Blair County | |
|---|---|
 Blair County Courthouse in Hollidaysburg | |
 Flag  Seal | |
 Location within the U.S. state of Pennsylvania | |
 Pennsylvania's location within the U.S. | |
| Coordinates: 40°28′N 78°21′W / 40.47°N 78.35°W | |
| Country |  United States |
| State |  Pennsylvania |
| Founded | February 26, 1846 |
| Seat | Hollidaysburg |
| Largest city | Altoona |
| Area | |
• Total | 527 sq mi (1,360 km2) |
| • Land | 526 sq mi (1,360 km2) |
| • Water | 1.3 sq mi (3 km2) 0.2% |
| Population (2020) | |
• Total | 122,822 |
| • Density | 234/sq mi (90/km2) |
| Time zone | UTC−5 (Eastern) |
| • Summer (DST) | UTC−4 (EDT) |
| Congressional district | 13th |
| Website | www |
| Designated | April 13, 1982[1] |
Blair County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 122,822.[2] Its county seat is Hollidaysburg, and its largest city is Altoona.[3] The county was created on February 26, 1846, from parts of Huntingdon and Bedford counties. The county is part of the Southwest Pennsylvania region of the state.[a]
Blair County comprises the Altoona, PA metropolitan statistical area. It is also part of the Altoona-Huntingdon, PA Combined Statistical Area, which includes Blair and Huntingdon counties.[4]
- ^ "PHMC Historical Markers Search". Pennsylvania Historical and Museum Commission. Commonwealth of Pennsylvania. Archived from the original (Searchable database) on March 21, 2016. Retrieved January 25, 2014.
- ^ "Census - Geography Profile: Blair County, Pennsylvania". United States Census Bureau. Retrieved April 24, 2022.
- ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
- ^ "Combined Statistical Areas Map (March 2020)" (PDF). The United States Census Bureau. Archived (PDF) from the original on October 21, 2020. Retrieved August 11, 2021.
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