Clayton County Historical Age Data
ACS 2010-2014 data
Total population: 17,900
Median Age (
see rank)
| Clayton County | 45.40 years old |
| Iowa | 38.00 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Clayton County | 44.00 years old |
| Iowa | 36.70 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Clayton County | 46.60 years old |
| Iowa | 39.40 years old |
| U.S. | 38.80 years old |
| | Clayton County | % of the Total Population | Iowa | U.S. |
| Under 5 years | 1,050 | 5.87%, see rank | 6.39% | 6.36% |
| 5 to 9 years | 1,079 | 6.03%, see rank | 6.62% | 6.51% |
| 10 to 14 years | 1,207 | 6.74%, see rank | 6.58% | 6.59% |
| 15 to 19 years | 1,103 | 6.16%, see rank | 6.96% | 6.85% |
| 20 to 24 years | 846 | 4.73%, see rank | 7.21% | 7.13% |
| 25 to 34 years | 1,674 | 9.35%, see rank | 12.65% | 13.47% |
| 35 to 44 years | 1,931 | 10.79%, see rank | 11.80% | 12.96% |
| 45 to 54 years | 2,683 | 14.99%, see rank | 13.73% | 14.09% |
| 55 to 64 years | 2,747 | 15.35%, see rank | 12.80% | 12.29% |
| 65 to 74 years | 1,785 | 9.97%, see rank | 7.81% | 7.64% |
| 75 to 84 | 1,203 | 6.72%, see rank | 4.98% | 4.25% |
| 85 years and over | 592 | 3.31%, see rank | 2.48% | 1.85% |
US Census 2010 data
Total population: 18,129
Median Age (
see rank)
| Clayton County | 45.00 years old |
| Iowa | 38.10 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Clayton County | 44.10 years old |
| Iowa | 36.60 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Clayton County | 46.00 years old |
| Iowa | 39.50 years old |
| U.S. | 38.50 years old |
| | Clayton County | % of the Total Population | Iowa | U.S. |
| Under 5 years | 1,122 | 6.19%, see rank | 6.63% | 6.54% |
| 5 to 9 years | 1,130 | 6.23%, see rank | 6.59% | 6.59% |
| 10 to 14 years | 1,175 | 6.48%, see rank | 6.59% | 6.70% |
| 15 to 19 years | 1,154 | 6.37%, see rank | 7.12% | 7.14% |
| 20 to 24 years | 785 | 4.33%, see rank | 7.00% | 6.99% |
| 25 to 34 years | 1,724 | 9.51%, see rank | 12.56% | 13.30% |
| 35 to 44 years | 1,964 | 10.83%, see rank | 11.97% | 13.30% |
| 45 to 54 years | 2,978 | 16.43%, see rank | 14.43% | 14.58% |
| 55 to 64 years | 2,593 | 14.30%, see rank | 12.24% | 11.82% |
| 65 to 74 years | 1,675 | 9.24%, see rank | 7.37% | 7.03% |
| 75 to 84 | 1,232 | 6.80%, see rank | 5.04% | 4.23% |
| 85 years and over | 597 | 3.29%, see rank | 2.45% | 1.78% |
ACS 2008-2012 data
Total population: 18,056
Median Age (
see rank)
| Clayton County | 44.70 years old |
| Iowa | 38.00 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Clayton County | 43.60 years old |
| Iowa | 36.60 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Clayton County | 45.60 years old |
| Iowa | 39.40 years old |
| U.S. | 38.50 years old |
| | Clayton County | % of the Total Population | Iowa | U.S. |
| Under 5 years | 1,078 | 5.97%, see rank | 6.53% | 6.51% |
| 5 to 9 years | 1,226 | 6.79%, see rank | 6.58% | 6.57% |
| 10 to 14 years | 1,081 | 5.99%, see rank | 6.60% | 6.68% |
| 15 to 19 years | 1,168 | 6.47%, see rank | 7.14% | 7.09% |
| 20 to 24 years | 813 | 4.50%, see rank | 7.08% | 7.04% |
| 25 to 34 years | 1,711 | 9.48%, see rank | 12.55% | 13.32% |
| 35 to 44 years | 2,013 | 11.15%, see rank | 12.02% | 13.34% |
| 45 to 54 years | 2,886 | 15.98%, see rank | 14.28% | 14.44% |
| 55 to 64 years | 2,573 | 14.25%, see rank | 12.27% | 11.84% |
| 65 to 74 years | 1,711 | 9.48%, see rank | 7.45% | 7.12% |
| 75 to 84 | 1,184 | 6.56%, see rank | 5.08% | 4.25% |
| 85 years and over | 612 | 3.39%, see rank | 2.42% | 1.78% |
ACS 2006-2010 data
Total population: 18,202
Median Age (
see rank)
| Clayton County | 44.00 years old |
| Iowa | 38.00 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Clayton County | 43.20 years old |
| Iowa | 36.60 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Clayton County | 45.30 years old |
| Iowa | 39.30 years old |
| U.S. | 38.10 years old |
| | Clayton County | % of the Total Population | Iowa | U.S. |
| Under 5 years | 1,083 | 5.95%, see rank | 6.56% | 6.62% |
| 5 to 9 years | 1,177 | 6.47%, see rank | 6.57% | 6.62% |
| 10 to 14 years | 1,143 | 6.28%, see rank | 6.64% | 6.79% |
| 15 to 19 years | 1,239 | 6.81%, see rank | 7.28% | 7.28% |
| 20 to 24 years | 848 | 4.66%, see rank | 7.14% | 6.98% |
| 25 to 34 years | 1,685 | 9.26%, see rank | 12.25% | 13.22% |
| 35 to 44 years | 2,122 | 11.66%, see rank | 12.56% | 13.89% |
| 45 to 54 years | 3,048 | 16.75%, see rank | 14.61% | 14.57% |
| 55 to 64 years | 2,399 | 13.18%, see rank | 11.58% | 11.28% |
| 65 to 74 years | 1,661 | 9.13%, see rank | 7.21% | 6.74% |
| 75 to 84 | 1,236 | 6.79%, see rank | 5.24% | 4.30% |
| 85 years and over | 561 | 3.08%, see rank | 2.36% | 1.70% |
ACS 2005-2009 data
Total population: 17,667
Median Age (
see rank)
| Clayton County | 44.50 years old |
| Iowa | 37.90 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Clayton County | 43.40 years old |
| Iowa | 36.50 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Clayton County | 45.80 years old |
| Iowa | 39.30 years old |
| U.S. | 37.90 years old |
| | Clayton County | % of the Total Population | Iowa | U.S. |
| Under 5 years | 1,027 | 5.81%, see rank | 6.61% | 6.92% |
| 5 to 9 years | 1,163 | 6.58%, see rank | 6.38% | 6.59% |
| 10 to 14 years | 1,085 | 6.14%, see rank | 6.59% | 6.83% |
| 15 to 19 years | 1,258 | 7.12%, see rank | 7.37% | 7.15% |
| 20 to 24 years | 879 | 4.98%, see rank | 7.65% | 7.02% |
| 25 to 34 years | 1,326 | 7.51%, see rank | 11.90% | 13.42% |
| 35 to 44 years | 2,228 | 12.61%, see rank | 12.95% | 14.18% |
| 45 to 54 years | 3,003 | 17.00%, see rank | 14.71% | 14.48% |
| 55 to 64 years | 2,316 | 13.11%, see rank | 11.11% | 10.81% |
| 65 to 74 years | 1,600 | 9.06%, see rank | 7.05% | 6.50% |
| 75 to 84 | 1,212 | 6.86%, see rank | 5.30% | 4.40% |
| 85 years and over | 570 | 3.23%, see rank | 2.38% | 1.71% |
US Census 2000 data
Total population: 18,678
Median Age (
see rank)
| Clayton County | 40.20 years old |
| Iowa | 36.60 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Clayton County | 39.20 years old |
| Iowa | 35.20 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Clayton County | 41.40 years old |
| Iowa | 38.00 years old |
| U.S. | 36.50 years old |
| | Clayton County | % of the Total Population | Iowa | U.S. |
| Under 5 years | 1,077 | 5.77%, see rank | 6.44% | 6.81% |
| 5 to 9 years | 1,265 | 6.77%, see rank | 6.92% | 7.30% |
| 10 to 14 years | 1,474 | 7.89%, see rank | 7.19% | 7.29% |
| 15 to 19 years | 1,399 | 7.49%, see rank | 7.74% | 7.18% |
| 20 to 24 years | 731 | 3.91%, see rank | 6.96% | 6.74% |
| 25 to 34 years | 1,976 | 10.58%, see rank | 12.41% | 14.18% |
| 35 to 44 years | 2,886 | 15.45%, see rank | 15.21% | 16.04% |
| 45 to 54 years | 2,565 | 13.73%, see rank | 13.42% | 13.39% |
| 55 to 64 years | 1,843 | 9.87%, see rank | 8.80% | 8.63% |
| 65 to 74 years | 1,710 | 9.16%, see rank | 7.24% | 6.54% |
| 75 to 84 | 1,196 | 6.40%, see rank | 5.44% | 4.39% |
| 85 years and over | 556 | 2.98%, see rank | 2.23% | 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.
