Montgomery County Historical Age Data
ACS 2010-2014 data
Total population: 29,740
Median Age (
see rank)
| Montgomery County | 41.60 years old |
| Illinois | 37.00 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Montgomery County | 39.10 years old |
| Illinois | 35.70 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Montgomery County | 45.20 years old |
| Illinois | 38.40 years old |
| U.S. | 38.80 years old |
| | Montgomery County | % of the Total Population | Illinois | U.S. |
| Under 5 years | 1,561 | 5.25%, see rank | 6.30% | 6.36% |
| 5 to 9 years | 1,662 | 5.59%, see rank | 6.58% | 6.51% |
| 10 to 14 years | 1,735 | 5.83%, see rank | 6.71% | 6.59% |
| 15 to 19 years | 1,800 | 6.05%, see rank | 6.94% | 6.85% |
| 20 to 24 years | 1,773 | 5.96%, see rank | 6.95% | 7.13% |
| 25 to 34 years | 3,827 | 12.87%, see rank | 13.84% | 13.47% |
| 35 to 44 years | 3,821 | 12.85%, see rank | 13.20% | 12.96% |
| 45 to 54 years | 4,221 | 14.19%, see rank | 14.17% | 14.09% |
| 55 to 64 years | 4,054 | 13.63%, see rank | 12.13% | 12.29% |
| 65 to 74 years | 2,595 | 8.73%, see rank | 7.18% | 7.64% |
| 75 to 84 | 1,832 | 6.16%, see rank | 4.10% | 4.25% |
| 85 years and over | 859 | 2.89%, see rank | 1.90% | 1.85% |
US Census 2010 data
Total population: 30,104
Median Age (
see rank)
| Montgomery County | 41.90 years old |
| Illinois | 36.60 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Montgomery County | 39.60 years old |
| Illinois | 35.20 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Montgomery County | 44.70 years old |
| Illinois | 37.90 years old |
| U.S. | 38.50 years old |
| | Montgomery County | % of the Total Population | Illinois | U.S. |
| Under 5 years | 1,703 | 5.66%, see rank | 6.51% | 6.54% |
| 5 to 9 years | 1,705 | 5.66%, see rank | 6.70% | 6.59% |
| 10 to 14 years | 1,782 | 5.92%, see rank | 6.85% | 6.70% |
| 15 to 19 years | 1,920 | 6.38%, see rank | 7.19% | 7.14% |
| 20 to 24 years | 1,708 | 5.67%, see rank | 6.85% | 6.99% |
| 25 to 34 years | 3,667 | 12.18%, see rank | 13.84% | 13.30% |
| 35 to 44 years | 3,878 | 12.88%, see rank | 13.45% | 13.30% |
| 45 to 54 years | 4,732 | 15.72%, see rank | 14.58% | 14.58% |
| 55 to 64 years | 3,810 | 12.66%, see rank | 11.48% | 11.82% |
| 65 to 74 years | 2,488 | 8.26%, see rank | 6.62% | 7.03% |
| 75 to 84 | 1,786 | 5.93%, see rank | 4.09% | 4.23% |
| 85 years and over | 925 | 3.07%, see rank | 1.83% | 1.78% |
ACS 2008-2012 data
Total population: 29,977
Median Age (
see rank)
| Montgomery County | 41.80 years old |
| Illinois | 36.60 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Montgomery County | 39.80 years old |
| Illinois | 35.30 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Montgomery County | 44.80 years old |
| Illinois | 38.00 years old |
| U.S. | 38.50 years old |
| | Montgomery County | % of the Total Population | Illinois | U.S. |
| Under 5 years | 1,630 | 5.44%, see rank | 6.50% | 6.51% |
| 5 to 9 years | 1,684 | 5.62%, see rank | 6.68% | 6.57% |
| 10 to 14 years | 1,736 | 5.79%, see rank | 6.82% | 6.68% |
| 15 to 19 years | 1,965 | 6.56%, see rank | 7.16% | 7.09% |
| 20 to 24 years | 1,724 | 5.75%, see rank | 6.88% | 7.04% |
| 25 to 34 years | 3,636 | 12.13%, see rank | 13.84% | 13.32% |
| 35 to 44 years | 3,949 | 13.17%, see rank | 13.49% | 13.34% |
| 45 to 54 years | 4,603 | 15.36%, see rank | 14.46% | 14.44% |
| 55 to 64 years | 3,823 | 12.75%, see rank | 11.52% | 11.84% |
| 65 to 74 years | 2,506 | 8.36%, see rank | 6.71% | 7.12% |
| 75 to 84 | 1,795 | 5.99%, see rank | 4.11% | 4.25% |
| 85 years and over | 926 | 3.09%, see rank | 1.83% | 1.78% |
ACS 2006-2010 data
Total population: 30,230
Median Age (
see rank)
| Montgomery County | 41.40 years old |
| Illinois | 36.20 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Montgomery County | 39.60 years old |
| Illinois | 34.90 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Montgomery County | 44.30 years old |
| Illinois | 37.60 years old |
| U.S. | 38.10 years old |
| | Montgomery County | % of the Total Population | Illinois | U.S. |
| Under 5 years | 1,632 | 5.40%, see rank | 6.63% | 6.62% |
| 5 to 9 years | 1,650 | 5.46%, see rank | 6.78% | 6.62% |
| 10 to 14 years | 1,848 | 6.11%, see rank | 6.94% | 6.79% |
| 15 to 19 years | 1,957 | 6.47%, see rank | 7.31% | 7.28% |
| 20 to 24 years | 1,813 | 6.00%, see rank | 6.86% | 6.98% |
| 25 to 34 years | 3,645 | 12.06%, see rank | 13.78% | 13.22% |
| 35 to 44 years | 4,169 | 13.79%, see rank | 13.96% | 13.89% |
| 45 to 54 years | 4,753 | 15.72%, see rank | 14.55% | 14.57% |
| 55 to 64 years | 3,579 | 11.84%, see rank | 10.89% | 11.28% |
| 65 to 74 years | 2,446 | 8.09%, see rank | 6.36% | 6.74% |
| 75 to 84 | 1,808 | 5.98%, see rank | 4.17% | 4.30% |
| 85 years and over | 930 | 3.08%, see rank | 1.77% | 1.70% |
ACS 2005-2009 data
Total population: 29,782
Median Age (
see rank)
| Montgomery County | 40.90 years old |
| Illinois | 35.90 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Montgomery County | 38.70 years old |
| Illinois | 34.60 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Montgomery County | 43.80 years old |
| Illinois | 37.20 years old |
| U.S. | 37.90 years old |
| | Montgomery County | % of the Total Population | Illinois | U.S. |
| Under 5 years | 1,577 | 5.30%, see rank | 6.97% | 6.92% |
| 5 to 9 years | 1,665 | 5.59%, see rank | 6.76% | 6.59% |
| 10 to 14 years | 1,805 | 6.06%, see rank | 6.96% | 6.83% |
| 15 to 19 years | 1,967 | 6.60%, see rank | 7.24% | 7.15% |
| 20 to 24 years | 2,022 | 6.79%, see rank | 7.08% | 7.02% |
| 25 to 34 years | 3,498 | 11.75%, see rank | 13.73% | 13.42% |
| 35 to 44 years | 4,261 | 14.31%, see rank | 14.23% | 14.18% |
| 45 to 54 years | 4,566 | 15.33%, see rank | 14.47% | 14.48% |
| 55 to 64 years | 3,320 | 11.15%, see rank | 10.43% | 10.81% |
| 65 to 74 years | 2,353 | 7.90%, see rank | 6.21% | 6.50% |
| 75 to 84 | 1,775 | 5.96%, see rank | 4.17% | 4.40% |
| 85 years and over | 973 | 3.27%, see rank | 1.74% | 1.71% |
US Census 2000 data
Total population: 30,652
Median Age (
see rank)
| Montgomery County | 38.10 years old |
| Illinois | 34.70 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Montgomery County | 36.10 years old |
| Illinois | 33.30 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Montgomery County | 40.30 years old |
| Illinois | 36.00 years old |
| U.S. | 36.50 years old |
| | Montgomery County | % of the Total Population | Illinois | U.S. |
| Under 5 years | 1,763 | 5.75%, see rank | 7.06% | 6.81% |
| 5 to 9 years | 1,999 | 6.52%, see rank | 7.49% | 7.30% |
| 10 to 14 years | 2,146 | 7.00%, see rank | 7.29% | 7.29% |
| 15 to 19 years | 2,163 | 7.06%, see rank | 7.20% | 7.18% |
| 20 to 24 years | 1,745 | 5.69%, see rank | 6.85% | 6.74% |
| 25 to 34 years | 4,093 | 13.35%, see rank | 14.59% | 14.18% |
| 35 to 44 years | 4,890 | 15.95%, see rank | 15.97% | 16.04% |
| 45 to 54 years | 3,915 | 12.77%, see rank | 13.10% | 13.39% |
| 55 to 64 years | 2,723 | 8.88%, see rank | 8.38% | 8.63% |
| 65 to 74 years | 2,461 | 8.03%, see rank | 6.22% | 6.54% |
| 75 to 84 | 1,928 | 6.29%, see rank | 4.31% | 4.39% |
| 85 years and over | 826 | 2.69%, 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.
