Welcome to the fantastic area of Geismar! As of the latest US census, around 10,112 call this area home and around 87% are homeowners. With an average age of 37, the residents of Geismar 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 7 homes have been sold with an average sold price of $422,007. That is an increase of $37,870 from the previous period.