GeoID	Name	1960 Households	1970 Households	1980 Households	1990 Households	2000 Households	2010 Households	2020 Households
05000US42003	Allegheny County	483,893	512,493	541,204	541,261	537,150	533,960	551,013
05000US42005	Armstrong County	23,638	24,187	28,118	28,309	29,005	28,713	28,061
05000US42007	Beaver County	59,099	64,113	71,704	71,939	72,576	71,383	71,971
05000US42019	Butler County	32,184	37,216	49,298	55,325	65,862	72,835	78,727
05000US42051	Fayette County	49,905	49,108	56,659	56,110	59,969	55,997	54,089
05000US42059	Greene County	11,726	11,585	14,205	14,624	15,060	14,724	14,058
05000US42063	Indiana County	21,442	22,908	30,035	31,710	34,123	35,005	33,286
05000US42073	Lawrence County	32,756	33,045	37,457	36,350	37,091	37,126	35,939
05000US42125	Washington County	64,364	66,149	76,938	78,533	81,130	85,089	87,688
05000US42129	Westmoreland County	102,387	116,419	139,034	144,080	149,813	153,650	152,833
04000US42SPC	SPC Region	881,394	937,223	1,044,652	1,058,241	1,081,779	1,088,482	1,107,665