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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Round Lake. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Round Lake, Illinois is approximatly 5842.
Racial profile for Round Lake:
| White : | 4782 |
| Black : | 116 |
| Native American : | 23 |
| Asian : | 112 |
| Pacific Islander : | 2 |
| Other : | 630 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Round Lake, Illinois :
| 18 - 19 : | 68 |
| 20 : | 46 |
| 21 : | 42 |
| 22 - 24 : | 120 |
| 25 - 29 : | 268 |
| 30 - 34 : | 375 |
| 35 - 39 : | 292 |
| 40 - 44 : | 210 |
| 45 - 49 : | 182 |
| 50 - 54 : | 139 |
| 55 - 59 : | 107 |
| 60 - 61 : | 33 |
| 62 - 64 : | 36 |
| 65 - 66 : | 19 |
| 67 - 69 : | 22 |
| 70 - 74 : | 51 |
| 75 - 79 : | 22 |
| 80 - 84 : | 13 |
| 85+ : | 5 |
Population by age for females in Round Lake, Illinois :
| 18 - 19 : | 78 |
| 20 : | 29 |
| 21 : | 24 |
| 22 - 24 : | 113 |
| 25 - 29 : | 332 |
| 30 - 34 : | 318 |
| 35 - 39 : | 257 |
| 40 - 44 : | 214 |
| 45 - 49 : | 159 |
| 50 - 54 : | 150 |
| 55 - 59 : | 97 |
| 60 - 61 : | 28 |
| 62 - 64 : | 42 |
| 65 - 66 : | 34 |
| 67 - 69 : | 47 |
| 70 - 74 : | 63 |
| 75 - 79 : | 36 |
| 80 - 84 : | 21 |
| 85+ : | 12 |
The total amount of households in Round Lake, Illinois is 2029. With 5839 people of the population in these households. The average household size is 2.88.
5051 people in Round Lake, Illinois are part of a family. The average family size in Round Lake is 3.28 people.
There are 1240 married families in Round Lake, Illinois.
Number of married families by number of members in the family :
| 0 - 2 : | 336 | 3 - 4 : | 172 | 5 : | 84 | 6 - 11 : | 382 | 12 - 17 : | 266 |