St. John is a medium-sized town located in the state of Indiana. With a population of 23,644 people and four associated neighborhoods, St. John is the 48th largest community in Indiana. There's nothing like the smell of a brand new house, and in St. John, you'll find that a large proportion of houses were recently built. New growth in residential real estate is an indication that people are choosing to move to St. John, and putting down their money on brand new construction. St. John’s real estate is, on average, some of the newest in the nation. St. John does seem to be experiencing an influx of affluent people, because the median household income is $127,449.00.

St. John real estate is some of the most expensive in Indiana, although St. John house values don't compare to the most expensive real estate in the U.S.

One interesting thing about the economy is that relatively large numbers of people worked from their home: 11.45% of the workforce. While this number may seem small overall, as a fraction of the total workforce this is high compared to the rest of the county. 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.

Because of many things, St. John is a very good place for families to consider. With an enviable combination of good schools, low crime, college-educated neighbors who tend to support education because of their own experiences, and a high rate of home ownership in predominantly single-family properties, St. John really has some of the features that families look for when choosing a good community to raise children. Is St. John perfect? Of course not, and if you like frenetic nightlife, it will be far from your cup of tea. But overall this is a solid community, with many things to recommend it as a family-friendly place to live.

One downside of living in St. John, however, is that residents on average have to contend with a long commute, spending on average 32.01 minutes every day commuting to work.

St. John is one of the most well-educated cities in the nation. 42.87% of adults in St. John have at least a bachelor's degree. Compare that to the average community in America, which has just 21.84% with a bachelor's degree or higher.

The per capita income in St. John in 2022 was $53,724, which is wealthy relative to Indiana and the nation. This equates to an annual income of $214,896 for a family of four.

St. John is a somewhat ethnically-diverse town. The people who call St. John home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of St. John residents report their race to be White, followed by Black or African-American. St. John also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 10.62% of the town’s residents. Important ancestries of people in St. John include German, Polish, Irish, Italian, and English.

The most common language spoken in St. John is English. Other important languages spoken here include Spanish and Vietnamese.