Click Here For the Latest Reassessment Updates.

Call the Mercer County Tax Assessment Office at +1 724 662 7551 with questions.

Celebrate America's 250th Birthday in Mercer County. Click Here to learn more about America250 and scheduled events!

Click Here to View 2026 Scheduled Events

Posted January 7, 2026

•  The deadline to register to vote for the May 19, 2026 Municipal Election is May 4, 2026.


•  The Last day to request a Mail-In ballot is May 12, 2026 by 5:00 PM


•  Mail-In Ballots must be returned by 8 pm on May 19, 2026.

Go to the Election Homepage

Posted August 1, 2025

Mercer County is in the process of updating its comprehensive plan to guide growth and development over the next 10-15 years. This initiative aims to address key priorities such as economic development, infrastructure improvements, environmental sustainability, and enhancing quality of life for residents.
Visit the Mercer County Comprehensive Plan Homepage

Posted August 1, 2025

We are excited to celebrate America250PA with you through our virtual Bingo Game. The game is designed to encourage you to explore Mercer County and visit places you may not have explored before and learn something new about your county along the way.
Click Here For More Details