Knox County Historical Age Data
ACS 2010-2014 data
Total population: 39,653
Median Age (
see rank)
| Knox County | 47.10 years old |
| Maine | 43.50 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Knox County | 45.20 years old |
| Maine | 42.40 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Knox County | 48.70 years old |
| Maine | 44.60 years old |
| U.S. | 38.80 years old |
| | Knox County | % of the Total Population | Maine | U.S. |
| Under 5 years | 1,744 | 4.40%, see rank | 4.97% | 6.36% |
| 5 to 9 years | 1,954 | 4.93%, see rank | 5.56% | 6.51% |
| 10 to 14 years | 2,334 | 5.89%, see rank | 5.74% | 6.59% |
| 15 to 19 years | 2,110 | 5.32%, see rank | 6.37% | 6.85% |
| 20 to 24 years | 1,823 | 4.60%, see rank | 6.00% | 7.13% |
| 25 to 34 years | 4,066 | 10.25%, see rank | 11.19% | 13.47% |
| 35 to 44 years | 4,728 | 11.92%, see rank | 12.21% | 12.96% |
| 45 to 54 years | 5,980 | 15.08%, see rank | 15.76% | 14.09% |
| 55 to 64 years | 6,693 | 16.88%, see rank | 15.14% | 12.29% |
| 65 to 74 years | 4,532 | 11.43%, see rank | 9.47% | 7.64% |
| 75 to 84 | 2,439 | 6.15%, see rank | 5.34% | 4.25% |
| 85 years and over | 1,250 | 3.15%, see rank | 2.24% | 1.85% |
US Census 2010 data
Total population: 39,736
Median Age (
see rank)
| Knox County | 46.20 years old |
| Maine | 42.70 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Knox County | 44.50 years old |
| Maine | 41.50 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Knox County | 47.90 years old |
| Maine | 43.80 years old |
| U.S. | 38.50 years old |
| | Knox County | % of the Total Population | Maine | U.S. |
| Under 5 years | 1,921 | 4.83%, see rank | 5.23% | 6.54% |
| 5 to 9 years | 2,097 | 5.28%, see rank | 5.58% | 6.59% |
| 10 to 14 years | 2,297 | 5.78%, see rank | 5.95% | 6.70% |
| 15 to 19 years | 2,135 | 5.37%, see rank | 6.65% | 7.14% |
| 20 to 24 years | 1,763 | 4.44%, see rank | 6.00% | 6.99% |
| 25 to 34 years | 4,025 | 10.13%, see rank | 10.89% | 13.30% |
| 35 to 44 years | 4,949 | 12.45%, see rank | 12.90% | 13.30% |
| 45 to 54 years | 6,421 | 16.16%, see rank | 16.45% | 14.58% |
| 55 to 64 years | 6,534 | 16.44%, see rank | 14.46% | 11.82% |
| 65 to 74 years | 3,983 | 10.02%, see rank | 8.48% | 7.03% |
| 75 to 84 | 2,465 | 6.20%, see rank | 5.22% | 4.23% |
| 85 years and over | 1,146 | 2.88%, see rank | 2.19% | 1.78% |
ACS 2008-2012 data
Total population: 39,848
Median Age (
see rank)
| Knox County | 46.60 years old |
| Maine | 42.80 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Knox County | 44.30 years old |
| Maine | 41.60 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Knox County | 48.30 years old |
| Maine | 43.80 years old |
| U.S. | 38.50 years old |
| | Knox County | % of the Total Population | Maine | U.S. |
| Under 5 years | 1,879 | 4.72%, see rank | 5.17% | 6.51% |
| 5 to 9 years | 1,947 | 4.89%, see rank | 5.61% | 6.57% |
| 10 to 14 years | 2,396 | 6.01%, see rank | 5.94% | 6.68% |
| 15 to 19 years | 2,199 | 5.52%, see rank | 6.66% | 7.09% |
| 20 to 24 years | 1,838 | 4.61%, see rank | 6.01% | 7.04% |
| 25 to 34 years | 3,956 | 9.93%, see rank | 10.92% | 13.32% |
| 35 to 44 years | 4,931 | 12.37%, see rank | 12.90% | 13.34% |
| 45 to 54 years | 6,407 | 16.08%, see rank | 16.30% | 14.44% |
| 55 to 64 years | 6,526 | 16.38%, see rank | 14.46% | 11.84% |
| 65 to 74 years | 4,116 | 10.33%, see rank | 8.61% | 7.12% |
| 75 to 84 | 2,437 | 6.12%, see rank | 5.28% | 4.25% |
| 85 years and over | 1,216 | 3.05%, see rank | 2.16% | 1.78% |
ACS 2006-2010 data
Total population: 40,111
Median Age (
see rank)
| Knox County | 45.70 years old |
| Maine | 42.00 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Knox County | 43.90 years old |
| Maine | 40.80 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Knox County | 47.20 years old |
| Maine | 43.10 years old |
| U.S. | 38.10 years old |
| | Knox County | % of the Total Population | Maine | U.S. |
| Under 5 years | 1,953 | 4.87%, see rank | 5.26% | 6.62% |
| 5 to 9 years | 1,983 | 4.94%, see rank | 5.59% | 6.62% |
| 10 to 14 years | 2,392 | 5.96%, see rank | 6.23% | 6.79% |
| 15 to 19 years | 2,438 | 6.08%, see rank | 6.91% | 7.28% |
| 20 to 24 years | 1,863 | 4.64%, see rank | 6.02% | 6.98% |
| 25 to 34 years | 3,992 | 9.95%, see rank | 10.85% | 13.22% |
| 35 to 44 years | 5,116 | 12.75%, see rank | 13.75% | 13.89% |
| 45 to 54 years | 6,724 | 16.76%, see rank | 16.48% | 14.57% |
| 55 to 64 years | 6,176 | 15.40%, see rank | 13.61% | 11.28% |
| 65 to 74 years | 3,832 | 9.55%, see rank | 7.99% | 6.74% |
| 75 to 84 | 2,642 | 6.59%, see rank | 5.27% | 4.30% |
| 85 years and over | 1,000 | 2.49%, see rank | 2.04% | 1.70% |
ACS 2005-2009 data
Total population: 40,897
Median Age (
see rank)
| Knox County | 44.80 years old |
| Maine | 41.40 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Knox County | 43.40 years old |
| Maine | 40.20 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Knox County | 46.50 years old |
| Maine | 42.50 years old |
| U.S. | 37.90 years old |
| | Knox County | % of the Total Population | Maine | U.S. |
| Under 5 years | 1,988 | 4.86%, see rank | 5.38% | 6.92% |
| 5 to 9 years | 1,950 | 4.77%, see rank | 5.45% | 6.59% |
| 10 to 14 years | 2,328 | 5.69%, see rank | 6.24% | 6.83% |
| 15 to 19 years | 2,582 | 6.31%, see rank | 6.98% | 7.15% |
| 20 to 24 years | 2,236 | 5.47%, see rank | 6.18% | 7.02% |
| 25 to 34 years | 4,084 | 9.99%, see rank | 11.22% | 13.42% |
| 35 to 44 years | 5,391 | 13.18%, see rank | 14.04% | 14.18% |
| 45 to 54 years | 6,985 | 17.08%, see rank | 16.47% | 14.48% |
| 55 to 64 years | 5,983 | 14.63%, see rank | 13.04% | 10.81% |
| 65 to 74 years | 3,690 | 9.02%, see rank | 7.74% | 6.50% |
| 75 to 84 | 2,751 | 6.73%, see rank | 5.22% | 4.40% |
| 85 years and over | 929 | 2.27%, see rank | 2.03% | 1.71% |
US Census 2000 data
Total population: 39,618
Median Age (
see rank)
| Knox County | 41.40 years old |
| Maine | 38.60 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Knox County | 40.00 years old |
| Maine | 37.60 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Knox County | 42.70 years old |
| Maine | 39.60 years old |
| U.S. | 36.50 years old |
| | Knox County | % of the Total Population | Maine | U.S. |
| Under 5 years | 2,082 | 5.26%, see rank | 5.55% | 6.81% |
| 5 to 9 years | 2,383 | 6.01%, see rank | 6.51% | 7.30% |
| 10 to 14 years | 2,762 | 6.97%, see rank | 7.24% | 7.29% |
| 15 to 19 years | 2,437 | 6.15%, see rank | 7.02% | 7.18% |
| 20 to 24 years | 1,691 | 4.27%, see rank | 5.46% | 6.74% |
| 25 to 34 years | 4,655 | 11.75%, see rank | 12.36% | 14.18% |
| 35 to 44 years | 6,210 | 15.67%, see rank | 16.71% | 16.04% |
| 45 to 54 years | 6,404 | 16.16%, see rank | 15.11% | 13.39% |
| 55 to 64 years | 4,162 | 10.51%, see rank | 9.66% | 8.63% |
| 65 to 74 years | 3,377 | 8.52%, see rank | 7.55% | 6.54% |
| 75 to 84 | 2,497 | 6.30%, see rank | 5.01% | 4.39% |
| 85 years and over | 958 | 2.42%, see rank | 1.83% | 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.
