St. Johns is a somewhat small city located in the state of Michigan. With a population of 7,699 people and four associated neighborhoods, St. Johns is the 145th largest community in Michigan.

A relatively large number of people in St. Johns telecommute to their jobs. Overall, about 15.99% of the workforce works from home. While this may seem like a small number, as a fraction of the total workforce it ranks among the highest in the country. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

The citizens of St. Johns are slightly better educated than the national average of 21.84% for all cities and towns, with 22.94% of adults in St. Johns having a bachelor's degree or advanced degree.

The per capita income in St. Johns in 2022 was $35,934, which is upper middle income relative to Michigan, and middle income relative to the rest of the US. This equates to an annual income of $143,736 for a family of four. However, St. Johns contains both very wealthy and poor people as well.

The people who call St. Johns home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of St. Johns residents report their race to be White, followed by Black or African-American. Important ancestries of people in St. Johns include German, Irish, English, Polish, and Dutch.

The most common language spoken in St. Johns is English. Other important languages spoken here include Polish and Italian.