In the fantastic area of Mercer County you’ll be in good company with around 379,301 residents with around 64% of those homeowners. With an average age of 39, the residents of Mercer County are well established, made up of families of all age groups. Though fairly kicked back throughout the week, during weekends and holidays, you can see a lot more activity and excitement. Over the past 30 days roughly 275 homes have been sold with an average sold price of $633,689. That is an increase of $2,285 from the previous period.