Mercer County


Mercer County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 110,652. Its county seat is Mercer, and its largest city is Hermitage. The county is part of the Northwest Pennsylvania region of the state.
Mercer County compromises the Hermitage, PA Micropolitan Statistical Area, which is included in the Greater Pittsburgh area.
Key Cities/Towns/Boroughs
Cities
- Farrell
- Hermitage
- Sharon
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Megan's Law Statistics
(Copy from PA Megan's Law Database, click on Community Tools at top then the 3rd "Count of..." link and tally residents only)
| County Total | Lifetime | Out of State | Pre-SORNA SVP | SVDC | SVP | Ten-Year | T1 | T2 | T3 |
| 325 | 71 | 37 | 20 | 0 | 30 | 8 | 56 | 43 | 60 |
Last updated: 10/23/25
Registration Sites
- Mercer State Police, 826 Franklin Road, Mercer, PA 16137, 724-748-0044
County parole/probation office contact information
Mercer County is one of two counties in Pennsylvania without a county parole/probation office. Supervision is handled at the State level.
- Probation & Parole Board office is located at 8362 Sharon-Mercer Road, Mercer, PA 16137
Local Reentry Resources
If you know of any local reentry organizations in the county, please contact us at contact@parsol.org
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SOAB Approved Treatment Providers
Other PFR-specific resources
State Representatives and Senators
Find your state representatives and senators here: palegis.us.
PARSOL Information
Region & Contact
- Region: Northwest
- Contact: Olivia O.
County Contact
- Olivia O.