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 | |||||
| 1990 | 2000 | 2005 | 2010 | 2018 | |
| Total Population | 38,835 | 46,163 | 48,421 | 50,033 | 49,568 |
| Change Since 1990 | 7,328 | 9,586 | 11,198 | 10,733 | |
| Pct. Change Since 1990 | 18.9% | 24.7% | 28.8% | 27.6% | |
| Components of Population Change 2017 to 2018 | ||
| Number | ||
| Net Domestic Migration | -84 | |
| International Migration | -14 | |
| Natural Increase (births minus deaths) | 40 | |
| Births | 497 | |
| Deaths | 457 | |
| Population Estimates by Age in 2017 | ||
| Number | Pct. Dist | |
| Preschool (0 to 4) | 2,656 | 5.4% |
| School Age (5 to 17) | 8,632 | 17.4% |
| College Age (18 to 24) | 3,910 | 7.9% |
| Young Adult (25 to 44) | 11,421 | 23.0% |
| Older Adult (45 to 64) | 14,600 | 29.4% |
| Older (65 plus) | 8,522 | 17.2% |
| Population Estimates by Race and Hispanic Origin in 2017 | ||
| Number | Pct. Dist | |
| American Ind. or Alaskan Native Alone | 118 | 0.2% |
| Asian Alone | 224 | 0.5% |
| Black Alone | 315 | 0.6% |
| Native Hawaiian and Other Pac. Isl. Alone | 30 | 0.1% |
| White Alone | 48,493 | 97.7% |
| Two or More Race Groups | 561 | 1.1% |
| Hispanic or Latino | ||
| Non-Hispanic or Latino | 49,124 | 99.0% |
| Hispanic or Latino | 617 | 1.2% |
| Households in 2017 | ||
| Number | Pct. Dist | |
| Total Households | 18,667 | 100.0% |
| Family Households | 13,361 | 71.6% |
| Married with Children | 3,928 | 21.0% |
| Married without Children | 6,865 | 36.8% |
| Single Parents | 1,498 | 8.0% |
| Other | 1,070 | 5.7% |
| Non-family Households | 5,306 | 28.4% |
| Living Alone | 4,528 | 24.3% |
| Average Household Size | 2.66 | |
| Average Family Household Size | 3.71 | |
| Population Counts by Decade | |||
| Population | Numerical Chg. | Pct. Chg. | |
| 1950 | 25,141 | NA | NA |
| 1960 | 28,674 | 3,533 | 14.1% |
| 1970 | 29,430 | 756 | 2.6% |
| 1980 | 34,291 | 4,861 | 16.5% |
| 1990 | 38,835 | 4,544 | 13.3% |
| April 2000 | 46,163 | 7,328 | 18.9% |
| April 2010 | 50,033 | 3,870 | 8.4% |
| Population Projections | |||||
| 2010 | 2015 | 2020 | 2025 | 2030 | |
| Population Projections | 50,047 | 51,927 | 53,482 | 54,726 | 55,655 |
| Change Since 2010 | 1,880 | 3,435 | 4,679 | 5,608 | |
| Pct. Change Since 2010 | 3.8% | 6.9% | 9.3% | 11.2% | |