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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Oak Brook. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Oak Brook, Illinois is approximatly 8702.
Racial profile for Oak Brook:
| White : | 6666 |
| Black : | 119 |
| Native American : | 0 |
| Asian : | 1750 |
| Pacific Islander : | 1 |
| Other : | 19 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Oak Brook, Illinois :
| 18 - 19 : | 116 |
| 20 : | 44 |
| 21 : | 42 |
| 22 - 24 : | 117 |
| 25 - 29 : | 129 |
| 30 - 34 : | 98 |
| 35 - 39 : | 146 |
| 40 - 44 : | 213 |
| 45 - 49 : | 322 |
| 50 - 54 : | 438 |
| 55 - 59 : | 432 |
| 60 - 61 : | 130 |
| 62 - 64 : | 198 |
| 65 - 66 : | 106 |
| 67 - 69 : | 151 |
| 70 - 74 : | 273 |
| 75 - 79 : | 184 |
| 80 - 84 : | 99 |
| 85+ : | 66 |
Population by age for females in Oak Brook, Illinois :
| 18 - 19 : | 89 |
| 20 : | 37 |
| 21 : | 34 |
| 22 - 24 : | 123 |
| 25 - 29 : | 122 |
| 30 - 34 : | 132 |
| 35 - 39 : | 195 |
| 40 - 44 : | 294 |
| 45 - 49 : | 401 |
| 50 - 54 : | 478 |
| 55 - 59 : | 442 |
| 60 - 61 : | 153 |
| 62 - 64 : | 170 |
| 65 - 66 : | 108 |
| 67 - 69 : | 169 |
| 70 - 74 : | 252 |
| 75 - 79 : | 209 |
| 80 - 84 : | 140 |
| 85+ : | 144 |
The total amount of households in Oak Brook, Illinois is 3124. With 8562 people of the population in these households. The average household size is 2.74.
7864 people in Oak Brook, Illinois are part of a family. The average family size in Oak Brook is 3.04 people.
There are 1498 married families in Oak Brook, Illinois.
Number of married families by number of members in the family :
| 0 - 2 : | 126 | 3 - 4 : | 111 | 5 : | 56 | 6 - 11 : | 533 | 12 - 17 : | 672 |