part of a family. The average family size in Dekalb is 3.02 people.
There are 4399 married families in Dekalb, Illinois.
Number of married families by number of members in the family :
| 0 - 2 : | 836 | 3 - 4 : | 535 | 5 : | 272 | 6 - 11 : | 1466 | 12 - 17 : | 1290 |