According to the United States Census Bureau, the city has a total area of, all of it land. The city is situated in Bingham Township, but is administratively autonomous. A mixture of rich forests, plains and farmland make up the St. Johns area, providing ample opportunity for outdoor sports and agriculture.
As of the census of 2010, there were 7,865 people, 3,147 households, and 2,011 families residing in the city. The population density was. There were 3,451 housing units at an average density of. The racial makeup of the city was 93.9% White, 1.4% African American, 0.6% Native American, 0.5% Asian, 0.1% Pacific Islander, 1.2% from other races, and 2.3% from two or more races. Hispanic or Latino of any race were 4.6% of the population. There were 3,147 households of which 32.8% had children under the age of 18 living with them, 45.2% were married couples living together, 14.0% had a female householder with no husband present, 4.7% had a male householder with no wife present, and 36.1% were non-families. 30.5% of all households were made up of individuals and 13% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.95. The median age in the city is 37.2. 25.4% of residents were under the age of 18; 8.5% were between the ages of 18 and 24; 26.5% were from 25 to 44; 24.1% were from 45 to 64; and 15.6% were 65 years of age or older. The gender makeup of the city was 47.7% male and 52.3% female.
Near the turn of the century, high demand for mint oil in medicines and candy from companies like Wrigley caused a surge in demand for mint farming. The rich, organic, muck soil of Clinton County makes the area around St. Johns particularly well-suited for mint farming. As a result, many mint farmers cultivated mint. The Crosby Mint Farm, established by J.E. Crosby in 1912, claims to be the oldest continuously family-operated mint farm in the United States. Today Clinton County ranks first in Michigan in regards to total mint production. St. Johns is known as the Mint City and has been called "The Mint Capital of the World." Each year since 1985, St. Johns celebrates its mint farming heritage with the St. Johns Mint Festival. The festival typically takes place on the second weekend in August.
Transportation
Highways
connects north to Mt. Pleasant, and Grayling. Southward, it passes through Lansing and Jackson en route to Ohio. It provides a direct connection to I-69 and I-96.
Paine-Gillam-Scott Museum – Home of the Clinton County Historical Society. Built in 1858, the house holds the distinction of being the oldest brick residence in the city of St. Johns.
Clinton Northern Railway Museum - Located in the former Grand Trunk Depot, the museum focuses on railroad history and its impact on small-town America. The museum features several restored railway cars.
IQhub at Agroliquid – Center for agricultural history, innovation and exploration. The IQhub is located inside AgroLiquid's world headquarters in St. Johns, Michigan. The 9,500 square foot agriculture education destination is home to exhibits chronicling the advancement of agriculture, from before the Europeans arrived in the Americas through the present day.
Crime in St. Johns is significantly lower when compared to the national average, and average-to-high when compared to surrounding cities. Violent Crime Rate in 2012
U.S. Average: 214
St. Johns: 95.5
Laingsburg: 279.8
Ovid: 58.9
Elsie: 79.6
Dewitt: N/A
Lansing: 422.7
Reported Incidents from 2001–2012 in St. Johns, MI:
