Westmoreland County, PA
Population and Components of Change
| Date |
Population |
%
Change |
Components of Change |
Total
Population
Change |
Births |
Deaths |
Inter-
national
Immigra-
tion |
Net
Domestic
Migration |
| 1970 | 376,935 | - | - |
- | - | - | - |
| 1971 | 379,800 | 0.8 | 2,865 |
- | - | - | - |
| 1972 | 382,100 | 0.6 | 2,300 |
- | - | - | - |
| 1973 | 382,700 | 0.2 | 600 |
- | - | - | - |
| 1974 | 381,900 | -0.2 | -800 |
- | - | - | - |
| 1975 | 385,300 | 0.9 | 3,400 |
- | - | - | - |
| 1976 | 387,400 | 0.5 | 2,100 |
- | - | - | - |
| 1977 | 388,200 | 0.2 | 800 |
- | - | - | - |
| 1978 | 389,600 | 0.4 | 1,400 |
- | - | - | - |
| 1979 | 392,600 | 0.8 | 3,000 |
- | - | - | - |
| 1980 | 392,184 | -0.1 | -416 |
- | - | - | - |
| 1981 | 391,939 | -0.1 | -245 |
5,859 | 4,696 | - | - |
| 1982 | 390,190 | -0.4 | -1,749 |
4,752 | 3,697 | - | - |
| 1983 | 387,822 | -0.6 | -2,368 |
4,631 | 3,776 | - | - |
| 1984 | 385,483 | -0.6 | -2,339 |
4,441 | 3,886 | - | - |
| 1985 | 380,825 | -1.2 | -4,658 |
4,404 | 3,902 | - | - |
| 1986 | 376,936 | -1.0 | -3,889 |
4,381 | 3,963 | - | - |
| 1987 | 373,907 | -0.8 | -3,029 |
4,296 | 3,921 | - | - |
| 1988 | 372,158 | -0.5 | -1,749 |
4,308 | 3,826 | - | - |
| 1989 | 370,411 | -0.5 | -1,747 |
4,337 | 3,866 | - | - |
| 1990 | 370,321 | 0.0 | -90 |
3,224 | 2,949 | - | - |
| 1991 | 371,523 | 0.3 | 1,202 |
5,526 | 4,939 | 46 | 1,374 |
| 1992 | 373,857 | 0.6 | 2,334 |
4,404 | 3,901 | 57 | 1,973 |
| 1993 | 375,255 | 0.4 | 1,398 |
4,298 | 4,214 | 4 | 1,211 |
| 1994 | 375,980 | 0.2 | 725 |
4,070 | 4,157 | 33 | 736 |
| 1995 | 376,188 | 0.1 | 208 |
4,140 | 4,252 | 30 | 219 |
| 1996 | 375,656 | -0.1 | -532 |
3,914 | 4,233 | 28 | -207 |
| 1997 | 374,158 | -0.4 | -1,498 |
3,808 | 4,485 | 58 | -977 |
| 1998 | 373,060 | -0.3 | -1,098 |
3,763 | 4,331 | 21 | -614 |
| 1999 | 371,248 | -0.5 | -1,812 |
3,797 | 4,398 | 9 | -994 |
| 2000 | 369,993 | -0.3 | -1,255 |
- | - | - | - |
| 2001 | 368,331 | -0.4 | -1,662 |
4,441 | 5,388 | 114 | -544 |
| 2002 | 366,900 | -0.4 | -1,431 |
3,406 | 4,445 | 64 | -185 |
| 2003 | 366,424 | -0.1 | -476 |
3,448 | 4,374 | 33 | 874 |
| 2004 | 365,487 | -0.3 | -937 |
3,446 | 4,432 | 64 | 164 |
| 2005 | 364,660 | -0.2 | -827 |
3,331 | 4,452 | 51 | 560 |
| 2006 | 363,480 | -0.3 | -1,180 |
3,415 | 4,329 | 61 | -209 |
| 2007 | 362,326 | -0.3 | -1,154 |
3,417 | 4,363 | 53 | -399 |
Note: Decade years represent April 1, Census data, not the mid-year estimates.
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