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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Johnsburg. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Johnsburg, Illinois is approximatly 5391.
Racial profile for Johnsburg:
| White : | 5328 |
| Black : | 7 |
| Native American : | 3 |
| Asian : | 10 |
| Pacific Islander : | 0 |
| Other : | 9 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Johnsburg, Illinois :
| 18 - 19 : | 79 |
| 20 : | 39 |
| 21 : | 22 |
| 22 - 24 : | 64 |
| 25 - 29 : | 102 |
| 30 - 34 : | 137 |
| 35 - 39 : | 215 |
| 40 - 44 : | 293 |
| 45 - 49 : | 260 |
| 50 - 54 : | 209 |
| 55 - 59 : | 169 |
| 60 - 61 : | 42 |
| 62 - 64 : | 49 |
| 65 - 66 : | 34 |
| 67 - 69 : | 39 |
| 70 - 74 : | 45 |
| 75 - 79 : | 34 |
| 80 - 84 : | 17 |
| 85+ : | 16 |
Population by age for females in Johnsburg, Illinois :
| 18 - 19 : | 70 |
| 20 : | 26 |
| 21 : | 19 |
| 22 - 24 : | 60 |
| 25 - 29 : | 92 |
| 30 - 34 : | 152 |
| 35 - 39 : | 255 |
| 40 - 44 : | 281 |
| 45 - 49 : | 251 |
| 50 - 54 : | 215 |
| 55 - 59 : | 143 |
| 60 - 61 : | 37 |
| 62 - 64 : | 50 |
| 65 - 66 : | 36 |
| 67 - 69 : | 39 |
| 70 - 74 : | 58 |
| 75 - 79 : | 43 |
| 80 - 84 : | 22 |
| 85+ : | 28 |
The total amount of households in Johnsburg, Illinois is 1760. With 5377 people of the population in these households. The average household size is 3.06.
4988 people in Johnsburg, Illinois are part of a family. The average family size in Johnsburg is 3.32 people.
There are 1397 married families in Johnsburg, Illinois.
Number of married families by number of members in the family :
| 0 - 2 : | 137 | 3 - 4 : | 112 | 5 : | 87 | 6 - 11 : | 534 | 12 - 17 : | 527 |