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Learn more about the county-wide Reassessment and the current status of the project.
Browse available job postings and career opportunities with Mercer County.
Discover information on election results, voter registration, polling locations, and more.
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Learn more about the Board of Commissioners and how they serve the citizens of Mercer County.
America250PA
2026 Kick-Off Events
Posted February 9, 2026
2026 IS HERE! Beginning January 16 in Philadelphia, America250PA will kick off the Semiquincentennial year with a two-week tour of all 67 counties—celebrating at courthouses and historic sites across Pennsylvania.
Mercer County's Kick-off Event is February 24 at 9:30 AM in the Courthouse Rotunda.
Will you be joining us in YOUR county? See more details and RSVP by clicking the link below!
Learn More & RSVP
View Flyer
Clean and Green
Posted March 26, 2026
Applications are currently being accepted by the Mercer County Tax Assessment Office. Deadline to file for consideration for the 2027 tax year is October 15, 2026. Applications for 2028 will be accepted beginning in 2027.
Click Here to Learn more
Mercer County Reassessment Update
Posted March 27, 2026
Click Here For the Latest Reassessment Updates.
Call the Mercer County Tax Assessment Office at +1 724 662 7551 with questions.
Commissioners Meeting
April 2, 2026
3:00 pm in the Courthouse Assembly Room
April 3, 2026
In Observance of Good Friday, The Courthouse will be closed.
View Official Holidays
Hard-to-recycle
April 14, 2026
The Lawrence-Mercer Recycling/Solid Waste Department offers a program for the collection of select hard-to-recycle items. Collection days are held the 2nd Tuesday of each month from 9 AM to 1 PM, and transition between locations in Mercer and Lawrence counties. This makes the program accessible to as many people as possible.
Click Here For More Details
March 12, 2026 Commissioners Meeting
Attend the Board of Commissioners' Public Meetings Remotely
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| Click here for link Meeting number: 2630 881 2509 Password: mK2EvvtTR25 |
+1-650-479-3208 Access code: 2630 881 2509 |
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