Blair County, Pennsylvania
Demographics
As of the census of 2000, there were 127,089 people and 52,159 households within the county. The population density was 246 people per square mile (95/km²).

Blair County, Pennsylvania

Section Title: Demographics
Table Section Text: As of the census of 2000, there were 127,089 people and 52,159 households within the county. The population density was 246 people per square mile (95/km²).

Historical population

Census	Pop.	%±

1850	21,777	—

1860	27,829	27.8%

1870	38,051	36.7%

1880	52,740	38.6%

1890	70,866	34.4%

1900	85,099	20.1%

1910	108,858	27.9%

1920	128,334	17.9%

1930	139,840	9.0%

1940	140,358	0.4%

1950	139,519	−0.6%

1960	137,270	−1.6%

1970	135,356	−1.4%

1980	136,621	0.9%

1990	130,542	−4.4%

2000	129,144	−1.1%

2010	127,089	−1.6%

Est. 2018	122,492	−3.6%

U.S. Decennial Census 1790-1960 1900-1990 1990-2000 2010-2018

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