Polk County Historical Age Data
ACS 2010-2014 data
Total population: 31,122
Median Age (
see rank)
| Polk County | 38.10 years old |
| Missouri | 38.10 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Polk County | 36.40 years old |
| Missouri | 36.70 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Polk County | 39.30 years old |
| Missouri | 39.50 years old |
| U.S. | 38.80 years old |
| | Polk County | % of the Total Population | Missouri | U.S. |
| Under 5 years | 1,929 | 6.20%, see rank | 6.29% | 6.36% |
| 5 to 9 years | 2,145 | 6.89%, see rank | 6.50% | 6.51% |
| 10 to 14 years | 2,012 | 6.46%, see rank | 6.55% | 6.59% |
| 15 to 19 years | 2,628 | 8.44%, see rank | 6.78% | 6.85% |
| 20 to 24 years | 2,550 | 8.19%, see rank | 7.04% | 7.13% |
| 25 to 34 years | 3,391 | 10.90%, see rank | 13.15% | 13.47% |
| 35 to 44 years | 3,409 | 10.95%, see rank | 12.20% | 12.96% |
| 45 to 54 years | 4,181 | 13.43%, see rank | 14.18% | 14.09% |
| 55 to 64 years | 3,689 | 11.85%, see rank | 12.67% | 12.29% |
| 65 to 74 years | 2,794 | 8.98%, see rank | 8.07% | 7.64% |
| 75 to 84 | 1,572 | 5.05%, see rank | 4.59% | 4.25% |
| 85 years and over | 822 | 2.64%, see rank | 1.98% | 1.85% |
US Census 2010 data
Total population: 31,137
Median Age (
see rank)
| Polk County | 37.80 years old |
| Missouri | 37.90 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Polk County | 36.10 years old |
| Missouri | 36.50 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Polk County | 39.30 years old |
| Missouri | 39.20 years old |
| U.S. | 38.50 years old |
| | Polk County | % of the Total Population | Missouri | U.S. |
| Under 5 years | 1,995 | 6.41%, see rank | 6.52% | 6.54% |
| 5 to 9 years | 2,059 | 6.61%, see rank | 6.52% | 6.59% |
| 10 to 14 years | 2,185 | 7.02%, see rank | 6.63% | 6.70% |
| 15 to 19 years | 2,647 | 8.50%, see rank | 7.08% | 7.14% |
| 20 to 24 years | 2,391 | 7.68%, see rank | 6.90% | 6.99% |
| 25 to 34 years | 3,334 | 10.71%, see rank | 12.95% | 13.30% |
| 35 to 44 years | 3,569 | 11.46%, see rank | 12.50% | 13.30% |
| 45 to 54 years | 4,386 | 14.09%, see rank | 14.84% | 14.58% |
| 55 to 64 years | 3,546 | 11.39%, see rank | 12.08% | 11.82% |
| 65 to 74 years | 2,655 | 8.53%, see rank | 7.52% | 7.03% |
| 75 to 84 | 1,697 | 5.45%, see rank | 4.58% | 4.23% |
| 85 years and over | 673 | 2.16%, see rank | 1.90% | 1.78% |
ACS 2008-2012 data
Total population: 31,035
Median Age (
see rank)
| Polk County | 38.10 years old |
| Missouri | 37.90 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Polk County | 36.40 years old |
| Missouri | 36.50 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Polk County | 39.60 years old |
| Missouri | 39.20 years old |
| U.S. | 38.50 years old |
| | Polk County | % of the Total Population | Missouri | U.S. |
| Under 5 years | 1,958 | 6.31%, see rank | 6.44% | 6.51% |
| 5 to 9 years | 2,317 | 7.47%, see rank | 6.51% | 6.57% |
| 10 to 14 years | 1,904 | 6.14%, see rank | 6.63% | 6.68% |
| 15 to 19 years | 2,588 | 8.34%, see rank | 7.04% | 7.09% |
| 20 to 24 years | 2,401 | 7.74%, see rank | 6.95% | 7.04% |
| 25 to 34 years | 3,308 | 10.66%, see rank | 12.96% | 13.32% |
| 35 to 44 years | 3,573 | 11.51%, see rank | 12.57% | 13.34% |
| 45 to 54 years | 4,271 | 13.76%, see rank | 14.66% | 14.44% |
| 55 to 64 years | 3,584 | 11.55%, see rank | 12.13% | 11.84% |
| 65 to 74 years | 2,715 | 8.75%, see rank | 7.60% | 7.12% |
| 75 to 84 | 1,633 | 5.26%, see rank | 4.57% | 4.25% |
| 85 years and over | 783 | 2.52%, see rank | 1.93% | 1.78% |
ACS 2006-2010 data
Total population: 30,729
Median Age (
see rank)
| Polk County | 37.70 years old |
| Missouri | 37.60 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Polk County | 36.40 years old |
| Missouri | 36.20 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Polk County | 39.30 years old |
| Missouri | 38.90 years old |
| U.S. | 38.10 years old |
| | Polk County | % of the Total Population | Missouri | U.S. |
| Under 5 years | 1,943 | 6.32%, see rank | 6.53% | 6.62% |
| 5 to 9 years | 2,011 | 6.54%, see rank | 6.51% | 6.62% |
| 10 to 14 years | 2,226 | 7.24%, see rank | 6.77% | 6.79% |
| 15 to 19 years | 2,740 | 8.92%, see rank | 7.26% | 7.28% |
| 20 to 24 years | 2,239 | 7.29%, see rank | 6.96% | 6.98% |
| 25 to 34 years | 3,249 | 10.57%, see rank | 12.74% | 13.22% |
| 35 to 44 years | 3,705 | 12.06%, see rank | 13.15% | 13.89% |
| 45 to 54 years | 4,265 | 13.88%, see rank | 14.84% | 14.57% |
| 55 to 64 years | 3,436 | 11.18%, see rank | 11.52% | 11.28% |
| 65 to 74 years | 2,543 | 8.28%, see rank | 7.25% | 6.74% |
| 75 to 84 | 1,609 | 5.24%, see rank | 4.61% | 4.30% |
| 85 years and over | 763 | 2.48%, see rank | 1.87% | 1.70% |
ACS 2005-2009 data
Total population: 29,983
Median Age (
see rank)
| Polk County | 36.10 years old |
| Missouri | 37.30 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Polk County | 33.70 years old |
| Missouri | 35.90 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Polk County | 37.00 years old |
| Missouri | 38.70 years old |
| U.S. | 37.90 years old |
| | Polk County | % of the Total Population | Missouri | U.S. |
| Under 5 years | 1,999 | 6.67%, see rank | 6.70% | 6.92% |
| 5 to 9 years | 1,859 | 6.20%, see rank | 6.45% | 6.59% |
| 10 to 14 years | 2,250 | 7.50%, see rank | 6.78% | 6.83% |
| 15 to 19 years | 2,594 | 8.65%, see rank | 7.16% | 7.15% |
| 20 to 24 years | 2,109 | 7.03%, see rank | 7.13% | 7.02% |
| 25 to 34 years | 3,888 | 12.97%, see rank | 12.83% | 13.42% |
| 35 to 44 years | 3,580 | 11.94%, see rank | 13.57% | 14.18% |
| 45 to 54 years | 3,818 | 12.73%, see rank | 14.77% | 14.48% |
| 55 to 64 years | 3,153 | 10.52%, see rank | 11.12% | 10.81% |
| 65 to 74 years | 2,328 | 7.76%, see rank | 6.95% | 6.50% |
| 75 to 84 | 1,688 | 5.63%, see rank | 4.67% | 4.40% |
| 85 years and over | 717 | 2.39%, see rank | 1.88% | 1.71% |
US Census 2000 data
Total population: 26,992
Median Age (
see rank)
| Polk County | 35.00 years old |
| Missouri | 36.10 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Polk County | 33.80 years old |
| Missouri | 34.80 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Polk County | 36.00 years old |
| Missouri | 37.40 years old |
| U.S. | 36.50 years old |
| | Polk County | % of the Total Population | Missouri | U.S. |
| Under 5 years | 1,825 | 6.76%, see rank | 6.61% | 6.81% |
| 5 to 9 years | 1,904 | 7.05%, see rank | 7.13% | 7.30% |
| 10 to 14 years | 1,982 | 7.34%, see rank | 7.36% | 7.29% |
| 15 to 19 years | 2,381 | 8.82%, see rank | 7.39% | 7.18% |
| 20 to 24 years | 2,266 | 8.40%, see rank | 6.60% | 6.74% |
| 25 to 34 years | 3,138 | 11.63%, see rank | 13.20% | 14.18% |
| 35 to 44 years | 3,750 | 13.89%, see rank | 15.86% | 16.04% |
| 45 to 54 years | 3,136 | 11.62%, see rank | 13.27% | 13.39% |
| 55 to 64 years | 2,485 | 9.21%, see rank | 9.07% | 8.63% |
| 65 to 74 years | 2,146 | 7.95%, see rank | 7.03% | 6.54% |
| 75 to 84 | 1,461 | 5.41%, see rank | 4.71% | 4.39% |
| 85 years and over | 518 | 1.92%, 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.
