A post office called St. Michael has been in operation since 1858 The city took its name from St. Michael Roman Catholic Church. St. Michael was incorporated in 1890. The Corner Bar, a restaurant in service since 1897, is at 10 Main Street South downtown. It is shutting down on January 19th, 2020. A complete history of the city, ‘’Faith, Family and Farming’’, was written by Bob Zahler. The history is also tracked by the St. Michael Historical Society, whose mission is “to collect, preserve and share the history of the City of St. Michael.”
St. Michael is part of St. Michael–Albertville Independent School District #885. The St. Michael–Albertville school colors are royal blue and gold and the mascot is the Knight. The district consists of seven schools and two alternative academies. The seven schools include St. Michael-Albertville High School (Grades 9–12), St. Michael–Albertville Middle School East (Grades 5–8), St. Michael–Albertville Middle School West (Grades 5–8), St. Michael Elementary School (Grades 1–4), Fieldstone Elementary School (Grades 1–4), Big Woods Elementary School (Grades 1–4), and Albertville Primary School (Kindergarten). The two academies are Page Academy (Middle School alternative) and the Knights’ Academy (High School alternative). There is also a private Catholic school in St. Michael for grades K–8, including preschool.
A new high school opened for the 2009–10 school year, and a dedication ceremony took place on September 20, 2009. The previous high school was converted into a new middle school (Middle School West). The current middle school has been renamed Middle School East.
As of the census of 2010, there were 16,399 people, 5,239 households, and 4,367 families residing in the city. The population density was 501.0 inhabitants per square mile. There were 5,482 housing units at an average density of 167.5 per square mile. The racial makeup of the city was 93.3% White, 1.9% African American, 0.2% Native American, 2.4% Asian, 0.6% from other races, and 1.6% from two or more races. Hispanic or Latino of any race were 1.9% of the population.
There were 5,239 households of which 53.0% had children under the age of 18 living with them, 73.1% were married couples living together, 6.6% had a female householder with no husband present, 3.7% had a male householder with no wife present, and 16.6% were non-families. 12.4% of all households were made up of individuals and 3.4% had someone living alone who was 65 years of age or older. The average household size was 3.13 and the average family size was 3.43.
The median age in the city was 33.4 years. 34.8% of residents were under the age of 18; 5.2% were between the ages of 18 and 24; 31.7% were from 25 to 44; 21.9% were from 45 to 64; and 6.3% were 65 years of age or older. The gender makeup of the city was 50.7% male and 49.3% female.
As of the census of 2000, there were 9,099 people, 2,926 households, and 2,437 families residing in the city. The population density was 279.4 people per square mile. There were 3,058 housing units at an average density of 93.9 per square mile. The racial makeup of the city was 98.46% White, 0.03% African American, 0.16% Native American, 0.51% Asian, 0.16% from other races, and 0.67% from two or more races. Hispanic or Latino of any race were 0.98% of the population. 49.9% were of German, 8.7% Norwegian, 7.0% Irish, 6.9% United States or American and 5.7% Swedish ancestry.
There were 2,926 households out of which 51.9% had children under the age of 18 living with them, 75.1% were married couples living together, 5.6% had a female householder with no husband present, and 16.9% were non-families. 11.3% of all households were made up of individuals and 3.6% had someone living alone who was 65 years of age or older. The average household size was 3.09 and the average family size was 3.40.
In the city, the population was spread out with 34.6% under the age of 18, 6.3% from 18 to 24, 37.7% from 25 to 44, 16.0% from 45 to 64, and 5.5% who were 65 years of age or older. The median age was 31 years. For every 100 females, there were 103.3 males. For every 100 females age 18 and over, there were 100.2 males
The median income for a household in the city was $69,903, and the median income for a family was $74,236. Males had a median income of $46,488 versus $32,402 for females. The per capita income for the city was $24,742. About 1.4% of families and 2.7% of the population were below the poverty line, including 3.1% of those under age 18 and 10.0% of those age 65 or over.