Rock County Historical Age Data
ACS 2010-2014 data
Total population: 9,587
Median Age (
see rank)
Rock County | 41.60 years old |
Minnesota | 37.60 years old |
U.S. | 37.40 years old |
Median Age, Male (
see rank)
Rock County | 40.60 years old |
Minnesota | 36.60 years old |
U.S. | 36.10 years old |
Median Age, Female (
see rank)
Rock County | 42.60 years old |
Minnesota | 38.80 years old |
U.S. | 38.80 years old |
| Rock County | % of the Total Population | Minnesota | U.S. |
Under 5 years | 598 | 6.24%, see rank | 6.50% | 6.36% |
5 to 9 years | 668 | 6.97%, see rank | 6.66% | 6.51% |
10 to 14 years | 727 | 7.58%, see rank | 6.61% | 6.59% |
15 to 19 years | 640 | 6.68%, see rank | 6.74% | 6.85% |
20 to 24 years | 392 | 4.09%, see rank | 6.63% | 7.13% |
25 to 34 years | 1,016 | 10.60%, see rank | 13.65% | 13.47% |
35 to 44 years | 1,066 | 11.12%, see rank | 12.47% | 12.96% |
45 to 54 years | 1,290 | 13.46%, see rank | 14.59% | 14.09% |
55 to 64 years | 1,299 | 13.55%, see rank | 12.58% | 12.29% |
65 to 74 years | 868 | 9.05%, see rank | 7.28% | 7.64% |
75 to 84 | 687 | 7.17%, see rank | 4.26% | 4.25% |
85 years and over | 336 | 3.50%, see rank | 2.02% | 1.85% |
US Census 2010 data
Total population: 9,687
Median Age (
see rank)
Rock County | 41.40 years old |
Minnesota | 37.40 years old |
U.S. | 37.20 years old |
Median Age, Male (
see rank)
Rock County | 39.80 years old |
Minnesota | 36.30 years old |
U.S. | 35.80 years old |
Median Age, Female (
see rank)
Rock County | 43.20 years old |
Minnesota | 38.40 years old |
U.S. | 38.50 years old |
| Rock County | % of the Total Population | Minnesota | U.S. |
Under 5 years | 683 | 7.05%, see rank | 6.70% | 6.54% |
5 to 9 years | 713 | 7.36%, see rank | 6.70% | 6.59% |
10 to 14 years | 673 | 6.95%, see rank | 6.64% | 6.70% |
15 to 19 years | 641 | 6.62%, see rank | 6.94% | 7.14% |
20 to 24 years | 389 | 4.02%, see rank | 6.71% | 6.99% |
25 to 34 years | 1,053 | 10.87%, see rank | 13.49% | 13.30% |
35 to 44 years | 1,063 | 10.97%, see rank | 12.84% | 13.30% |
45 to 54 years | 1,386 | 14.31%, see rank | 15.23% | 14.58% |
55 to 64 years | 1,251 | 12.91%, see rank | 11.87% | 11.82% |
65 to 74 years | 797 | 8.23%, see rank | 6.68% | 7.03% |
75 to 84 | 656 | 6.77%, see rank | 4.19% | 4.23% |
85 years and over | 382 | 3.94%, see rank | 2.01% | 1.78% |
ACS 2008-2012 data
Total population: 9,620
Median Age (
see rank)
Rock County | 41.40 years old |
Minnesota | 37.40 years old |
U.S. | 37.20 years old |
Median Age, Male (
see rank)
Rock County | 40.20 years old |
Minnesota | 36.20 years old |
U.S. | 35.80 years old |
Median Age, Female (
see rank)
Rock County | 43.40 years old |
Minnesota | 38.50 years old |
U.S. | 38.50 years old |
| Rock County | % of the Total Population | Minnesota | U.S. |
Under 5 years | 646 | 6.72%, see rank | 6.63% | 6.51% |
5 to 9 years | 720 | 7.48%, see rank | 6.68% | 6.57% |
10 to 14 years | 654 | 6.80%, see rank | 6.65% | 6.68% |
15 to 19 years | 633 | 6.58%, see rank | 6.96% | 7.09% |
20 to 24 years | 404 | 4.20%, see rank | 6.72% | 7.04% |
25 to 34 years | 1,035 | 10.76%, see rank | 13.51% | 13.32% |
35 to 44 years | 1,024 | 10.64%, see rank | 12.89% | 13.34% |
45 to 54 years | 1,395 | 14.50%, see rank | 15.09% | 14.44% |
55 to 64 years | 1,272 | 13.22%, see rank | 11.90% | 11.84% |
65 to 74 years | 795 | 8.26%, see rank | 6.76% | 7.12% |
75 to 84 | 669 | 6.95%, see rank | 4.25% | 4.25% |
85 years and over | 373 | 3.88%, see rank | 1.97% | 1.78% |
ACS 2006-2010 data
Total population: 9,606
Median Age (
see rank)
Rock County | 40.50 years old |
Minnesota | 37.10 years old |
U.S. | 36.90 years old |
Median Age, Male (
see rank)
Rock County | 38.70 years old |
Minnesota | 36.00 years old |
U.S. | 35.60 years old |
Median Age, Female (
see rank)
Rock County | 42.50 years old |
Minnesota | 38.10 years old |
U.S. | 38.10 years old |
| Rock County | % of the Total Population | Minnesota | U.S. |
Under 5 years | 657 | 6.84%, see rank | 6.73% | 6.62% |
5 to 9 years | 687 | 7.15%, see rank | 6.60% | 6.62% |
10 to 14 years | 698 | 7.27%, see rank | 6.82% | 6.79% |
15 to 19 years | 645 | 6.71%, see rank | 7.15% | 7.28% |
20 to 24 years | 448 | 4.66%, see rank | 6.86% | 6.98% |
25 to 34 years | 1,020 | 10.62%, see rank | 13.21% | 13.22% |
35 to 44 years | 1,062 | 11.06%, see rank | 13.62% | 13.89% |
45 to 54 years | 1,376 | 14.32%, see rank | 15.28% | 14.57% |
55 to 64 years | 1,202 | 12.51%, see rank | 11.17% | 11.28% |
65 to 74 years | 760 | 7.91%, see rank | 6.37% | 6.74% |
75 to 84 | 652 | 6.79%, see rank | 4.29% | 4.30% |
85 years and over | 399 | 4.15%, see rank | 1.90% | 1.70% |
ACS 2005-2009 data
Total population: 9,444
Median Age (
see rank)
Rock County | 42.00 years old |
Minnesota | 37.00 years old |
U.S. | 36.50 years old |
Median Age, Male (
see rank)
Rock County | 40.20 years old |
Minnesota | 35.90 years old |
U.S. | 35.20 years old |
Median Age, Female (
see rank)
Rock County | 43.90 years old |
Minnesota | 38.00 years old |
U.S. | 37.90 years old |
| Rock County | % of the Total Population | Minnesota | U.S. |
Under 5 years | 678 | 7.18%, see rank | 6.87% | 6.92% |
5 to 9 years | 652 | 6.90%, see rank | 6.45% | 6.59% |
10 to 14 years | 635 | 6.72%, see rank | 6.73% | 6.83% |
15 to 19 years | 630 | 6.67%, see rank | 7.21% | 7.15% |
20 to 24 years | 537 | 5.69%, see rank | 7.16% | 7.02% |
25 to 34 years | 830 | 8.79%, see rank | 13.02% | 13.42% |
35 to 44 years | 1,110 | 11.75%, see rank | 14.13% | 14.18% |
45 to 54 years | 1,425 | 15.09%, see rank | 15.32% | 14.48% |
55 to 64 years | 1,168 | 12.37%, see rank | 10.72% | 10.81% |
65 to 74 years | 758 | 8.03%, see rank | 6.22% | 6.50% |
75 to 84 | 675 | 7.15%, see rank | 4.25% | 4.40% |
85 years and over | 346 | 3.66%, see rank | 1.92% | 1.71% |
US Census 2000 data
Total population: 9,721
Median Age (
see rank)
Rock County | 39.90 years old |
Minnesota | 35.40 years old |
U.S. | 35.30 years old |
Median Age, Male (
see rank)
Rock County | 38.40 years old |
Minnesota | 34.40 years old |
U.S. | 34.00 years old |
Median Age, Female (
see rank)
Rock County | 41.20 years old |
Minnesota | 36.30 years old |
U.S. | 36.50 years old |
| Rock County | % of the Total Population | Minnesota | U.S. |
Under 5 years | 578 | 5.95%, see rank | 6.70% | 6.81% |
5 to 9 years | 685 | 7.05%, see rank | 7.23% | 7.30% |
10 to 14 years | 777 | 7.99%, see rank | 7.62% | 7.29% |
15 to 19 years | 778 | 8.00%, see rank | 7.61% | 7.18% |
20 to 24 years | 438 | 4.51%, see rank | 6.56% | 6.74% |
25 to 34 years | 968 | 9.96%, see rank | 13.68% | 14.18% |
35 to 44 years | 1,370 | 14.09%, see rank | 16.75% | 16.04% |
45 to 54 years | 1,280 | 13.17%, see rank | 13.53% | 13.39% |
55 to 64 years | 863 | 8.88%, see rank | 8.23% | 8.63% |
65 to 74 years | 855 | 8.80%, see rank | 6.01% | 6.54% |
75 to 84 | 817 | 8.40%, see rank | 4.33% | 4.39% |
85 years and over | 312 | 3.21%, see rank | 1.74% | 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.