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2020-2050 Total Population |
| GeoID | Name | Total Population, 2020 | Total Population, 2025 | Total Population, 2030 | Total Population, 2035 | Total Population, 2040 | Total Population, 2045 | Total Population, 2050 |
|---|---|---|---|---|---|---|---|---|
| 05000US42003 | Allegheny County | 1,218,456 | 1,189,095 | 1,203,248 | 1,207,753 | 1,210,092 | 1,215,072 | 1,230,774 |
| 05000US42005 | Armstrong County | 65,279 | 61,410 | 60,901 | 61,236 | 61,813 | 62,182 | 62,211 |
| 05000US42007 | Beaver County | 164,783 | 156,202 | 156,511 | 157,585 | 158,935 | 160,471 | 162,307 |
| 05000US42019 | Butler County | 187,785 | 189,052 | 195,205 | 200,977 | 205,837 | 209,322 | 211,582 |
| 05000US42051 | Fayette County | 130,336 | 122,593 | 119,285 | 118,299 | 118,122 | 117,914 | 117,657 |
| 05000US42059 | Greene County | 36,492 | 33,291 | 32,052 | 31,641 | 31,658 | 31,873 | 32,022 |
| 05000US42063 | Indiana County | 84,476 | 79,642 | 78,395 | 79,154 | 79,580 | 78,737 | 76,777 |
| 05000US42073 | Lawrence County | 86,120 | 81,006 | 80,612 | 81,803 | 83,241 | 84,524 | 85,347 |
| 05000US42125 | Washington County | 207,077 | 205,749 | 211,410 | 216,645 | 221,205 | 224,719 | 227,386 |
| 05000US42129 | Westmoreland County | 350,738 | 341,553 | 345,488 | 349,907 | 354,151 | 356,878 | 358,128 |
| 04000US42SPC | SPC Region | 2,531,542 | 2,459,593 | 2,483,107 | 2,505,000 | 2,524,634 | 2,541,692 | 2,564,191 |