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