Isadore is a small unincorporated community in the southern part of the township at. It began when Polish immigrants arrived from Milwaukee, Wisconsin in about 1870 and settled into farming in the area. The first Roman Catholic Church, called "Holy Rosary", was built in 1883 and a parochial school the following year. Originally called "Four Corners", the name was changed to honor Saint Isadore, the patron saint of farmers. A post office was established on July 27, 1892 and operated until May 15, 1912. A new Catholic school was built in 1905, and the current Holy Rosary Catholic Church, a brick structure, was built in 1922. Later, a high school was added, graduating its first class in 1942. The high school operated until 1961. The intersection today consists of the church, school, a rectory built in 1966, a cemetery, and a couple of houses, surrounded by farmland on rolling hills.
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 1,095 people, 435 households, and 325 families residing in the township. The population density was 39.5 per square mile. There were 681 housing units at an average density of 24.6 per square mile. The racial makeup of the township was 97.72% White, 0.46% African American, 0.64% Native American, 0.18% Asian, 0.27% Pacific Islander, 0.55% from other races, and 0.18% from two or more races. Hispanic or Latino of any race were 2.92% of the population. There were 435 households, out of which 32.0% had children under the age of 18 living with them, 65.7% were married couplesliving together, 4.6% had a female householder with no husband present, and 25.1% were non-families. 20.9% of all households were made up of individuals, and 7.6% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 2.86. In the township the population was spread out, with 25.3% under the age of 18, 5.8% from 18 to 24, 26.6% from 25 to 44, 24.3% from 45 to 64, and 18.0% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 108.2 males. For every 100 females age 18 and over, there were 109.2 males. The median income for a household in the township was $43,214, and the median income for a family was $46,875. Males had a median income of $31,250 versus $23,958 for females. The per capita income for the township was $18,707. About 3.2% of families and 7.0% of the population were below the poverty line, including 8.1% of those under age 18 and 1.0% of those age 65 or over.
