Day County Historical Age Data
ACS 2010-2014 data
Total population: 5,664
Median Age (
see rank)
| Day County | 48.10 years old |
| South Dakota | 36.80 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Day County | 46.40 years old |
| South Dakota | 35.60 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Day County | 48.90 years old |
| South Dakota | 38.20 years old |
| U.S. | 38.80 years old |
| | Day County | % of the Total Population | South Dakota | U.S. |
| Under 5 years | 328 | 5.79%, see rank | 7.10% | 6.36% |
| 5 to 9 years | 372 | 6.57%, see rank | 6.91% | 6.51% |
| 10 to 14 years | 341 | 6.02%, see rank | 6.64% | 6.59% |
| 15 to 19 years | 296 | 5.23%, see rank | 6.95% | 6.85% |
| 20 to 24 years | 272 | 4.80%, see rank | 7.15% | 7.13% |
| 25 to 34 years | 543 | 9.59%, see rank | 13.12% | 13.47% |
| 35 to 44 years | 518 | 9.15%, see rank | 11.34% | 12.96% |
| 45 to 54 years | 771 | 13.61%, see rank | 13.41% | 14.09% |
| 55 to 64 years | 863 | 15.24%, see rank | 12.72% | 12.29% |
| 65 to 74 years | 660 | 11.65%, see rank | 7.51% | 7.64% |
| 75 to 84 | 480 | 8.47%, see rank | 4.78% | 4.25% |
| 85 years and over | 220 | 3.88%, see rank | 2.36% | 1.85% |
US Census 2010 data
Total population: 5,710
Median Age (
see rank)
| Day County | 47.90 years old |
| South Dakota | 36.90 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Day County | 47.00 years old |
| South Dakota | 35.60 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Day County | 48.70 years old |
| South Dakota | 38.20 years old |
| U.S. | 38.50 years old |
| | Day County | % of the Total Population | South Dakota | U.S. |
| Under 5 years | 332 | 5.81%, see rank | 7.32% | 6.54% |
| 5 to 9 years | 360 | 6.30%, see rank | 6.82% | 6.59% |
| 10 to 14 years | 326 | 5.71%, see rank | 6.63% | 6.70% |
| 15 to 19 years | 320 | 5.60%, see rank | 7.08% | 7.14% |
| 20 to 24 years | 243 | 4.26%, see rank | 7.07% | 6.99% |
| 25 to 34 years | 527 | 9.23%, see rank | 12.95% | 13.30% |
| 35 to 44 years | 531 | 9.30%, see rank | 11.44% | 13.30% |
| 45 to 54 years | 895 | 15.67%, see rank | 14.36% | 14.58% |
| 55 to 64 years | 867 | 15.18%, see rank | 12.01% | 11.82% |
| 65 to 74 years | 587 | 10.28%, see rank | 7.08% | 7.03% |
| 75 to 84 | 485 | 8.49%, see rank | 4.88% | 4.23% |
| 85 years and over | 237 | 4.15%, see rank | 2.36% | 1.78% |
ACS 2008-2012 data
Total population: 5,673
Median Age (
see rank)
| Day County | 47.70 years old |
| South Dakota | 37.10 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Day County | 46.30 years old |
| South Dakota | 35.70 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Day County | 49.10 years old |
| South Dakota | 38.50 years old |
| U.S. | 38.50 years old |
| | Day County | % of the Total Population | South Dakota | U.S. |
| Under 5 years | 311 | 5.48%, see rank | 7.14% | 6.51% |
| 5 to 9 years | 337 | 5.94%, see rank | 6.69% | 6.57% |
| 10 to 14 years | 375 | 6.61%, see rank | 6.73% | 6.68% |
| 15 to 19 years | 314 | 5.53%, see rank | 7.20% | 7.09% |
| 20 to 24 years | 245 | 4.32%, see rank | 7.06% | 7.04% |
| 25 to 34 years | 513 | 9.04%, see rank | 12.84% | 13.32% |
| 35 to 44 years | 557 | 9.82%, see rank | 11.55% | 13.34% |
| 45 to 54 years | 841 | 14.82%, see rank | 14.25% | 14.44% |
| 55 to 64 years | 837 | 14.75%, see rank | 12.14% | 11.84% |
| 65 to 74 years | 622 | 10.96%, see rank | 7.11% | 7.12% |
| 75 to 84 | 456 | 8.04%, see rank | 4.91% | 4.25% |
| 85 years and over | 265 | 4.67%, see rank | 2.37% | 1.78% |
ACS 2006-2010 data
Total population: 5,714
Median Age (
see rank)
| Day County | 47.10 years old |
| South Dakota | 37.20 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Day County | 45.80 years old |
| South Dakota | 35.80 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Day County | 47.80 years old |
| South Dakota | 38.50 years old |
| U.S. | 38.10 years old |
| | Day County | % of the Total Population | South Dakota | U.S. |
| Under 5 years | 337 | 5.90%, see rank | 7.07% | 6.62% |
| 5 to 9 years | 360 | 6.30%, see rank | 6.54% | 6.62% |
| 10 to 14 years | 316 | 5.53%, see rank | 7.00% | 6.79% |
| 15 to 19 years | 315 | 5.51%, see rank | 7.35% | 7.28% |
| 20 to 24 years | 284 | 4.97%, see rank | 7.21% | 6.98% |
| 25 to 34 years | 448 | 7.84%, see rank | 12.43% | 13.22% |
| 35 to 44 years | 648 | 11.34%, see rank | 12.10% | 13.89% |
| 45 to 54 years | 889 | 15.56%, see rank | 14.72% | 14.57% |
| 55 to 64 years | 821 | 14.37%, see rank | 11.32% | 11.28% |
| 65 to 74 years | 593 | 10.38%, see rank | 6.87% | 6.74% |
| 75 to 84 | 404 | 7.07%, see rank | 5.07% | 4.30% |
| 85 years and over | 299 | 5.23%, see rank | 2.32% | 1.70% |
ACS 2005-2009 data
Total population: 5,637
Median Age (
see rank)
| Day County | 45.70 years old |
| South Dakota | 37.00 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Day County | 44.00 years old |
| South Dakota | 35.50 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Day County | 46.80 years old |
| South Dakota | 38.40 years old |
| U.S. | 37.90 years old |
| | Day County | % of the Total Population | South Dakota | U.S. |
| Under 5 years | 349 | 6.19%, see rank | 7.07% | 6.92% |
| 5 to 9 years | 304 | 5.39%, see rank | 6.43% | 6.59% |
| 10 to 14 years | 423 | 7.50%, see rank | 6.83% | 6.83% |
| 15 to 19 years | 372 | 6.60%, see rank | 7.56% | 7.15% |
| 20 to 24 years | 257 | 4.56%, see rank | 7.61% | 7.02% |
| 25 to 34 years | 398 | 7.06%, see rank | 12.29% | 13.42% |
| 35 to 44 years | 645 | 11.44%, see rank | 12.31% | 14.18% |
| 45 to 54 years | 872 | 15.47%, see rank | 14.58% | 14.48% |
| 55 to 64 years | 780 | 13.84%, see rank | 10.99% | 10.81% |
| 65 to 74 years | 547 | 9.70%, see rank | 6.80% | 6.50% |
| 75 to 84 | 349 | 6.19%, see rank | 5.20% | 4.40% |
| 85 years and over | 341 | 6.05%, see rank | 2.35% | 1.71% |
US Census 2000 data
Total population: 6,267
Median Age (
see rank)
| Day County | 42.90 years old |
| South Dakota | 35.60 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Day County | 41.70 years old |
| South Dakota | 34.40 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Day County | 44.30 years old |
| South Dakota | 36.70 years old |
| U.S. | 36.50 years old |
| | Day County | % of the Total Population | South Dakota | U.S. |
| Under 5 years | 347 | 5.54%, see rank | 6.77% | 6.81% |
| 5 to 9 years | 390 | 6.22%, see rank | 7.22% | 7.30% |
| 10 to 14 years | 528 | 8.43%, see rank | 7.88% | 7.29% |
| 15 to 19 years | 457 | 7.29%, see rank | 8.27% | 7.18% |
| 20 to 24 years | 201 | 3.21%, see rank | 7.00% | 6.74% |
| 25 to 34 years | 519 | 8.28%, see rank | 12.06% | 14.18% |
| 35 to 44 years | 887 | 14.15%, see rank | 15.29% | 16.04% |
| 45 to 54 years | 861 | 13.74%, see rank | 12.94% | 13.39% |
| 55 to 64 years | 605 | 9.65%, see rank | 8.26% | 8.63% |
| 65 to 74 years | 675 | 10.77%, see rank | 7.04% | 6.54% |
| 75 to 84 | 567 | 9.05%, see rank | 5.16% | 4.39% |
| 85 years and over | 230 | 3.67%, 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.
