Marion County Historical Age Data
ACS 2010-2014 data
Total population: 28,844
Median Age (
see rank)
| Marion County | 39.70 years old |
| Missouri | 38.10 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Marion County | 39.20 years old |
| Missouri | 36.70 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Marion County | 40.40 years old |
| Missouri | 39.50 years old |
| U.S. | 38.80 years old |
| | Marion County | % of the Total Population | Missouri | U.S. |
| Under 5 years | 1,932 | 6.70%, see rank | 6.29% | 6.36% |
| 5 to 9 years | 1,793 | 6.22%, see rank | 6.50% | 6.51% |
| 10 to 14 years | 1,998 | 6.93%, see rank | 6.55% | 6.59% |
| 15 to 19 years | 1,866 | 6.47%, see rank | 6.78% | 6.85% |
| 20 to 24 years | 1,897 | 6.58%, see rank | 7.04% | 7.13% |
| 25 to 34 years | 3,453 | 11.97%, see rank | 13.15% | 13.47% |
| 35 to 44 years | 3,403 | 11.80%, see rank | 12.20% | 12.96% |
| 45 to 54 years | 3,963 | 13.74%, see rank | 14.18% | 14.09% |
| 55 to 64 years | 3,763 | 13.05%, see rank | 12.67% | 12.29% |
| 65 to 74 years | 2,428 | 8.42%, see rank | 8.07% | 7.64% |
| 75 to 84 | 1,582 | 5.48%, see rank | 4.59% | 4.25% |
| 85 years and over | 766 | 2.66%, see rank | 1.98% | 1.85% |
US Census 2010 data
Total population: 28,781
Median Age (
see rank)
| Marion County | 39.00 years old |
| Missouri | 37.90 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Marion County | 37.90 years old |
| Missouri | 36.50 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Marion County | 40.20 years old |
| Missouri | 39.20 years old |
| U.S. | 38.50 years old |
| | Marion County | % of the Total Population | Missouri | U.S. |
| Under 5 years | 1,977 | 6.87%, see rank | 6.52% | 6.54% |
| 5 to 9 years | 1,942 | 6.75%, see rank | 6.52% | 6.59% |
| 10 to 14 years | 1,916 | 6.66%, see rank | 6.63% | 6.70% |
| 15 to 19 years | 1,856 | 6.45%, see rank | 7.08% | 7.14% |
| 20 to 24 years | 1,869 | 6.49%, see rank | 6.90% | 6.99% |
| 25 to 34 years | 3,516 | 12.22%, see rank | 12.95% | 13.30% |
| 35 to 44 years | 3,408 | 11.84%, see rank | 12.50% | 13.30% |
| 45 to 54 years | 4,169 | 14.49%, see rank | 14.84% | 14.58% |
| 55 to 64 years | 3,621 | 12.58%, see rank | 12.08% | 11.82% |
| 65 to 74 years | 2,170 | 7.54%, see rank | 7.52% | 7.03% |
| 75 to 84 | 1,561 | 5.42%, see rank | 4.58% | 4.23% |
| 85 years and over | 776 | 2.70%, see rank | 1.90% | 1.78% |
ACS 2008-2012 data
Total population: 28,703
Median Age (
see rank)
| Marion County | 39.30 years old |
| Missouri | 37.90 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Marion County | 38.10 years old |
| Missouri | 36.50 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Marion County | 40.70 years old |
| Missouri | 39.20 years old |
| U.S. | 38.50 years old |
| | Marion County | % of the Total Population | Missouri | U.S. |
| Under 5 years | 1,962 | 6.84%, see rank | 6.44% | 6.51% |
| 5 to 9 years | 1,713 | 5.97%, see rank | 6.51% | 6.57% |
| 10 to 14 years | 2,072 | 7.22%, see rank | 6.63% | 6.68% |
| 15 to 19 years | 1,925 | 6.71%, see rank | 7.04% | 7.09% |
| 20 to 24 years | 1,847 | 6.43%, see rank | 6.95% | 7.04% |
| 25 to 34 years | 3,464 | 12.07%, see rank | 12.96% | 13.32% |
| 35 to 44 years | 3,522 | 12.27%, see rank | 12.57% | 13.34% |
| 45 to 54 years | 4,048 | 14.10%, see rank | 14.66% | 14.44% |
| 55 to 64 years | 3,592 | 12.51%, see rank | 12.13% | 11.84% |
| 65 to 74 years | 2,219 | 7.73%, see rank | 7.60% | 7.12% |
| 75 to 84 | 1,535 | 5.35%, see rank | 4.57% | 4.25% |
| 85 years and over | 804 | 2.80%, see rank | 1.93% | 1.78% |
ACS 2006-2010 data
Total population: 28,579
Median Age (
see rank)
| Marion County | 38.60 years old |
| Missouri | 37.60 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Marion County | 38.30 years old |
| Missouri | 36.20 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Marion County | 39.00 years old |
| Missouri | 38.90 years old |
| U.S. | 38.10 years old |
| | Marion County | % of the Total Population | Missouri | U.S. |
| Under 5 years | 1,964 | 6.87%, see rank | 6.53% | 6.62% |
| 5 to 9 years | 1,862 | 6.52%, see rank | 6.51% | 6.62% |
| 10 to 14 years | 1,918 | 6.71%, see rank | 6.77% | 6.79% |
| 15 to 19 years | 1,905 | 6.67%, see rank | 7.26% | 7.28% |
| 20 to 24 years | 1,913 | 6.69%, see rank | 6.96% | 6.98% |
| 25 to 34 years | 3,446 | 12.06%, see rank | 12.74% | 13.22% |
| 35 to 44 years | 3,547 | 12.41%, see rank | 13.15% | 13.89% |
| 45 to 54 years | 4,097 | 14.34%, see rank | 14.84% | 14.57% |
| 55 to 64 years | 3,333 | 11.66%, see rank | 11.52% | 11.28% |
| 65 to 74 years | 2,188 | 7.66%, see rank | 7.25% | 6.74% |
| 75 to 84 | 1,485 | 5.20%, see rank | 4.61% | 4.30% |
| 85 years and over | 921 | 3.22%, see rank | 1.87% | 1.70% |
ACS 2005-2009 data
Total population: 28,241
Median Age (
see rank)
| Marion County | 38.50 years old |
| Missouri | 37.30 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Marion County | 38.00 years old |
| Missouri | 35.90 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Marion County | 39.10 years old |
| Missouri | 38.70 years old |
| U.S. | 37.90 years old |
| | Marion County | % of the Total Population | Missouri | U.S. |
| Under 5 years | 2,002 | 7.09%, see rank | 6.70% | 6.92% |
| 5 to 9 years | 1,933 | 6.84%, see rank | 6.45% | 6.59% |
| 10 to 14 years | 1,954 | 6.92%, see rank | 6.78% | 6.83% |
| 15 to 19 years | 2,011 | 7.12%, see rank | 7.16% | 7.15% |
| 20 to 24 years | 1,816 | 6.43%, see rank | 7.13% | 7.02% |
| 25 to 34 years | 3,288 | 11.64%, see rank | 12.83% | 13.42% |
| 35 to 44 years | 3,555 | 12.59%, see rank | 13.57% | 14.18% |
| 45 to 54 years | 4,018 | 14.23%, see rank | 14.77% | 14.48% |
| 55 to 64 years | 3,152 | 11.16%, see rank | 11.12% | 10.81% |
| 65 to 74 years | 2,032 | 7.20%, see rank | 6.95% | 6.50% |
| 75 to 84 | 1,551 | 5.49%, see rank | 4.67% | 4.40% |
| 85 years and over | 929 | 3.29%, see rank | 1.88% | 1.71% |
US Census 2000 data
Total population: 28,289
Median Age (
see rank)
| Marion County | 37.10 years old |
| Missouri | 36.10 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Marion County | 35.90 years old |
| Missouri | 34.80 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Marion County | 38.40 years old |
| Missouri | 37.40 years old |
| U.S. | 36.50 years old |
| | Marion County | % of the Total Population | Missouri | U.S. |
| Under 5 years | 1,912 | 6.76%, see rank | 6.61% | 6.81% |
| 5 to 9 years | 1,973 | 6.97%, see rank | 7.13% | 7.30% |
| 10 to 14 years | 2,041 | 7.21%, see rank | 7.36% | 7.29% |
| 15 to 19 years | 2,266 | 8.01%, see rank | 7.39% | 7.18% |
| 20 to 24 years | 1,770 | 6.26%, see rank | 6.60% | 6.74% |
| 25 to 34 years | 3,330 | 11.77%, see rank | 13.20% | 14.18% |
| 35 to 44 years | 4,140 | 14.63%, see rank | 15.86% | 16.04% |
| 45 to 54 years | 3,795 | 13.42%, see rank | 13.27% | 13.39% |
| 55 to 64 years | 2,353 | 8.32%, see rank | 9.07% | 8.63% |
| 65 to 74 years | 2,177 | 7.70%, see rank | 7.03% | 6.54% |
| 75 to 84 | 1,722 | 6.09%, see rank | 4.71% | 4.39% |
| 85 years and over | 810 | 2.86%, see rank | 1.76% | 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.
