About Blair County
Blair County is a city located in United States, in the Pennsylvania region. According to the latest available data (2026), the population of Blair County is approximately 122,822 residents, making it the #673 most populous city in United States.
Globally, Blair County ranks #13,252 among the world's most populated cities.
Blair County City Statistics
| City | Blair County |
| Country |  United States |
| Population | 122,822 |
| Global Rank | #13,252 |
| Rank in United States | #673 of 867 cities |
| City Category | city |
| Region | Pennsylvania |
| Latitude | 40.47 |
| Longitude | -78.35 |
| Data Year | 2026 |
Where is Blair County Located?
Blair County is located in United States, in the Pennsylvania region, at coordinates 40.47° latitude and -78.35° longitude. Located in the mid-latitudes, Blair County experiences distinct four-season weather patterns.
Nearby Cities
Other Cities in United States
Largest Cities in United States
| # | City | Population |
|---|---|---|
| 1 | Harris County | 4,731,145 |
| 2 | Los Angeles | 3,898,747 |
| 3 | San Diego County | 3,298,634 |
| 4 | Brooklyn | 2,736,074 |
| 5 | Miami-Dade County | 2,701,767 |
Frequently Asked Questions
What is the population of Blair County?
The population of Blair County is approximately 122,822 residents according to the latest available data (2026).
Where is Blair County located?
Blair County is located in United States at approximately 40.47° latitude and -78.35° longitude.
Is Blair County one of the largest cities in United States?
With a population of 122,822, Blair County is one of the notable urban areas in United States. It ranks #673 out of 867 cities in the country.
