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 | 2018 | 2020 | 2025 | |
| Total Population | 331,859 | 355,339 | 375,076 | 385,417 | 402,329 |
| Change Since 2000 | 23,480 | 43,217 | 53,558 | 70,470 | |
| Pct. Change Since 2000 | 7.1% | 13.0% | 16.1% | 21.2% | |
| Components of Population Change 2024 to 2025 | ||
| Number | ||
| Net Domestic Migration | 806 | |
| International Migration | 890 | |
| Natural Increase (births minus deaths) | 1,510 | |
| Births | 5,156 | |
| Deaths | 3,646 | |
| Population Estimates by Age in 2025 | ||
| Number | Pct. Dist | |
| Preschool (0 to 4) | 26,076 | 6.5% |
| School Age (5 to 17) | 73,347 | 18.2% |
| College Age (18 to 24) | 36,765 | 9.1% |
| Young Adult (25 to 44) | 108,226 | 26.9% |
| Older Adult (45 to 64) | 89,513 | 22.2% |
| Older (65 plus) | 68,402 | 17.0% |
| Population Estimates by Race and Hispanic Origin in 2025 | ||
| Number | Pct. Dist | |
| American Ind. or Alaskan Native Alone | 3,438 | 0.9% |
| Asian Alone | 25,077 | 6.2% |
| Black Alone | 48,265 | 12.0% |
| Native Hawaiian and Other Pac. Isl. Alone | 330 | 0.1% |
| White Alone | 304,545 | 75.7% |
| Two or More Race Groups | 20,674 | 5.1% |
| Hispanic or Latino | ||
| Non-Hispanic or Latino | 361,730 | 89.9% |
| Hispanic or Latino | 40,599 | 10.1% |
| Households in 2024 | ||
| Number | Pct. Dist | |
| Total Households | 156,570 | 100.0% |
| Family Households | 97,556 | 62.3% |
| Married with Children | 29,009 | 18.5% |
| Married without Children | 41,968 | 26.8% |
| Single Parents | 15,312 | 9.8% |
| Other | 11,267 | 7.2% |
| Non-family Households | 59,014 | 37.7% |
| Living Alone | 48,152 | 30.8% |
| Average Household Size | 2.55 | |
| Average Family Household Size | 4.09 | |
| Population Counts by Decade | |||
| Population | Numerical Chg. | Pct. Chg. | |
| 1950 | 183,722 | NA | NA |
| 1960 | 232,196 | 48,474 | 26.4% |
| 1970 | 280,455 | 48,259 | 20.8% |
| 1980 | 294,335 | 13,880 | 4.9% |
| 1990 | 300,836 | 6,501 | 2.2% |
| 2000 | 331,859 | 31,023 | 10.3% |
| 2010 | 355,339 | 23,480 | 7.1% |
| 2020 | 385,417 | 30,078 | 8.5% |
| Population Projections | |||||
| 2020 | 2025 | 2030 | 2035 | 2040 | |
| Population Projections | 386,082 | 399,555 | 411,056 | 419,877 | 428,315 |
| Change Since 2020 | 13,473 | 24,974 | 33,795 | 42,233 | |
| Pct. Change Since 2020 | 3.5% | 6.5% | 8.8% | 10.9% | |