A region's economy thrives or dives because of the people who choose to live there. That choice may occur by being born there and desiring to stay, or a more deliberate one of choosing to relocate from somewhere else. Monitoring change in the size and movement of population is an important barometer of well-being.
| Population Over Time | |||||
| 2000 | 2010 | 2017 | 2020 | 2023 | |
| Total Population | 34,354 | 39,363 | 39,797 | 39,656 | 40,006 |
| Change Since 2000 | 5,009 | 5,443 | 5,302 | 5,652 | |
| Pct. Change Since 2000 | 14.6% | 15.8% | 15.4% | 16.5% | |
| Components of Population Change 2022 to 2023 | ||
| Number | ||
| Net Domestic Migration | 313 | |
| International Migration | 20 | |
| Natural Increase (births minus deaths) | -115 | |
| Births | 382 | |
| Deaths | 497 | |
| Population Estimates by Age in 2023 | ||
| Number | Pct. Dist | |
| Preschool (0 to 4) | 2,067 | 5.2% |
| School Age (5 to 17) | 6,726 | 16.8% |
| College Age (18 to 24) | 2,799 | 7.0% |
| Young Adult (25 to 44) | 9,668 | 24.2% |
| Older Adult (45 to 64) | 10,752 | 26.9% |
| Older (65 plus) | 7,994 | 20.0% |
| Population Estimates by Race and Hispanic Origin in 2023 | ||
| Number | Pct. Dist | |
| American Ind. or Alaskan Native Alone | 129 | 0.3% |
| Asian Alone | 260 | 0.6% |
| Black Alone | 384 | 1.0% |
| Native Hawaiian and Other Pac. Isl. Alone | 30 | 0.1% |
| White Alone | 38,567 | 96.4% |
| Two or More Race Groups | 636 | 1.6% |
| Hispanic or Latino | ||
| Non-Hispanic or Latino | 39,026 | 97.6% |
| Hispanic or Latino | 980 | 2.4% |
| Households in 2023 | ||
| Number | Pct. Dist | |
| Total Households | 15,154 | 100.0% |
| Family Households | 10,097 | 66.6% |
| Married with Children | 2,753 | 18.2% |
| Married without Children | 5,398 | 35.6% |
| Single Parents | 900 | 5.9% |
| Other | 1,046 | 6.9% |
| Non-family Households | 5,057 | 33.4% |
| Living Alone | 4,283 | 28.3% |
| Average Household Size | 2.64 | |
| Average Family Household Size | 3.96 | |
| Population Counts by Decade | |||
| Population | Numerical Chg. | Pct. Chg. | |
| 1950 | 17,858 | NA | NA |
| 1960 | 19,207 | 1,349 | 7.6% |
| 1970 | 20,423 | 1,216 | 6.3% |
| 1980 | 27,276 | 6,853 | 33.6% |
| 1990 | 29,890 | 2,614 | 9.6% |
| 2000 | 34,354 | 4,464 | 14.9% |
| 2010 | 39,363 | 5,009 | 14.6% |
| 2020 | 39,656 | 293 | 0.7% |
| Population Projections | |||||
| 2020 | 2025 | 2030 | 2035 | 2040 | |
| Population Projections | 39,662 | 40,227 | 40,405 | 39,921 | 39,274 |
| Change Since 2020 | 565 | 743 | 259 | -388 | |
| Pct. Change Since 2020 | 1.4% | 1.9% | 0.7% | -1.0% | |