Clay Township, Michigan

Clay Township, Michigan
Clay Township Municipal Offices
Location within St. Clair County (red) and the administered CDP of Pearl Beach (pink)
Clay Township
Location within the state of Michigan
Clay Township
Location within the United States
Coordinates: 42°36′38″N 82°35′31″W / 42.61056°N 82.59194°W / 42.61056; -82.59194
CountryUnited States
StateMichigan
CountySt. Clair
Settled1805
Established1826 (Plainfield Township)
1828 (Clay Township)
Government
  SupervisorPaul Cassidy
Area
  Total
82.47 sq mi (213.60 km2)
  Land35.32 sq mi (91.48 km2)
  Water47.15 sq mi (122.12 km2)
Elevation
577 ft (176 m)
Population
 (2020)
  Total
8,446
  Density102.4/sq mi (39.5/km2)
Time zoneUTC-5 (Eastern (EST))
  Summer (DST)UTC-4 (EDT)
ZIP code(s)
48001 (Algonac)
48028 (Harsens Island)
Area code810
FIPS code26-16180
GNIS feature ID1626090
WebsiteOfficial website

Clay Township is a civil township of St. Clair County in the U.S. state of Michigan. The population was 8,446 at the 2020 census.

The township is located along the mouth of the St. Clair River at Lake St. Clair. The river delta includes numerous islands, in which Harsens Island is the largest. The township mostly surrounds the city of Algonac, but the two are administered autonomously since Algonac incorporated as a city in 1967. Most of Algonac State Park is located within Clay Township.