Jefferson County, CO
Population and Components of Change
| Date |
Population |
%
Change |
Components of Change |
Total
Population
Change |
Births |
Deaths |
Inter-
national
Immigra-
tion |
Net
Domestic
Migration |
| 1970 | 235,368 | - | - |
- | - | - | - |
| 1971 | 249,200 | 5.9 | 13,832 |
- | - | - | - |
| 1972 | 266,600 | 7.0 | 17,400 |
- | - | - | - |
| 1973 | 284,800 | 6.8 | 18,200 |
- | - | - | - |
| 1974 | 296,800 | 4.2 | 12,000 |
- | - | - | - |
| 1975 | 315,300 | 6.2 | 18,500 |
- | - | - | - |
| 1976 | 327,800 | 4.0 | 12,500 |
- | - | - | - |
| 1977 | 339,700 | 3.6 | 11,900 |
- | - | - | - |
| 1978 | 355,200 | 4.6 | 15,500 |
- | - | - | - |
| 1979 | 369,500 | 4.0 | 14,300 |
- | - | - | - |
| 1980 | 371,753 | 0.6 | 2,253 |
- | - | - | - |
| 1981 | 384,689 | 3.5 | 12,936 |
7,228 | 2,378 | - | - |
| 1982 | 393,547 | 2.3 | 8,858 |
6,088 | 1,994 | - | - |
| 1983 | 403,358 | 2.5 | 9,811 |
6,290 | 1,986 | - | - |
| 1984 | 411,993 | 2.1 | 8,635 |
6,451 | 2,014 | - | - |
| 1985 | 418,414 | 1.6 | 6,421 |
6,585 | 2,122 | - | - |
| 1986 | 423,772 | 1.3 | 5,358 |
6,747 | 2,167 | - | - |
| 1987 | 428,666 | 1.2 | 4,894 |
6,681 | 2,155 | - | - |
| 1988 | 431,553 | 0.7 | 2,887 |
6,569 | 2,290 | - | - |
| 1989 | 435,904 | 1.0 | 4,351 |
6,557 | 2,319 | - | - |
| 1990 | 438,430 | 0.6 | 2,526 |
4,895 | 1,664 | - | - |
| 1991 | 447,371 | 2.0 | 8,941 |
8,356 | 3,003 | 340 | 1,723 |
| 1992 | 457,595 | 2.3 | 10,224 |
6,576 | 2,422 | 440 | 4,327 |
| 1993 | 472,208 | 3.2 | 14,613 |
6,599 | 2,585 | 407 | 8,924 |
| 1994 | 483,064 | 2.3 | 10,856 |
6,550 | 2,674 | 475 | 5,223 |
| 1995 | 492,154 | 1.9 | 9,090 |
6,406 | 2,717 | 540 | 3,539 |
| 1996 | 499,819 | 1.6 | 7,665 |
6,287 | 2,805 | 604 | 2,249 |
| 1997 | 507,371 | 1.5 | 7,552 |
6,421 | 2,965 | 685 | 1,735 |
| 1998 | 513,706 | 1.2 | 6,335 |
6,481 | 3,009 | 632 | 699 |
| 1999 | 523,325 | 1.9 | 9,619 |
6,756 | 3,063 | 644 | 4,111 |
| 2000 | 527,056 | 0.7 | 3,731 |
- | - | - | - |
| 2001 | 529,874 | 0.5 | 2,818 |
8,285 | 3,880 | 1,756 | -1,197 |
| 2002 | 529,684 | 0.0 | -190 |
6,543 | 3,364 | 1,327 | -4,399 |
| 2003 | 527,197 | -0.5 | -2,487 |
6,600 | 3,436 | 1,135 | -6,474 |
| 2004 | 523,953 | -0.6 | -3,244 |
6,333 | 3,389 | 1,049 | -6,767 |
| 2005 | 523,427 | -0.1 | -526 |
6,202 | 3,337 | 1,065 | -4,036 |
| 2006 | 525,243 | 0.3 | 1,816 |
6,134 | 3,413 | 1,100 | -1,831 |
| 2007 | 529,354 | 0.8 | 4,111 |
6,223 | 3,432 | 1,093 | 140 |
Note: Decade years represent April 1, Census data, not the mid-year estimates.
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