| | 1980 | 1990 | 2000 | 2005 | Percent change | | 1990-2000 | 2000-2005 | | Austin MSA | 585,051 | 846,227 | 1,249,763 | 1,452,529 | 47.7% | 16.2% | | Bastrop Co. | 24,726 | 38,263 | 57,733 | 69,932 | 50.9% | 21.1% | | Caldwell Co. | 23,637 | 26,392 | 32,194 | 36,523 | 22.0% | 13.4% | | Hays Co. | 40,594 | 65,614 | 97,589 | 124,432 | 48.7% | 27.5% | | Travis Co. | 419,573 | 576,407 | 812,280 | 888,185 | 40.9% | 9.3% | | Williamson Co. | 76,521 | 139,551 | 249,967 | 333,457 | 79.1% | 33.4% | | Texas | 14,225,512 | 16,986,335 | 20,851,820 | 22,859,968 | 22.8% | 9.6% | | United States | -- | -- | -- | -- | 13.1% | 5.3% |
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