Identifiers: municipality · borough · city
| Rank | Community | Population |
|---|---|---|
| 1 | Monroeville (municipality), PA | 28,640 |
| 2 | Plum (borough), PA | 27,144 |
| 3 | Murrysville (municipality), PA | 21,006 |
| 4 | McKeesport (city), PA | 17,727 |
| 5 | Greensburg (city), PA | 14,976 |
| 6 | Wilkinsburg (borough), PA | 14,349 |
| 7 | Jeannette (city), PA | 8,780 |
| 8 | Swissvale (borough), PA | 8,624 |
| 9 | Latrobe (borough), PA | 8,060 |
| 10 | White Oak (borough), PA | 7,630 |
| 11 | Connellsville (city), PA | 7,031 |
| 12 | Monessen (city), PA | 6,876 |
| 13 | Forest Hills (borough), PA | 6,429 |
| 14 | Duquesne (city), PA | 5,254 |
| 15 | Turtle Creek (borough), PA | 5,114 |
| 16 | Donora (borough), PA | 4,569 |
| 17 | Scottdale (borough), PA | 4,430 |
| 18 | North Braddock (borough), PA | 4,320 |
| 19 | Mount Pleasant (borough), PA | 4,245 |
| 20 | Charleroi (borough), PA | 4,234 |
Identifiers: municipality · city · borough · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Monroeville (municipality), PA | 28,640 |
| 2 | Murrysville (municipality), PA | 21,006 |
| 3 | McKeesport (city), PA | 17,727 |
| 4 | Greensburg (city), PA | 14,976 |
| 5 | Wilkinsburg (borough), PA | 14,349 |
| 6 | Jeannette (city), PA | 8,780 |
| 7 | Latrobe (borough), PA | 8,060 |
| 8 | White Oak (borough), PA | 7,630 |
| 9 | Connellsville (city), PA | 7,031 |
| 10 | Forest Hills (borough), PA | 6,429 |
| 11 | Duquesne (city), PA | 5,254 |
| 12 | Turtle Creek (borough), PA | 5,114 |
| 13 | Donora (borough), PA | 4,569 |
| 14 | Scottdale (borough), PA | 4,430 |
| 15 | North Braddock (borough), PA | 4,320 |
| 16 | Mount Pleasant (borough), PA | 4,245 |
| 17 | Charleroi (borough), PA | 4,234 |
| 18 | Irwin (borough), PA | 3,902 |
| 19 | Level Green (CDP), PA | 3,898 |
| 20 | Manor (borough), PA | 3,585 |