Portage Township, Mackinac County, Michigan

Geography According to the United States Census Bureau, the township has a total area of 187.0 km² (72.2 mi²). 143.5 km² (55.4 mi²) of it is land and 43.4 km² (16.8 mi²) of it is water. The total area is 23.23% water.

Demographics As of the census of 2000, there are 1,055 people, 462 households, and 312 families residing in the township. The population density is 7.3/km² (19.0/mi²). There are 1,060 housing units at an average density of 7.4/km² (19.1/mi²). The racial makeup of the township is 94.31% White, 0.28% African American, 3.41% Native American, 0.09% Asian, 0.00% Pacific Islander, 0.19% from other races, and 1.71% from two or more races. 1.04% of the population are Hispanic or Latino of any race.

There are 462 households out of which 18.0% have children under the age of 18 living with them, 60.4% are married couples living together, 4.8% have a female householder with no husband present, and 32.3% are non-families. 28.1% of all households are made up of individuals and 13.4% have someone living alone who is 65 years of age or older. The average household size is 2.16 and the average family size is 2.61.

In the township the population is spread out with 16.9% under the age of 18, 5.3% from 18 to 24, 19.8% from 25 to 44, 35.8% from 45 to 64, and 22.2% who are 65 years of age or older. The median age is 50 years. For every 100 females there are 99.8 males. For every 100 females age 18 and over, there are 98.0 males.

The median income for a household in the township is $27,037, and the median income for a family is $31,103. Males have a median income of $27,500 versus $30,000 for females. The per capita income for the township is $15,435. 16.3% of the population and 11.5% of families are below the poverty line. Out of the total people living in poverty, 34.4% are under the age of 18 and 8.5% are 65 or older.