Grundy County Historical Age Data
ACS 2010-2014 data
Total population: 12,403
Median Age (
see rank)
Grundy County | 42.40 years old |
Iowa | 38.00 years old |
U.S. | 37.40 years old |
Median Age, Male (
see rank)
Grundy County | 40.50 years old |
Iowa | 36.70 years old |
U.S. | 36.10 years old |
Median Age, Female (
see rank)
Grundy County | 44.50 years old |
Iowa | 39.40 years old |
U.S. | 38.80 years old |
| Grundy County | % of the Total Population | Iowa | U.S. |
Under 5 years | 793 | 6.39%, see rank | 6.39% | 6.36% |
5 to 9 years | 883 | 7.12%, see rank | 6.62% | 6.51% |
10 to 14 years | 736 | 5.93%, see rank | 6.58% | 6.59% |
15 to 19 years | 816 | 6.58%, see rank | 6.96% | 6.85% |
20 to 24 years | 566 | 4.56%, see rank | 7.21% | 7.13% |
25 to 34 years | 1,290 | 10.40%, see rank | 12.65% | 13.47% |
35 to 44 years | 1,418 | 11.43%, see rank | 11.80% | 12.96% |
45 to 54 years | 1,801 | 14.52%, see rank | 13.73% | 14.09% |
55 to 64 years | 1,701 | 13.71%, see rank | 12.80% | 12.29% |
65 to 74 years | 1,185 | 9.55%, see rank | 7.81% | 7.64% |
75 to 84 | 832 | 6.71%, see rank | 4.98% | 4.25% |
85 years and over | 382 | 3.08%, see rank | 2.48% | 1.85% |
US Census 2010 data
Total population: 12,453
Median Age (
see rank)
Grundy County | 43.00 years old |
Iowa | 38.10 years old |
U.S. | 37.20 years old |
Median Age, Male (
see rank)
Grundy County | 41.00 years old |
Iowa | 36.60 years old |
U.S. | 35.80 years old |
Median Age, Female (
see rank)
Grundy County | 44.80 years old |
Iowa | 39.50 years old |
U.S. | 38.50 years old |
| Grundy County | % of the Total Population | Iowa | U.S. |
Under 5 years | 786 | 6.31%, see rank | 6.63% | 6.54% |
5 to 9 years | 791 | 6.35%, see rank | 6.59% | 6.59% |
10 to 14 years | 819 | 6.58%, see rank | 6.59% | 6.70% |
15 to 19 years | 842 | 6.76%, see rank | 7.12% | 7.14% |
20 to 24 years | 533 | 4.28%, see rank | 7.00% | 6.99% |
25 to 34 years | 1,287 | 10.33%, see rank | 12.56% | 13.30% |
35 to 44 years | 1,467 | 11.78%, see rank | 11.97% | 13.30% |
45 to 54 years | 1,906 | 15.31%, see rank | 14.43% | 14.58% |
55 to 64 years | 1,680 | 13.49%, see rank | 12.24% | 11.82% |
65 to 74 years | 1,116 | 8.96%, see rank | 7.37% | 7.03% |
75 to 84 | 807 | 6.48%, see rank | 5.04% | 4.23% |
85 years and over | 419 | 3.36%, see rank | 2.45% | 1.78% |
ACS 2008-2012 data
Total population: 12,431
Median Age (
see rank)
Grundy County | 42.50 years old |
Iowa | 38.00 years old |
U.S. | 37.20 years old |
Median Age, Male (
see rank)
Grundy County | 41.00 years old |
Iowa | 36.60 years old |
U.S. | 35.80 years old |
Median Age, Female (
see rank)
Grundy County | 44.30 years old |
Iowa | 39.40 years old |
U.S. | 38.50 years old |
| Grundy County | % of the Total Population | Iowa | U.S. |
Under 5 years | 803 | 6.46%, see rank | 6.53% | 6.51% |
5 to 9 years | 860 | 6.92%, see rank | 6.58% | 6.57% |
10 to 14 years | 748 | 6.02%, see rank | 6.60% | 6.68% |
15 to 19 years | 835 | 6.72%, see rank | 7.14% | 7.09% |
20 to 24 years | 540 | 4.34%, see rank | 7.08% | 7.04% |
25 to 34 years | 1,285 | 10.34%, see rank | 12.55% | 13.32% |
35 to 44 years | 1,456 | 11.71%, see rank | 12.02% | 13.34% |
45 to 54 years | 1,891 | 15.21%, see rank | 14.28% | 14.44% |
55 to 64 years | 1,650 | 13.27%, see rank | 12.27% | 11.84% |
65 to 74 years | 1,153 | 9.28%, see rank | 7.45% | 7.12% |
75 to 84 | 822 | 6.61%, see rank | 5.08% | 4.25% |
85 years and over | 388 | 3.12%, see rank | 2.42% | 1.78% |
ACS 2006-2010 data
Total population: 12,401
Median Age (
see rank)
Grundy County | 42.50 years old |
Iowa | 38.00 years old |
U.S. | 36.90 years old |
Median Age, Male (
see rank)
Grundy County | 41.30 years old |
Iowa | 36.60 years old |
U.S. | 35.60 years old |
Median Age, Female (
see rank)
Grundy County | 44.00 years old |
Iowa | 39.30 years old |
U.S. | 38.10 years old |
| Grundy County | % of the Total Population | Iowa | U.S. |
Under 5 years | 734 | 5.92%, see rank | 6.56% | 6.62% |
5 to 9 years | 773 | 6.23%, see rank | 6.57% | 6.62% |
10 to 14 years | 879 | 7.09%, see rank | 6.64% | 6.79% |
15 to 19 years | 855 | 6.89%, see rank | 7.28% | 7.28% |
20 to 24 years | 550 | 4.44%, see rank | 7.14% | 6.98% |
25 to 34 years | 1,251 | 10.09%, see rank | 12.25% | 13.22% |
35 to 44 years | 1,525 | 12.30%, see rank | 12.56% | 13.89% |
45 to 54 years | 1,918 | 15.47%, see rank | 14.61% | 14.57% |
55 to 64 years | 1,566 | 12.63%, see rank | 11.58% | 11.28% |
65 to 74 years | 1,118 | 9.02%, see rank | 7.21% | 6.74% |
75 to 84 | 863 | 6.96%, see rank | 5.24% | 4.30% |
85 years and over | 369 | 2.98%, see rank | 2.36% | 1.70% |
ACS 2005-2009 data
Total population: 12,166
Median Age (
see rank)
Grundy County | 42.80 years old |
Iowa | 37.90 years old |
U.S. | 36.50 years old |
Median Age, Male (
see rank)
Grundy County | 42.00 years old |
Iowa | 36.50 years old |
U.S. | 35.20 years old |
Median Age, Female (
see rank)
Grundy County | 44.20 years old |
Iowa | 39.30 years old |
U.S. | 37.90 years old |
| Grundy County | % of the Total Population | Iowa | U.S. |
Under 5 years | 665 | 5.47%, see rank | 6.61% | 6.92% |
5 to 9 years | 734 | 6.03%, see rank | 6.38% | 6.59% |
10 to 14 years | 795 | 6.53%, see rank | 6.59% | 6.83% |
15 to 19 years | 875 | 7.19%, see rank | 7.37% | 7.15% |
20 to 24 years | 631 | 5.19%, see rank | 7.65% | 7.02% |
25 to 34 years | 1,129 | 9.28%, see rank | 11.90% | 13.42% |
35 to 44 years | 1,600 | 13.15%, see rank | 12.95% | 14.18% |
45 to 54 years | 1,942 | 15.96%, see rank | 14.71% | 14.48% |
55 to 64 years | 1,513 | 12.44%, see rank | 11.11% | 10.81% |
65 to 74 years | 1,093 | 8.98%, see rank | 7.05% | 6.50% |
75 to 84 | 774 | 6.36%, see rank | 5.30% | 4.40% |
85 years and over | 415 | 3.41%, see rank | 2.38% | 1.71% |
US Census 2000 data
Total population: 12,369
Median Age (
see rank)
Grundy County | 40.80 years old |
Iowa | 36.60 years old |
U.S. | 35.30 years old |
Median Age, Male (
see rank)
Grundy County | 39.30 years old |
Iowa | 35.20 years old |
U.S. | 34.00 years old |
Median Age, Female (
see rank)
Grundy County | 42.40 years old |
Iowa | 38.00 years old |
U.S. | 36.50 years old |
| Grundy County | % of the Total Population | Iowa | U.S. |
Under 5 years | 664 | 5.37%, see rank | 6.44% | 6.81% |
5 to 9 years | 848 | 6.86%, see rank | 6.92% | 7.30% |
10 to 14 years | 981 | 7.93%, see rank | 7.19% | 7.29% |
15 to 19 years | 893 | 7.22%, see rank | 7.74% | 7.18% |
20 to 24 years | 512 | 4.14%, see rank | 6.96% | 6.74% |
25 to 34 years | 1,210 | 9.78%, see rank | 12.41% | 14.18% |
35 to 44 years | 1,896 | 15.33%, see rank | 15.21% | 16.04% |
45 to 54 years | 1,690 | 13.66%, see rank | 13.42% | 13.39% |
55 to 64 years | 1,289 | 10.42%, see rank | 8.80% | 8.63% |
65 to 74 years | 1,094 | 8.84%, see rank | 7.24% | 6.54% |
75 to 84 | 899 | 7.27%, see rank | 5.44% | 4.39% |
85 years and over | 393 | 3.18%, 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.