Jefferson County, IL
Population and Components of Change
| Date |
Population |
%
Change |
Components of Change |
Total
Population
Change |
Births |
Deaths |
Inter-
national
Immigra-
tion |
Net
Domestic
Migration |
| 1970 | 31,848 | - | - |
- | - | - | - |
| 1971 | 32,300 | 1.4 | 452 |
- | - | - | - |
| 1972 | 32,700 | 1.2 | 400 |
- | - | - | - |
| 1973 | 33,200 | 1.5 | 500 |
- | - | - | - |
| 1974 | 33,000 | -0.6 | -200 |
- | - | - | - |
| 1975 | 33,800 | 2.4 | 800 |
- | - | - | - |
| 1976 | 34,500 | 2.1 | 700 |
- | - | - | - |
| 1977 | 35,200 | 2.0 | 700 |
- | - | - | - |
| 1978 | 35,500 | 0.9 | 300 |
- | - | - | - |
| 1979 | 35,900 | 1.1 | 400 |
- | - | - | - |
| 1980 | 36,558 | 1.8 | 658 |
- | - | - | - |
| 1981 | 37,887 | 3.6 | 1,329 |
749 | 533 | - | - |
| 1982 | 38,004 | 0.3 | 117 |
583 | 396 | - | - |
| 1983 | 38,252 | 0.7 | 248 |
597 | 393 | - | - |
| 1984 | 38,281 | 0.1 | 29 |
614 | 394 | - | - |
| 1985 | 38,577 | 0.8 | 296 |
619 | 399 | - | - |
| 1986 | 38,103 | -1.2 | -474 |
589 | 404 | - | - |
| 1987 | 37,578 | -1.4 | -525 |
550 | 374 | - | - |
| 1988 | 37,171 | -1.1 | -407 |
542 | 372 | - | - |
| 1989 | 36,995 | -0.5 | -176 |
541 | 401 | - | - |
| 1990 | 37,020 | 0.1 | 25 |
403 | 300 | - | - |
| 1991 | 37,154 | 0.4 | 134 |
719 | 489 | 4 | -166 |
| 1992 | 37,293 | 0.4 | 139 |
546 | 390 | 9 | -87 |
| 1993 | 38,489 | 3.2 | 1,196 |
516 | 399 | -3 | 1,018 |
| 1994 | 39,094 | 1.6 | 605 |
464 | 412 | 12 | 469 |
| 1995 | 39,459 | 0.9 | 365 |
478 | 457 | 15 | 254 |
| 1996 | 39,557 | 0.2 | 98 |
506 | 439 | 14 | -46 |
| 1997 | 39,654 | 0.2 | 97 |
464 | 425 | 28 | -48 |
| 1998 | 39,695 | 0.1 | 41 |
444 | 428 | 17 | -49 |
| 1999 | 39,981 | 0.7 | 286 |
463 | 432 | 24 | 107 |
| 2000 | 40,045 | 0.2 | 64 |
- | - | - | - |
| 2001 | 40,020 | -0.1 | -25 |
606 | 514 | 15 | -97 |
| 2002 | 40,055 | 0.1 | 35 |
475 | 398 | 9 | -21 |
| 2003 | 40,020 | -0.1 | -35 |
469 | 450 | 4 | -3 |
| 2004 | 40,030 | 0.0 | 10 |
473 | 423 | 10 | -30 |
| 2005 | 40,137 | 0.3 | 107 |
469 | 425 | 11 | 82 |
| 2006 | 40,154 | 0.0 | 17 |
512 | 421 | 12 | -72 |
| 2007 | 40,168 | 0.0 | 14 |
499 | 394 | 9 | -112 |
Note: Decade years represent April 1, Census data, not the mid-year estimates.
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