Round Lake, IL Historical Age Data
ACS 2010-2014 data
Total population: 18,399
Median Age (
see rank)
| Round Lake, IL | 32.10 years old |
| Illinois | 37.00 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Round Lake, IL | 31.40 years old |
| Illinois | 35.70 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Round Lake, IL | 32.50 years old |
| Illinois | 38.40 years old |
| U.S. | 38.80 years old |
| | Round Lake, IL | % of the Total Population | Illinois | U.S. |
| Under 5 years | 1,811 | 9.84%, see rank | 6.30% | 6.36% |
| 5 to 9 years | 1,611 | 8.76%, see rank | 6.58% | 6.51% |
| 10 to 14 years | 1,776 | 9.65%, see rank | 6.71% | 6.59% |
| 15 to 19 years | 1,198 | 6.51%, see rank | 6.94% | 6.85% |
| 20 to 24 years | 1,000 | 5.44%, see rank | 6.95% | 7.13% |
| 25 to 34 years | 2,828 | 15.37%, see rank | 13.84% | 13.47% |
| 35 to 44 years | 3,508 | 19.07%, see rank | 13.20% | 12.96% |
| 45 to 54 years | 2,125 | 11.55%, see rank | 14.17% | 14.09% |
| 55 to 64 years | 1,347 | 7.32%, see rank | 12.13% | 12.29% |
| 65 to 74 years | 897 | 4.88%, see rank | 7.18% | 7.64% |
| 75 to 84 | 256 | 1.39%, see rank | 4.10% | 4.25% |
| 85 years and over | 42 | 0.23%, see rank | 1.90% | 1.85% |
US Census 2010 data
Total population: 18,289
Median Age (
see rank)
| Round Lake, IL | 31.50 years old |
| Illinois | 36.60 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Round Lake, IL | 31.20 years old |
| Illinois | 35.20 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Round Lake, IL | 31.90 years old |
| Illinois | 37.90 years old |
| U.S. | 38.50 years old |
| | Round Lake, IL | % of the Total Population | Illinois | U.S. |
| Under 5 years | 1,895 | 10.36%, see rank | 6.51% | 6.54% |
| 5 to 9 years | 1,819 | 9.95%, see rank | 6.70% | 6.59% |
| 10 to 14 years | 1,448 | 7.92%, see rank | 6.85% | 6.70% |
| 15 to 19 years | 1,121 | 6.13%, see rank | 7.19% | 7.14% |
| 20 to 24 years | 899 | 4.92%, see rank | 6.85% | 6.99% |
| 25 to 34 years | 3,266 | 17.86%, see rank | 13.84% | 13.30% |
| 35 to 44 years | 3,454 | 18.89%, see rank | 13.45% | 13.30% |
| 45 to 54 years | 2,180 | 11.92%, see rank | 14.58% | 14.58% |
| 55 to 64 years | 1,323 | 7.23%, see rank | 11.48% | 11.82% |
| 65 to 74 years | 592 | 3.24%, see rank | 6.62% | 7.03% |
| 75 to 84 | 230 | 1.26%, see rank | 4.09% | 4.23% |
| 85 years and over | 62 | 0.34%, see rank | 1.83% | 1.78% |
ACS 2008-2012 data
Total population: 17,773
Median Age (
see rank)
| Round Lake, IL | 31.70 years old |
| Illinois | 36.60 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Round Lake, IL | 31.40 years old |
| Illinois | 35.30 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Round Lake, IL | 32.10 years old |
| Illinois | 38.00 years old |
| U.S. | 38.50 years old |
| | Round Lake, IL | % of the Total Population | Illinois | U.S. |
| Under 5 years | 1,793 | 10.09%, see rank | 6.50% | 6.51% |
| 5 to 9 years | 1,826 | 10.27%, see rank | 6.68% | 6.57% |
| 10 to 14 years | 1,489 | 8.38%, see rank | 6.82% | 6.68% |
| 15 to 19 years | 1,058 | 5.95%, see rank | 7.16% | 7.09% |
| 20 to 24 years | 766 | 4.31%, see rank | 6.88% | 7.04% |
| 25 to 34 years | 3,033 | 17.07%, see rank | 13.84% | 13.32% |
| 35 to 44 years | 3,134 | 17.63%, see rank | 13.49% | 13.34% |
| 45 to 54 years | 2,083 | 11.72%, see rank | 14.46% | 14.44% |
| 55 to 64 years | 1,677 | 9.44%, see rank | 11.52% | 11.84% |
| 65 to 74 years | 593 | 3.34%, see rank | 6.71% | 7.12% |
| 75 to 84 | 309 | 1.74%, see rank | 4.11% | 4.25% |
| 85 years and over | 12 | 0.07%, see rank | 1.83% | 1.78% |
ACS 2006-2010 data
Total population: 16,163
Median Age (
see rank)
| Round Lake, IL | 30.50 years old |
| Illinois | 36.20 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Round Lake, IL | 30.20 years old |
| Illinois | 34.90 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Round Lake, IL | 30.90 years old |
| Illinois | 37.60 years old |
| U.S. | 38.10 years old |
| | Round Lake, IL | % of the Total Population | Illinois | U.S. |
| Under 5 years | 1,705 | 10.55%, see rank | 6.63% | 6.62% |
| 5 to 9 years | 1,572 | 9.73%, see rank | 6.78% | 6.62% |
| 10 to 14 years | 1,307 | 8.09%, see rank | 6.94% | 6.79% |
| 15 to 19 years | 1,098 | 6.79%, see rank | 7.31% | 7.28% |
| 20 to 24 years | 683 | 4.23%, see rank | 6.86% | 6.98% |
| 25 to 34 years | 3,305 | 20.45%, see rank | 13.78% | 13.22% |
| 35 to 44 years | 2,759 | 17.07%, see rank | 13.96% | 13.89% |
| 45 to 54 years | 1,919 | 11.87%, see rank | 14.55% | 14.57% |
| 55 to 64 years | 1,133 | 7.01%, see rank | 10.89% | 11.28% |
| 65 to 74 years | 460 | 2.85%, see rank | 6.36% | 6.74% |
| 75 to 84 | 194 | 1.20%, see rank | 4.17% | 4.30% |
| 85 years and over | 28 | 0.17%, see rank | 1.77% | 1.70% |
ACS 2005-2009 data
Total population: 18,625
Median Age (
see rank)
| Round Lake, IL | 30.20 years old |
| Illinois | 35.90 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Round Lake, IL | 30.20 years old |
| Illinois | 34.60 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Round Lake, IL | 30.10 years old |
| Illinois | 37.20 years old |
| U.S. | 37.90 years old |
| | Round Lake, IL | % of the Total Population | Illinois | U.S. |
| Under 5 years | 2,192 | 11.77%, see rank | 6.97% | 6.92% |
| 5 to 9 years | 1,694 | 9.10%, see rank | 6.76% | 6.59% |
| 10 to 14 years | 1,586 | 8.52%, see rank | 6.96% | 6.83% |
| 15 to 19 years | 1,283 | 6.89%, see rank | 7.24% | 7.15% |
| 20 to 24 years | 909 | 4.88%, see rank | 7.08% | 7.02% |
| 25 to 34 years | 3,440 | 18.47%, see rank | 13.73% | 13.42% |
| 35 to 44 years | 3,252 | 17.46%, see rank | 14.23% | 14.18% |
| 45 to 54 years | 2,253 | 12.10%, see rank | 14.47% | 14.48% |
| 55 to 64 years | 1,295 | 6.95%, see rank | 10.43% | 10.81% |
| 65 to 74 years | 430 | 2.31%, see rank | 6.21% | 6.50% |
| 75 to 84 | 251 | 1.35%, see rank | 4.17% | 4.40% |
| 85 years and over | 40 | 0.21%, see rank | 1.74% | 1.71% |
US Census 2000 data
Total population: 5,842
Median Age (
see rank)
| Round Lake, IL | 30.40 years old |
| Illinois | 34.70 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Round Lake, IL | 30.40 years old |
| Illinois | 33.30 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Round Lake, IL | 30.40 years old |
| Illinois | 36.00 years old |
| U.S. | 36.50 years old |
| | Round Lake, IL | % of the Total Population | Illinois | U.S. |
| Under 5 years | 672 | 11.50%, see rank | 7.06% | 6.81% |
| 5 to 9 years | 492 | 8.42%, see rank | 7.49% | 7.30% |
| 10 to 14 years | 369 | 6.32%, see rank | 7.29% | 7.29% |
| 15 to 19 years | 351 | 6.01%, see rank | 7.20% | 7.18% |
| 20 to 24 years | 374 | 6.40%, see rank | 6.85% | 6.74% |
| 25 to 34 years | 1,293 | 22.13%, see rank | 14.59% | 14.18% |
| 35 to 44 years | 973 | 16.66%, see rank | 15.97% | 16.04% |
| 45 to 54 years | 630 | 10.78%, see rank | 13.10% | 13.39% |
| 55 to 64 years | 343 | 5.87%, see rank | 8.38% | 8.63% |
| 65 to 74 years | 236 | 4.04%, see rank | 6.22% | 6.54% |
| 75 to 84 | 92 | 1.57%, see rank | 4.31% | 4.39% |
| 85 years and over | 17 | 0.29%, see rank | 1.55% | 1.51% |
* ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
