Boone County Historical Age Data
ACS 2010-2014 data
Total population: 54,005
Median Age (
see rank)
| Boone County | 38.10 years old |
| Illinois | 37.00 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Boone County | 37.20 years old |
| Illinois | 35.70 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Boone County | 39.40 years old |
| Illinois | 38.40 years old |
| U.S. | 38.80 years old |
| | Boone County | % of the Total Population | Illinois | U.S. |
| Under 5 years | 3,360 | 6.22%, see rank | 6.30% | 6.36% |
| 5 to 9 years | 4,031 | 7.46%, see rank | 6.58% | 6.51% |
| 10 to 14 years | 4,725 | 8.75%, see rank | 6.71% | 6.59% |
| 15 to 19 years | 4,292 | 7.95%, see rank | 6.94% | 6.85% |
| 20 to 24 years | 3,062 | 5.67%, see rank | 6.95% | 7.13% |
| 25 to 34 years | 5,738 | 10.62%, see rank | 13.84% | 13.47% |
| 35 to 44 years | 7,643 | 14.15%, see rank | 13.20% | 12.96% |
| 45 to 54 years | 7,946 | 14.71%, see rank | 14.17% | 14.09% |
| 55 to 64 years | 6,385 | 11.82%, see rank | 12.13% | 12.29% |
| 65 to 74 years | 4,130 | 7.65%, see rank | 7.18% | 7.64% |
| 75 to 84 | 2,053 | 3.80%, see rank | 4.10% | 4.25% |
| 85 years and over | 640 | 1.19%, see rank | 1.90% | 1.85% |
US Census 2010 data
Total population: 54,165
Median Age (
see rank)
| Boone County | 36.80 years old |
| Illinois | 36.60 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Boone County | 36.00 years old |
| Illinois | 35.20 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Boone County | 37.50 years old |
| Illinois | 37.90 years old |
| U.S. | 38.50 years old |
| | Boone County | % of the Total Population | Illinois | U.S. |
| Under 5 years | 3,716 | 6.86%, see rank | 6.51% | 6.54% |
| 5 to 9 years | 4,409 | 8.14%, see rank | 6.70% | 6.59% |
| 10 to 14 years | 4,694 | 8.67%, see rank | 6.85% | 6.70% |
| 15 to 19 years | 4,382 | 8.09%, see rank | 7.19% | 7.14% |
| 20 to 24 years | 2,772 | 5.12%, see rank | 6.85% | 6.99% |
| 25 to 34 years | 5,863 | 10.82%, see rank | 13.84% | 13.30% |
| 35 to 44 years | 8,048 | 14.86%, see rank | 13.45% | 13.30% |
| 45 to 54 years | 7,987 | 14.75%, see rank | 14.58% | 14.58% |
| 55 to 64 years | 5,930 | 10.95%, see rank | 11.48% | 11.82% |
| 65 to 74 years | 3,788 | 6.99%, see rank | 6.62% | 7.03% |
| 75 to 84 | 1,908 | 3.52%, see rank | 4.09% | 4.23% |
| 85 years and over | 668 | 1.23%, see rank | 1.83% | 1.78% |
ACS 2008-2012 data
Total population: 54,141
Median Age (
see rank)
| Boone County | 36.60 years old |
| Illinois | 36.60 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Boone County | 35.70 years old |
| Illinois | 35.30 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Boone County | 37.40 years old |
| Illinois | 38.00 years old |
| U.S. | 38.50 years old |
| | Boone County | % of the Total Population | Illinois | U.S. |
| Under 5 years | 3,802 | 7.02%, see rank | 6.50% | 6.51% |
| 5 to 9 years | 4,310 | 7.96%, see rank | 6.68% | 6.57% |
| 10 to 14 years | 4,650 | 8.59%, see rank | 6.82% | 6.68% |
| 15 to 19 years | 4,298 | 7.94%, see rank | 7.16% | 7.09% |
| 20 to 24 years | 2,964 | 5.47%, see rank | 6.88% | 7.04% |
| 25 to 34 years | 5,929 | 10.95%, see rank | 13.84% | 13.32% |
| 35 to 44 years | 8,061 | 14.89%, see rank | 13.49% | 13.34% |
| 45 to 54 years | 7,747 | 14.31%, see rank | 14.46% | 14.44% |
| 55 to 64 years | 6,045 | 11.17%, see rank | 11.52% | 11.84% |
| 65 to 74 years | 3,764 | 6.95%, see rank | 6.71% | 7.12% |
| 75 to 84 | 2,020 | 3.73%, see rank | 4.11% | 4.25% |
| 85 years and over | 551 | 1.02%, see rank | 1.83% | 1.78% |
ACS 2006-2010 data
Total population: 53,567
Median Age (
see rank)
| Boone County | 35.80 years old |
| Illinois | 36.20 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Boone County | 35.10 years old |
| Illinois | 34.90 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Boone County | 36.60 years old |
| Illinois | 37.60 years old |
| U.S. | 38.10 years old |
| | Boone County | % of the Total Population | Illinois | U.S. |
| Under 5 years | 3,952 | 7.38%, see rank | 6.63% | 6.62% |
| 5 to 9 years | 4,359 | 8.14%, see rank | 6.78% | 6.62% |
| 10 to 14 years | 4,726 | 8.82%, see rank | 6.94% | 6.79% |
| 15 to 19 years | 4,204 | 7.85%, see rank | 7.31% | 7.28% |
| 20 to 24 years | 2,878 | 5.37%, see rank | 6.86% | 6.98% |
| 25 to 34 years | 5,973 | 11.15%, see rank | 13.78% | 13.22% |
| 35 to 44 years | 8,365 | 15.62%, see rank | 13.96% | 13.89% |
| 45 to 54 years | 7,591 | 14.17%, see rank | 14.55% | 14.57% |
| 55 to 64 years | 5,671 | 10.59%, see rank | 10.89% | 11.28% |
| 65 to 74 years | 3,358 | 6.27%, see rank | 6.36% | 6.74% |
| 75 to 84 | 1,885 | 3.52%, see rank | 4.17% | 4.30% |
| 85 years and over | 605 | 1.13%, see rank | 1.77% | 1.70% |
ACS 2005-2009 data
Total population: 52,400
Median Age (
see rank)
| Boone County | 35.90 years old |
| Illinois | 35.90 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Boone County | 34.80 years old |
| Illinois | 34.60 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Boone County | 36.70 years old |
| Illinois | 37.20 years old |
| U.S. | 37.90 years old |
| | Boone County | % of the Total Population | Illinois | U.S. |
| Under 5 years | 3,881 | 7.41%, see rank | 6.97% | 6.92% |
| 5 to 9 years | 4,371 | 8.34%, see rank | 6.76% | 6.59% |
| 10 to 14 years | 4,631 | 8.84%, see rank | 6.96% | 6.83% |
| 15 to 19 years | 4,049 | 7.73%, see rank | 7.24% | 7.15% |
| 20 to 24 years | 2,848 | 5.44%, see rank | 7.08% | 7.02% |
| 25 to 34 years | 5,759 | 10.99%, see rank | 13.73% | 13.42% |
| 35 to 44 years | 8,285 | 15.81%, see rank | 14.23% | 14.18% |
| 45 to 54 years | 7,473 | 14.26%, see rank | 14.47% | 14.48% |
| 55 to 64 years | 5,564 | 10.62%, see rank | 10.43% | 10.81% |
| 65 to 74 years | 3,047 | 5.81%, see rank | 6.21% | 6.50% |
| 75 to 84 | 1,755 | 3.35%, see rank | 4.17% | 4.40% |
| 85 years and over | 737 | 1.41%, see rank | 1.74% | 1.71% |
US Census 2000 data
Total population: 41,786
Median Age (
see rank)
| Boone County | 34.50 years old |
| Illinois | 34.70 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Boone County | 33.60 years old |
| Illinois | 33.30 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Boone County | 35.30 years old |
| Illinois | 36.00 years old |
| U.S. | 36.50 years old |
| | Boone County | % of the Total Population | Illinois | U.S. |
| Under 5 years | 3,158 | 7.56%, see rank | 7.06% | 6.81% |
| 5 to 9 years | 3,649 | 8.73%, see rank | 7.49% | 7.30% |
| 10 to 14 years | 3,632 | 8.69%, see rank | 7.29% | 7.29% |
| 15 to 19 years | 3,083 | 7.38%, see rank | 7.20% | 7.18% |
| 20 to 24 years | 2,143 | 5.13%, see rank | 6.85% | 6.74% |
| 25 to 34 years | 5,551 | 13.28%, see rank | 14.59% | 14.18% |
| 35 to 44 years | 6,929 | 16.58%, see rank | 15.97% | 16.04% |
| 45 to 54 years | 5,419 | 12.97%, see rank | 13.10% | 13.39% |
| 55 to 64 years | 3,759 | 9.00%, see rank | 8.38% | 8.63% |
| 65 to 74 years | 2,419 | 5.79%, see rank | 6.22% | 6.54% |
| 75 to 84 | 1,533 | 3.67%, see rank | 4.31% | 4.39% |
| 85 years and over | 511 | 1.22%, 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.
