Centereach is a medium-sized town located in the state of New York. With a population of 30,980 people and six associated neighborhoods, Centereach is the 45th largest community in New York.

Housing costs in Centereach 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 York.

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

Telecommuters are a relatively large percentage of the workforce: 8.51% of people work from home. While this number may seem small overall, as a fraction of the total workforce it is high relative to the nation. 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, Centereach is a great place for families with children to consider. First of all, many other families with children live here, making Centereach a place where both parents and children are more likely to develop social ties with other families, as well as find family-oriented services and community. The town’s good public school district and large population of college-educated adults provide an environment conducive to academic values. With regard to real estate, Centereach has a high rate of owner-occupied single family homes, which tends to reflect stability in the local community. Finally, Centereach’s overall crime rate is lower than average for the country.

In Centereach, however, the average commute to work is quite long. On average, people spend 31.28 minutes each day getting to work, which is significantly higher than the national average.

The citizens of Centereach are very well educated compared to the average community in the nation: 34.81% of adults in Centereach have a bachelor's degree or even advanced degree.

The per capita income in Centereach in 2022 was $46,051, which is upper middle income relative to New York, and wealthy relative to the rest of the US. This equates to an annual income of $184,204 for a family of four.

Centereach is a very ethnically-diverse town. The people who call Centereach home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Centereach residents report their race to be White, followed by Asian. Centereach also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 16.58% of the town’s residents. Important ancestries of people in Centereach include Italian, Irish, German, English, and Polish.

The most common language spoken in Centereach is English. Other important languages spoken here include Spanish and Chinese.