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 | 108,978 | 120,561 | 128,121 | 137,959 | 146,917 |
| Change Since 1990 | 11,583 | 19,143 | 28,981 | 37,939 | |
| Pct. Change Since 1990 | 10.6% | 17.6% | 26.6% | 34.8% | |
| Components of Population Change 2017 to 2018 | ||
| Number | ||
| Net Domestic Migration | -933 | |
| International Migration | 792 | |
| Natural Increase (births minus deaths) | 331 | |
| Births | 1,268 | |
| Deaths | 937 | |
| Population Estimates by Age in 2017 | ||
| Number | Pct. Dist | |
| Preschool (0 to 4) | 6,622 | 4.5% |
| School Age (5 to 17) | 16,766 | 11.4% |
| College Age (18 to 24) | 39,036 | 26.6% |
| Young Adult (25 to 44) | 36,676 | 25.0% |
| Older Adult (45 to 64) | 29,417 | 20.0% |
| Older (65 plus) | 18,469 | 12.6% |
| Population Estimates by Race and Hispanic Origin in 2017 | ||
| Number | Pct. Dist | |
| American Ind. or Alaskan Native Alone | 474 | 0.3% |
| Asian Alone | 10,357 | 7.1% |
| Black Alone | 5,331 | 3.6% |
| Native Hawaiian and Other Pac. Isl. Alone | 98 | 0.1% |
| White Alone | 127,033 | 86.6% |
| Two or More Race Groups | 3,693 | 2.5% |
| Hispanic or Latino | ||
| Non-Hispanic or Latino | 141,838 | 96.7% |
| Hispanic or Latino | 5,148 | 3.5% |
| Households in 2017 | ||
| Number | Pct. Dist | |
| Total Households | 55,014 | 100.0% |
| Family Households | 28,541 | 51.9% |
| Married with Children | 7,642 | 13.9% |
| Married without Children | 13,683 | 24.9% |
| Single Parents | 4,184 | 7.6% |
| Other | 3,032 | 5.5% |
| Non-family Households | 26,473 | 48.1% |
| Living Alone | 17,948 | 32.6% |
| Average Household Size | 2.67 | |
| Average Family Household Size | 5.14 | |
| Population Counts by Decade | |||
| Population | Numerical Chg. | Pct. Chg. | |
| 1950 | 50,080 | NA | NA |
| 1960 | 59,225 | 9,145 | 18.3% |
| 1970 | 85,221 | 25,996 | 43.9% |
| 1980 | 98,783 | 13,562 | 15.9% |
| 1990 | 108,978 | 10,195 | 10.3% |
| April 2000 | 120,561 | 11,583 | 10.6% |
| April 2010 | 137,959 | 17,398 | 14.4% |
| Population Projections | |||||
| 2010 | 2015 | 2020 | 2025 | 2030 | |
| Population Projections | 137,974 | 144,814 | 151,396 | 157,683 | 163,506 |
| Change Since 2010 | 6,840 | 13,422 | 19,709 | 25,532 | |
| Pct. Change Since 2010 | 5.0% | 9.7% | 14.3% | 18.5% | |