Lake County Historical Age Data
ACS 2010-2014 data
Total population: 11,831
Median Age (
see rank)
| Lake County | 41.90 years old |
| South Dakota | 36.80 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Lake County | 39.50 years old |
| South Dakota | 35.60 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Lake County | 43.90 years old |
| South Dakota | 38.20 years old |
| U.S. | 38.80 years old |
| | Lake County | % of the Total Population | South Dakota | U.S. |
| Under 5 years | 721 | 6.09%, see rank | 7.10% | 6.36% |
| 5 to 9 years | 537 | 4.54%, see rank | 6.91% | 6.51% |
| 10 to 14 years | 724 | 6.12%, see rank | 6.64% | 6.59% |
| 15 to 19 years | 934 | 7.89%, see rank | 6.95% | 6.85% |
| 20 to 24 years | 1,046 | 8.84%, see rank | 7.15% | 7.13% |
| 25 to 34 years | 1,255 | 10.61%, see rank | 13.12% | 13.47% |
| 35 to 44 years | 1,073 | 9.07%, see rank | 11.34% | 12.96% |
| 45 to 54 years | 1,622 | 13.71%, see rank | 13.41% | 14.09% |
| 55 to 64 years | 1,794 | 15.16%, see rank | 12.72% | 12.29% |
| 65 to 74 years | 1,159 | 9.80%, see rank | 7.51% | 7.64% |
| 75 to 84 | 596 | 5.04%, see rank | 4.78% | 4.25% |
| 85 years and over | 370 | 3.13%, see rank | 2.36% | 1.85% |
US Census 2010 data
Total population: 11,200
Median Age (
see rank)
| Lake County | 39.90 years old |
| South Dakota | 36.90 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Lake County | 37.20 years old |
| South Dakota | 35.60 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Lake County | 42.40 years old |
| South Dakota | 38.20 years old |
| U.S. | 38.50 years old |
| | Lake County | % of the Total Population | South Dakota | U.S. |
| Under 5 years | 641 | 5.72%, see rank | 7.32% | 6.54% |
| 5 to 9 years | 689 | 6.15%, see rank | 6.82% | 6.59% |
| 10 to 14 years | 684 | 6.11%, see rank | 6.63% | 6.70% |
| 15 to 19 years | 903 | 8.06%, see rank | 7.08% | 7.14% |
| 20 to 24 years | 963 | 8.60%, see rank | 7.07% | 6.99% |
| 25 to 34 years | 1,203 | 10.74%, see rank | 12.95% | 13.30% |
| 35 to 44 years | 1,081 | 9.65%, see rank | 11.44% | 13.30% |
| 45 to 54 years | 1,684 | 15.04%, see rank | 14.36% | 14.58% |
| 55 to 64 years | 1,459 | 13.03%, see rank | 12.01% | 11.82% |
| 65 to 74 years | 928 | 8.29%, see rank | 7.08% | 7.03% |
| 75 to 84 | 656 | 5.86%, see rank | 4.88% | 4.23% |
| 85 years and over | 309 | 2.76%, see rank | 2.36% | 1.78% |
ACS 2008-2012 data
Total population: 11,364
Median Age (
see rank)
| Lake County | 41.20 years old |
| South Dakota | 37.10 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Lake County | 38.30 years old |
| South Dakota | 35.70 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Lake County | 43.00 years old |
| South Dakota | 38.50 years old |
| U.S. | 38.50 years old |
| | Lake County | % of the Total Population | South Dakota | U.S. |
| Under 5 years | 637 | 5.61%, see rank | 7.14% | 6.51% |
| 5 to 9 years | 595 | 5.24%, see rank | 6.69% | 6.57% |
| 10 to 14 years | 753 | 6.63%, see rank | 6.73% | 6.68% |
| 15 to 19 years | 947 | 8.33%, see rank | 7.20% | 7.09% |
| 20 to 24 years | 944 | 8.31%, see rank | 7.06% | 7.04% |
| 25 to 34 years | 1,180 | 10.38%, see rank | 12.84% | 13.32% |
| 35 to 44 years | 1,119 | 9.85%, see rank | 11.55% | 13.34% |
| 45 to 54 years | 1,726 | 15.19%, see rank | 14.25% | 14.44% |
| 55 to 64 years | 1,503 | 13.23%, see rank | 12.14% | 11.84% |
| 65 to 74 years | 961 | 8.46%, see rank | 7.11% | 7.12% |
| 75 to 84 | 691 | 6.08%, see rank | 4.91% | 4.25% |
| 85 years and over | 308 | 2.71%, see rank | 2.37% | 1.78% |
ACS 2006-2010 data
Total population: 11,008
Median Age (
see rank)
| Lake County | 38.10 years old |
| South Dakota | 37.20 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Lake County | 36.50 years old |
| South Dakota | 35.80 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Lake County | 40.20 years old |
| South Dakota | 38.50 years old |
| U.S. | 38.10 years old |
| | Lake County | % of the Total Population | South Dakota | U.S. |
| Under 5 years | 626 | 5.69%, see rank | 7.07% | 6.62% |
| 5 to 9 years | 624 | 5.67%, see rank | 6.54% | 6.62% |
| 10 to 14 years | 737 | 6.70%, see rank | 7.00% | 6.79% |
| 15 to 19 years | 975 | 8.86%, see rank | 7.35% | 7.28% |
| 20 to 24 years | 960 | 8.72%, see rank | 7.21% | 6.98% |
| 25 to 34 years | 1,157 | 10.51%, see rank | 12.43% | 13.22% |
| 35 to 44 years | 1,109 | 10.07%, see rank | 12.10% | 13.89% |
| 45 to 54 years | 1,738 | 15.79%, see rank | 14.72% | 14.57% |
| 55 to 64 years | 1,236 | 11.23%, see rank | 11.32% | 11.28% |
| 65 to 74 years | 838 | 7.61%, see rank | 6.87% | 6.74% |
| 75 to 84 | 784 | 7.12%, see rank | 5.07% | 4.30% |
| 85 years and over | 224 | 2.03%, see rank | 2.32% | 1.70% |
ACS 2005-2009 data
Total population: 11,500
Median Age (
see rank)
| Lake County | 40.00 years old |
| South Dakota | 37.00 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Lake County | 37.80 years old |
| South Dakota | 35.50 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Lake County | 41.50 years old |
| South Dakota | 38.40 years old |
| U.S. | 37.90 years old |
| | Lake County | % of the Total Population | South Dakota | U.S. |
| Under 5 years | 648 | 5.63%, see rank | 7.07% | 6.92% |
| 5 to 9 years | 551 | 4.79%, see rank | 6.43% | 6.59% |
| 10 to 14 years | 736 | 6.40%, see rank | 6.83% | 6.83% |
| 15 to 19 years | 1,095 | 9.52%, see rank | 7.56% | 7.15% |
| 20 to 24 years | 775 | 6.74%, see rank | 7.61% | 7.02% |
| 25 to 34 years | 1,346 | 11.70%, see rank | 12.29% | 13.42% |
| 35 to 44 years | 1,156 | 10.05%, see rank | 12.31% | 14.18% |
| 45 to 54 years | 1,803 | 15.68%, see rank | 14.58% | 14.48% |
| 55 to 64 years | 1,420 | 12.35%, see rank | 10.99% | 10.81% |
| 65 to 74 years | 938 | 8.16%, see rank | 6.80% | 6.50% |
| 75 to 84 | 851 | 7.40%, see rank | 5.20% | 4.40% |
| 85 years and over | 181 | 1.57%, see rank | 2.35% | 1.71% |
US Census 2000 data
Total population: 11,276
Median Age (
see rank)
| Lake County | 36.50 years old |
| South Dakota | 35.60 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Lake County | 34.80 years old |
| South Dakota | 34.40 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Lake County | 38.50 years old |
| South Dakota | 36.70 years old |
| U.S. | 36.50 years old |
| | Lake County | % of the Total Population | South Dakota | U.S. |
| Under 5 years | 621 | 5.51%, see rank | 6.77% | 6.81% |
| 5 to 9 years | 668 | 5.92%, see rank | 7.22% | 7.30% |
| 10 to 14 years | 790 | 7.01%, see rank | 7.88% | 7.29% |
| 15 to 19 years | 1,245 | 11.04%, see rank | 8.27% | 7.18% |
| 20 to 24 years | 1,048 | 9.29%, see rank | 7.00% | 6.74% |
| 25 to 34 years | 1,043 | 9.25%, see rank | 12.06% | 14.18% |
| 35 to 44 years | 1,600 | 14.19%, see rank | 15.29% | 16.04% |
| 45 to 54 years | 1,478 | 13.11%, see rank | 12.94% | 13.39% |
| 55 to 64 years | 940 | 8.34%, see rank | 8.26% | 8.63% |
| 65 to 74 years | 870 | 7.72%, see rank | 7.04% | 6.54% |
| 75 to 84 | 693 | 6.15%, see rank | 5.16% | 4.39% |
| 85 years and over | 280 | 2.48%, see rank | 2.13% | 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.
