Fair Oaks is an unincorporated community in Union Township, Jasper County, Indiana.Fair Oaks was made a station on the railroad built through that territory in the early 1880s. The Fair Oaks post office was established in 1884.Fair Oaks is located at 41°04′30″N 87°15′27″W / 41.07500°N 87.25750°W / 41.07500; -87.25750.As of 2013, Fair Oaks Farms in Fair Oaks features a working Rotolactor that is open to the public as a part of its "Dairy Adventure" tour.