The post office closed on August 31, 1900.

Geer is a historic settlement that was named after early settler William Geer, who became the first postmaster when the Geer post office opened on June 13, 1890.The settlement began in 1835 when Michael Frain from New York came to the area and purchased land in Superior Township. The name of the lake and community are sometimes spelled as Frains Lake or Frain's Lake.

It is along Plymouth Road near the small lake of the same name. The oldest structure within the community is the Dixboro General Store, which was built in 1840. However, the railroads bypassed Dixboro in favor of Ann Arbor, and the community slowly dwindled. Even after John Dix sold his properties and moved to Texas in 1833, the community was growing faster than the nearby community of Ann Arbor. The post office was then restored on two separate occasions from Juntil Januand again from until it ultimately closed on June 15, 1905. The post office closed on September 25, 1850. A post office opened under the name Dixborough, which was named after John Dix, on December 6, 1825. The name was first recorded in 1828 at a time when the area was still administratively part of Wayne County until Washtenaw County was created in 1829. Dixboro was settled as early as 1825 by John Dix and was platted in 1826 by A. The population was 13,058 at the 2010 census. Superior Charter Township is a charter township of Washtenaw County in the U.S.

Superior township zip code