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 | 529,702 | 0.5 | 2,646 |
8,291 | 3,880 | 1,631 | -1,199 |
| 2002 | 529,261 | -0.1 | -441 |
6,545 | 3,364 | 1,173 | -4,419 |
| 2003 | 526,633 | -0.5 | -2,628 |
6,601 | 3,436 | 1,024 | -6,493 |
| 2004 | 523,261 | -0.6 | -3,372 |
6,333 | 3,389 | 933 | -6,715 |
| 2005 | 522,566 | -0.1 | -695 |
6,206 | 3,337 | 979 | -4,067 |
| 2006 | 524,240 | 0.3 | 1,674 |
6,170 | 3,484 | 978 | -1,754 |
| 2007 | 528,114 | 0.7 | 3,874 |
6,274 | 3,432 | 889 | 148 |
| 2008 | 533,339 | 1.0 | 5,225 |
6,369 | 3,431 | 893 | 1,362 |
Note: Decade years represent April 1, Census data, not the mid-year estimates.
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