Stillwater County Historical Age Data
ACS 2010-2014 data
Total population: 9,214
Median Age (
see rank)
| Stillwater County | 47.30 years old |
| Montana | 39.80 years old |
| U.S. | 37.40 years old |
Median Age, Male (
see rank)
| Stillwater County | 47.00 years old |
| Montana | 38.60 years old |
| U.S. | 36.10 years old |
Median Age, Female (
see rank)
| Stillwater County | 47.40 years old |
| Montana | 40.90 years old |
| U.S. | 38.80 years old |
| | Stillwater County | % of the Total Population | Montana | U.S. |
| Under 5 years | 442 | 4.80%, see rank | 6.07% | 6.36% |
| 5 to 9 years | 600 | 6.51%, see rank | 6.39% | 6.51% |
| 10 to 14 years | 542 | 5.88%, see rank | 6.00% | 6.59% |
| 15 to 19 years | 577 | 6.26%, see rank | 6.51% | 6.85% |
| 20 to 24 years | 340 | 3.69%, see rank | 7.07% | 7.13% |
| 25 to 34 years | 849 | 9.21%, see rank | 12.49% | 13.47% |
| 35 to 44 years | 1,000 | 10.85%, see rank | 11.27% | 12.96% |
| 45 to 54 years | 1,430 | 15.52%, see rank | 13.90% | 14.09% |
| 55 to 64 years | 1,745 | 18.94%, see rank | 14.59% | 12.29% |
| 65 to 74 years | 1,042 | 11.31%, see rank | 8.89% | 7.64% |
| 75 to 84 | 449 | 4.87%, see rank | 4.77% | 4.25% |
| 85 years and over | 198 | 2.15%, see rank | 2.05% | 1.85% |
US Census 2010 data
Total population: 9,117
Median Age (
see rank)
| Stillwater County | 45.70 years old |
| Montana | 39.80 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Stillwater County | 45.20 years old |
| Montana | 38.80 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Stillwater County | 46.30 years old |
| Montana | 41.00 years old |
| U.S. | 38.50 years old |
| | Stillwater County | % of the Total Population | Montana | U.S. |
| Under 5 years | 549 | 6.02%, see rank | 6.31% | 6.54% |
| 5 to 9 years | 583 | 6.39%, see rank | 6.14% | 6.59% |
| 10 to 14 years | 564 | 6.19%, see rank | 6.18% | 6.70% |
| 15 to 19 years | 571 | 6.26%, see rank | 6.74% | 7.14% |
| 20 to 24 years | 292 | 3.20%, see rank | 6.79% | 6.99% |
| 25 to 34 years | 864 | 9.48%, see rank | 12.42% | 13.30% |
| 35 to 44 years | 1,049 | 11.51%, see rank | 11.42% | 13.30% |
| 45 to 54 years | 1,575 | 17.28%, see rank | 15.14% | 14.58% |
| 55 to 64 years | 1,575 | 17.28%, see rank | 14.03% | 11.82% |
| 65 to 74 years | 878 | 9.63%, see rank | 8.16% | 7.03% |
| 75 to 84 | 462 | 5.07%, see rank | 4.65% | 4.23% |
| 85 years and over | 155 | 1.70%, see rank | 2.02% | 1.78% |
ACS 2008-2012 data
Total population: 9,096
Median Age (
see rank)
| Stillwater County | 46.00 years old |
| Montana | 39.90 years old |
| U.S. | 37.20 years old |
Median Age, Male (
see rank)
| Stillwater County | 45.40 years old |
| Montana | 38.80 years old |
| U.S. | 35.80 years old |
Median Age, Female (
see rank)
| Stillwater County | 47.10 years old |
| Montana | 41.00 years old |
| U.S. | 38.50 years old |
| | Stillwater County | % of the Total Population | Montana | U.S. |
| Under 5 years | 495 | 5.44%, see rank | 6.14% | 6.51% |
| 5 to 9 years | 586 | 6.44%, see rank | 6.31% | 6.57% |
| 10 to 14 years | 576 | 6.33%, see rank | 6.12% | 6.68% |
| 15 to 19 years | 554 | 6.09%, see rank | 6.76% | 7.09% |
| 20 to 24 years | 321 | 3.53%, see rank | 6.91% | 7.04% |
| 25 to 34 years | 880 | 9.67%, see rank | 12.28% | 13.32% |
| 35 to 44 years | 1,002 | 11.02%, see rank | 11.53% | 13.34% |
| 45 to 54 years | 1,503 | 16.52%, see rank | 14.91% | 14.44% |
| 55 to 64 years | 1,643 | 18.06%, see rank | 14.10% | 11.84% |
| 65 to 74 years | 928 | 10.20%, see rank | 8.22% | 7.12% |
| 75 to 84 | 394 | 4.33%, see rank | 4.74% | 4.25% |
| 85 years and over | 214 | 2.35%, see rank | 1.97% | 1.78% |
ACS 2006-2010 data
Total population: 8,934
Median Age (
see rank)
| Stillwater County | 45.00 years old |
| Montana | 39.70 years old |
| U.S. | 36.90 years old |
Median Age, Male (
see rank)
| Stillwater County | 44.30 years old |
| Montana | 38.60 years old |
| U.S. | 35.60 years old |
Median Age, Female (
see rank)
| Stillwater County | 45.90 years old |
| Montana | 40.90 years old |
| U.S. | 38.10 years old |
| | Stillwater County | % of the Total Population | Montana | U.S. |
| Under 5 years | 529 | 5.92%, see rank | 6.13% | 6.62% |
| 5 to 9 years | 450 | 5.04%, see rank | 6.20% | 6.62% |
| 10 to 14 years | 705 | 7.89%, see rank | 6.33% | 6.79% |
| 15 to 19 years | 543 | 6.08%, see rank | 7.14% | 7.28% |
| 20 to 24 years | 321 | 3.59%, see rank | 7.02% | 6.98% |
| 25 to 34 years | 849 | 9.50%, see rank | 11.87% | 13.22% |
| 35 to 44 years | 1,072 | 12.00%, see rank | 12.02% | 13.89% |
| 45 to 54 years | 1,569 | 17.56%, see rank | 15.65% | 14.57% |
| 55 to 64 years | 1,487 | 16.64%, see rank | 13.27% | 11.28% |
| 65 to 74 years | 822 | 9.20%, see rank | 7.69% | 6.74% |
| 75 to 84 | 417 | 4.67%, see rank | 4.86% | 4.30% |
| 85 years and over | 170 | 1.90%, see rank | 1.82% | 1.70% |
ACS 2005-2009 data
Total population: 8,573
Median Age (
see rank)
| Stillwater County | 44.60 years old |
| Montana | 39.00 years old |
| U.S. | 36.50 years old |
Median Age, Male (
see rank)
| Stillwater County | 43.50 years old |
| Montana | 37.70 years old |
| U.S. | 35.20 years old |
Median Age, Female (
see rank)
| Stillwater County | 45.80 years old |
| Montana | 40.20 years old |
| U.S. | 37.90 years old |
| | Stillwater County | % of the Total Population | Montana | U.S. |
| Under 5 years | 504 | 5.88%, see rank | 6.21% | 6.92% |
| 5 to 9 years | 458 | 5.34%, see rank | 6.08% | 6.59% |
| 10 to 14 years | 644 | 7.51%, see rank | 6.35% | 6.83% |
| 15 to 19 years | 584 | 6.81%, see rank | 7.34% | 7.15% |
| 20 to 24 years | 376 | 4.39%, see rank | 7.81% | 7.02% |
| 25 to 34 years | 689 | 8.04%, see rank | 11.76% | 13.42% |
| 35 to 44 years | 1,085 | 12.66%, see rank | 12.26% | 14.18% |
| 45 to 54 years | 1,553 | 18.12%, see rank | 15.63% | 14.48% |
| 55 to 64 years | 1,343 | 15.67%, see rank | 12.47% | 10.81% |
| 65 to 74 years | 773 | 9.02%, see rank | 7.28% | 6.50% |
| 75 to 84 | 319 | 3.72%, see rank | 4.90% | 4.40% |
| 85 years and over | 245 | 2.86%, see rank | 1.91% | 1.71% |
US Census 2000 data
Total population: 8,195
Median Age (
see rank)
| Stillwater County | 40.80 years old |
| Montana | 37.50 years old |
| U.S. | 35.30 years old |
Median Age, Male (
see rank)
| Stillwater County | 40.50 years old |
| Montana | 36.60 years old |
| U.S. | 34.00 years old |
Median Age, Female (
see rank)
| Stillwater County | 41.00 years old |
| Montana | 38.50 years old |
| U.S. | 36.50 years old |
| | Stillwater County | % of the Total Population | Montana | U.S. |
| Under 5 years | 448 | 5.47%, see rank | 6.08% | 6.81% |
| 5 to 9 years | 581 | 7.09%, see rank | 6.87% | 7.30% |
| 10 to 14 years | 632 | 7.71%, see rank | 7.68% | 7.29% |
| 15 to 19 years | 587 | 7.16%, see rank | 7.90% | 7.18% |
| 20 to 24 years | 293 | 3.58%, see rank | 6.47% | 6.74% |
| 25 to 34 years | 830 | 10.13%, see rank | 11.45% | 14.18% |
| 35 to 44 years | 1,376 | 16.79%, see rank | 15.73% | 16.04% |
| 45 to 54 years | 1,366 | 16.67%, see rank | 14.97% | 13.39% |
| 55 to 64 years | 896 | 10.93%, see rank | 9.43% | 8.63% |
| 65 to 74 years | 646 | 7.88%, see rank | 6.93% | 6.54% |
| 75 to 84 | 392 | 4.78%, see rank | 4.78% | 4.39% |
| 85 years and over | 148 | 1.81%, see rank | 1.70% | 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.
