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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Rock Falls. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Rock Falls, Illinois is approximatly 9580.
Racial profile for Rock Falls:
| White : | 8793 |
| Black : | 84 |
| Native American : | 43 |
| Asian : | 25 |
| Pacific Islander : | 0 |
| Other : | 451 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Rock Falls, Illinois :
| 18 - 19 : | 123 |
| 20 : | 67 |
| 21 : | 51 |
| 22 - 24 : | 169 |
| 25 - 29 : | 341 |
| 30 - 34 : | 332 |
| 35 - 39 : | 345 |
| 40 - 44 : | 307 |
| 45 - 49 : | 314 |
| 50 - 54 : | 269 |
| 55 - 59 : | 224 |
| 60 - 61 : | 77 |
| 62 - 64 : | 113 |
| 65 - 66 : | 66 |
| 67 - 69 : | 99 |
| 70 - 74 : | 175 |
| 75 - 79 : | 115 |
| 80 - 84 : | 95 |
| 85+ : | 47 |
Population by age for females in Rock Falls, Illinois :
| 18 - 19 : | 128 |
| 20 : | 69 |
| 21 : | 62 |
| 22 - 24 : | 194 |
| 25 - 29 : | 333 |
| 30 - 34 : | 332 |
| 35 - 39 : | 338 |
| 40 - 44 : | 319 |
| 45 - 49 : | 341 |
| 50 - 54 : | 310 |
| 55 - 59 : | 241 |
| 60 - 61 : | 99 |
| 62 - 64 : | 111 |
| 65 - 66 : | 91 |
| 67 - 69 : | 119 |
| 70 - 74 : | 241 |
| 75 - 79 : | 220 |
| 80 - 84 : | 144 |
| 85+ : | 113 |
The total amount of households in Rock Falls, Illinois is 3895. With 9474 people of the population in these households. The average household size is 2.43.
7662 people in Rock Falls, Illinois are part of a family. The average family size in Rock Falls is 2.99 people.
There are 1390 married families in Rock Falls, Illinois.
Number of married families by number of members in the family :
| 0 - 2 : | 203 | 3 - 4 : | 150 | 5 : | 74 | 6 - 11 : | 506 | 12 - 17 : | 457 |