South Plainfield is a medium-sized borough located in the state of New Jersey. With a population of 24,228 people and seven associated neighborhoods, South Plainfield is the 79th largest community in New Jersey.

Housing costs in South Plainfield are among some of the highest in the nation, although real estate prices here don't compare to real estate prices in the most expensive communities in New Jersey.

Also of interest is that South Plainfield has more people living here who work in computers and math than 95% of the places in the US.

One interesting thing about the economy is that relatively large numbers of people worked from their home: 12.04% 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.

South Plainfield is a good choice for families with children because of several factors. Many other families with children live here, making it a place where both parents and children are more likely to develop social ties with other families. The borough’s good public school district and large population of college-educated adults provide an environment conducive to academic success. Many people own their own single-family homes, providing areas for children to play and stability in the community. Finally, South Plainfield’s overall crime rate is lower than average for the country.

South Plainfield is one of the most well-educated cities in the nation. 43.00% of adults in South Plainfield 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 South Plainfield in 2022 was $48,206, which is middle income relative to New Jersey, and wealthy relative to the rest of the US. This equates to an annual income of $192,824 for a family of four.

South Plainfield is an extremely ethnically-diverse borough. The people who call South Plainfield home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of South Plainfield residents report their race to be White, followed by Asian. South Plainfield also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 18.44% of the borough’s residents. Important ancestries of people in South Plainfield include Italian, Irish, German, Polish, and English.

In addition, South Plainfield has a lot of people living here who were born outside of the US (23.92%).

The most common language spoken in South Plainfield is English. Other important languages spoken here include Spanish and Langs. of India.