| | Clark borough | 4213832 | Mercer County 42085 | PA | Hermitage, PA 25850 | Pittsburgh-Weirton-Steubenville,
PA-OH-WV 430 | | https://maps.google.com/?q=Clarkborough+PA |
| | Farrell city | 4225360 | Mercer County 42085 | PA | Hermitage, PA 25850 | Pittsburgh-Weirton-Steubenville,
PA-OH-WV 430 | | https://maps.google.com/?q=Farrellcity+PA |
| | Fredonia borough | 4227688 | Mercer County 42085 | PA | Hermitage, PA 25850 | Pittsburgh-Weirton-Steubenville,
PA-OH-WV 430 | | https://maps.google.com/?q=Fredoniaborough+PA |
| | Greenville borough | 4231328 | Mercer County 42085 | PA | Hermitage, PA 25850 | Pittsburgh-Weirton-Steubenville,
PA-OH-WV 430 | | https://maps.google.com/?q=Greenvilleborough+PA |
| | Grove City borough | 4231656 | Mercer County 42085 | PA | Hermitage, PA 25850 | Pittsburgh-Weirton-Steubenville,
PA-OH-WV 430 | | https://maps.google.com/?q=GroveCityborough+PA |
| | Hermitage city | 4234064 | Mercer County 42085 | PA | Hermitage, PA 25850 | Pittsburgh-Weirton-Steubenville,
PA-OH-WV 430 | Y | https://maps.google.com/?q=Hermitagecity+PA |
| | Jackson Center borough | 4237496 | Mercer County 42085 | PA | Hermitage, PA 25850 | Pittsburgh-Weirton-Steubenville,
PA-OH-WV 430 | | https://maps.google.com/?q=JacksonCenterborough+PA |
| | Jamestown borough | 4237696 | Mercer County 42085 | PA | Hermitage, PA 25850 | Pittsburgh-Weirton-Steubenville,
PA-OH-WV 430 | | https://maps.google.com/?q=Jamestownborough+PA |
| | Mercer borough | 4248696 | Mercer County 42085 | PA | Hermitage, PA 25850 | Pittsburgh-Weirton-Steubenville,
PA-OH-WV 430 | | https://maps.google.com/?q=Mercerborough+PA |
| | New Lebanon borough | 4253768 | Mercer County 42085 | PA | Hermitage, PA 25850 | Pittsburgh-Weirton-Steubenville,
PA-OH-WV 430 | | https://maps.google.com/?q=NewLebanonborough+PA |