Coryell Islands in this township had a post office from 1908 until 1958.
Hessel is an unincorporated community on M-134 north of Marquette Island, the largest of the Les Cheneaux Islands at. It was founded in 1885 by two Swedes and a Norwegian, John and Carl Hessel and John A. Johnson and a post office was established in September 1888. The ZIP code of 49745 serves an area between M-134 and the Lake Huron shore. Hessel is the home of the Antique Wooden Boat Show and Festival of the Arts which is held annually at the public docks on the second weekend of August.
Patrick Landing is a named place in the township approximately one mile southwest of Cedarville on the Les Cheneaux Channel at
Port Dolomite is a commercial port in the eastern end of the township at In 2004, it was the 93rd largest port in the United States ranked by tonnage.
Geography
According to the United States Census Bureau, the township has a total area of, of which is land and is water.
Demographics
As of the census of 2000, there were 2,200 people, 952 households, and 674 families residing in the township. The population density was 27.8 per square mile. There were 1,962 housing units at an average density of 24.8 per square mile. The racial makeup of the township was 86.73% White, 0.05% African American, 9.95% Native American, 0.36% Asian, 0.27% from other races, and 2.64% from two or more races. Hispanic or Latino of any race were 0.64% of the population. There were 952 households, out of which 26.7% had children under the age of 18 living with them, 59.1% were married couplesliving together, 8.4% had a female householder with no husband present, and 29.2% were non-families. 26.3% of all households were made up of individuals, and 12.0% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.76. In the township the population was spread out, with 22.8% under the age of 18, 4.5% from 18 to 24, 23.4% from 25 to 44, 29.8% from 45 to 64, and 19.6% who were 65 years of age or older. The median age was 45 years. For every 100 females, there were 100.0 males. For every 100 females age 18 and over, there were 95.1 males. The median income for a household in the township was $33,975, and the median income for a family was $40,795. Males had a median income of $31,071 versus $21,480 for females. The per capita income for the township was $18,357. About 6.4% of families and 9.9% of the population were below the poverty line, including 16.3% of those under age 18 and 8.3% of those age 65 or over. There is a great influx of population in the summer. Many businesses are seasonal.
Education
The K-12 educational needs of Clark Township residents are served by Les Cheneaux Community Schools.
