Mastic is a medium-sized coastal town (i.e. on the ocean, a bay, or inlet) located in the state of New York. With a population of 15,404 people and three associated neighborhoods, Mastic is the 120th largest community in New York.

Mastic is also nautical, which means that parts of it are somewhat historic and touch the ocean or tidal bodies of water, such as inlets and bays. Such areas are often places that visitors and locals go for waterfront activities or taking in the scenery.

One downside of living in Mastic, however, is that residents on average have to contend with a long commute, spending on average 32.99 minutes every day commuting to work.

The percentage of adults in Mastic who are college-educated is close to the national average for all communities of 21.84%: 18.42% of the adults in Mastic have a bachelor's degree or advanced degree.

The per capita income in Mastic in 2022 was $35,839, which is middle income relative to New York, and upper middle income relative to the rest of the US. This equates to an annual income of $143,356 for a family of four. However, Mastic contains both very wealthy and poor people as well.

Mastic is an extremely ethnically-diverse town. The people who call Mastic home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Mastic residents report their race to be White, followed by Black or African-American. Mastic also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 24.46% of the town’s residents. Important ancestries of people in Mastic include Italian, Irish, German, Polish, and English.

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