Grundy 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 | 26,535 | - | - |
- | - | - | - |
| 1971 | 27,400 | 3.3 | 865 |
- | - | - | - |
| 1972 | 28,000 | 2.2 | 600 |
- | - | - | - |
| 1973 | 28,100 | 0.4 | 100 |
- | - | - | - |
| 1974 | 28,000 | -0.4 | -100 |
- | - | - | - |
| 1975 | 28,400 | 1.4 | 400 |
- | - | - | - |
| 1976 | 28,800 | 1.4 | 400 |
- | - | - | - |
| 1977 | 29,400 | 2.1 | 600 |
- | - | - | - |
| 1978 | 30,400 | 3.4 | 1,000 |
- | - | - | - |
| 1979 | 30,500 | 0.3 | 100 |
- | - | - | - |
| 1980 | 30,582 | 0.3 | 82 |
- | - | - | - |
| 1981 | 30,948 | 1.2 | 366 |
641 | 311 | - | - |
| 1982 | 30,677 | -0.9 | -271 |
502 | 246 | - | - |
| 1983 | 30,619 | -0.2 | -58 |
518 | 239 | - | - |
| 1984 | 30,735 | 0.4 | 116 |
480 | 239 | - | - |
| 1985 | 30,845 | 0.4 | 110 |
464 | 237 | - | - |
| 1986 | 31,024 | 0.6 | 179 |
456 | 235 | - | - |
| 1987 | 31,313 | 0.9 | 289 |
424 | 244 | - | - |
| 1988 | 31,575 | 0.8 | 262 |
443 | 271 | - | - |
| 1989 | 31,951 | 1.2 | 376 |
462 | 281 | - | - |
| 1990 | 32,337 | 1.2 | 386 |
338 | 204 | - | - |
| 1991 | 33,255 | 2.8 | 918 |
582 | 334 | 16 | 660 |
| 1992 | 33,755 | 1.5 | 500 |
450 | 279 | 28 | 313 |
| 1993 | 34,263 | 1.5 | 508 |
473 | 285 | 30 | 305 |
| 1994 | 34,685 | 1.2 | 422 |
431 | 271 | 38 | 231 |
| 1995 | 35,073 | 1.1 | 388 |
497 | 272 | 22 | 153 |
| 1996 | 35,651 | 1.6 | 578 |
457 | 315 | 22 | 415 |
| 1997 | 36,263 | 1.7 | 612 |
510 | 281 | 28 | 352 |
| 1998 | 36,732 | 1.3 | 469 |
471 | 293 | 25 | 324 |
| 1999 | 37,121 | 1.1 | 389 |
509 | 284 | 25 | 189 |
| 2000 | 37,535 | 1.1 | 414 |
- | - | - | - |
| 2001 | 38,191 | 1.7 | 656 |
618 | 389 | 44 | 411 |
| 2002 | 38,622 | 1.1 | 431 |
491 | 310 | 39 | 242 |
| 2003 | 39,417 | 2.1 | 795 |
527 | 334 | 36 | 583 |
| 2004 | 40,870 | 3.7 | 1,453 |
584 | 361 | 31 | 1,266 |
| 2005 | 43,459 | 6.3 | 2,589 |
621 | 327 | 34 | 2,298 |
| 2006 | 45,512 | 4.7 | 2,053 |
694 | 313 | 32 | 1,665 |
| 2007 | 46,987 | 3.2 | 1,475 |
750 | 351 | 30 | 1,034 |
| 2008 | 47,958 | 2.1 | 971 |
801 | 338 | 29 | 462 |
Note: Decade years represent April 1, Census data, not the mid-year estimates.
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