Allegheny County
Washington County
Greene County
Fayette County
Westmoreland County
Somerset County
Butler County
Indiana County
Armstrong County
Allegheny County Demographic Statistics
| 2024 Population | 2023 Population | Median Age | Median Income |
|---|---|---|---|
| 1,217,476 | 1,224,825 | 40.6 years | $72,537 |
Washington County Demographic Statistics
| 2024 Population | 2023 Population | Median Age | Median Income |
|---|---|---|---|
| 210,442 | 210,232 | 44.2 years | $74,403 |
Fayette County Demographic Statistics
| 2024 Population | 2023 Population | Median Age | Median Income |
|---|---|---|---|
| 122,428 | 123,915 | 45.2 years | $55,579 |
Greene County Demographic Statistics
| 2024 Population | 2023 Population | Median Age | Median Income |
|---|---|---|---|
| 34,185 | 34,357 | 43.1 years | $66,283 |
Westmoreland County Demographic Statistics
| 2024 Population | 2023 Population | Median Age | Median Income |
|---|---|---|---|
| 350,461 | 351,163 | 47.2 years | $69,454 |
Somerset County Demographic Statistics
| 2024 Population | 2023 Population | Median Age | Median Income |
|---|---|---|---|
| 71,764 | 72,197 | 46.7 years | $57,357 |
Butler County Demographic Statistics
| 2024 Population | 2023 Population | Median Age | Median Income |
|---|---|---|---|
| 199,405 | 198,413 | 43.4 years | $82,932 |
Indiana County Demographic Statistics
| 2024 Population | 2023 Population | Median Age | Median Income |
|---|---|---|---|
| 83,094 | 83,094 | 39.6 years | $57,170 |
Armstrong County Demographic Statistics
| 2024 Population | 2023 Population | Median Age | Median Income |
|---|---|---|---|
| 63,433 | 64,074 | 47.0 years | $61,011 |
Population Density
by County, 2020
Note: Highlighted counties are rural.
Source: https://www.rural.pa.gov/
The Center for Rural Pennsylvania's definition of rural and urban is based on population density. Population density is calculated by dividing the total population of a specific area by the total number of square land miles of that area. According to the 2020 Census, the population of Pennsylvania is 13,002,700 and the number of square miles of land in Pennsylvania is 44,742. Therefore, the population density is 291 people per square mile.
Source: 1998 Britannica Map-of-PA-Counties-Seats
