Austin-San Marcos, TX Population by Decades
| Date |
Population |
Population
Change |
Annual
% Change |
| 1900 | 148,210 | - | - |
| 1910 | 162,947 | 14,737 | 1.0 |
| 1920 | 168,279 | 5,332 | 0.3 |
| 1930 | 192,123 | 23,844 | 1.3 |
| 1940 | 214,603 | 22,480 | 1.1 |
| 1950 | 256,645 | 42,042 | 1.8 |
| 1960 | 301,261 | 44,616 | 1.6 |
| 1970 | 398,938 | 97,677 | 2.8 |
| 1980 | 585,051 | 186,113 | 3.9 |
| 1990 | 846,227 | 261,176 | 3.8 |
| 2000 | 1,249,763 | 403,536 | 4.0 |
Source: U.S. Bureau of Census
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