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

Clark
Farrell
Fredonia
Hermitage
Greenville
Grove City
Jackson Center
Jamestown
Mercer (county seat)
New Lebanon
Sandy Lake
Sharon
Sharpsville
Sheakleyville
Stoneboro
West Middlesex

Megan's Law Statistics


County Total	Lifetime	Out of State	Pre-SORNA SVP	SVDC	SVP	Ten-Year	T1	T2	T3
316	69	40	16	0	30	10	54	37	60

Last updated: 01/31/2025

Registration Sites

Mercer State Police - 826 Franklin Road, Mercer, PA 16137

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

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a
b

SOAB Approved Treatment Providers

Other PFR-specific resources

Daily Newspapers

The Herald - Sharon
Record Argus - Greenville

State Representatives

Replace as relevant from directory at palegis.us.

Sen. Michele Brooks (Senate District 50)
Rep. Timothy Bonner (House District 17)
Rep. Parke Wentling (House District 7)

Primary Broadcast Media

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Mercer County