Welcome to the fantastic area of Middlesex County! As of the latest US census, around 856,790 call this area home and around 64% are homeowners. With an average age of 40, the residents of Middlesex County are well established, with many growing families of all ages. However, during weekends and holidays, you can see a lot more activity and excitement. Over the past 30 days roughly 479 homes have been sold with an average sold price of $648,147. That is an increase of $18,952 from the previous period.