Peninsula Township contains the landmass known as the
Old Mission Peninsula, and
Power Island. According to the
United States Census Bureau, the township has a total area of 31.8 square miles (82.5 km), of which 27.9 square miles (72.2 km) is land and 4.0 square miles (10.3 km) (13%) is water.
Old Mission Peninsula The Old Mission Peninsula extends about from the
Lower Peninsula of Michigan into
Grand Traverse Bay, itself a
bay of
Lake Michigan. The peninsula separates Grand Traverse Bay into its West Arm and East Arm. Additionally, the peninsula is adjacent to Bowers Harbor and Old Mission Harbor, smaller inlets of the West Arm and East Arm, respectively. At its widest, the peninsula is only about 3.25 miles shore-to-shore (5.23 kilometers). Unlike the rest of mainland Grand Traverse County, the Old Mission Peninsula, like the neighboring
Leelanau Peninsula, has unusually steep and rising terrain for the region. The northern end of the peninsula, however, is much flatter than the rest, and is a part of the
Antrim–Charlevoix Drumlin Field.
Major highway • (historically known as
Center Road) runs for along the backbone of the peninsula, terminating in a
cul-de-sac at Old Mission Point. It was designated what is now known as a
Pure Michigan Byway Scenic Route in June 2007. The M-37 Scenic Heritage Route proposal is itself a unique resource concerning the character of the peninsula, and the activities along this byway. South of the peninsula, in Traverse City, M-37 intersects highways
US 31 and
M-72.
Communities in
West Grand Traverse Bay from
Chateau Grand Traverse, about halfway up the Old Mission Peninsula. Power Island is politically part of Peninsula Township. • Archie, a
ghost town on the shore of East
Grand Traverse Bay, at . Archie was given a post office in 1885, which lasted until September 1900. The post office reopened the following December, but was closed again in 1902. • Mapleton is an
unincorporated community roughly midway up the Old Mission Peninsula, along
M-37 at . Mapleton was founded in 1859 by the Ogden family of
New York state, with a post office opening the same year. The post office lasted until 1904. Today, despite being a small community, Mapleton is marked by signage along M-37. • Neahtawanta is a historic summer
resort colony at . The word "Neahtawanta" derives from
Ojibwe words meaning "placid waters", in reference to
Bowers Harbor. Neahtawanta was established in 1890 by the Neahtawanta Association, and a post office was established in 1907, only lasting until 1914. Today, Neahtawanta is still occupied by large summer resort homes, and the Neahtawanta Inn remains open. • Ogdensburg, a ghost town at . Ogdensburg was founded by the same Ogden family in 1855, and was one of the region's first settlements. •
Traverse City is immediately adjacent Peninsula Township, bordering it to the south. Much of the south of Peninsula Township has
suburbanized due to its proximity to Traverse City. Traverse City, though, is politically independent of Peninsula Township, and the two are administered separately. == Demographics ==