Yaphank is a somewhat small town located in the state of New York. With a population of 5,974 people and two associated neighborhoods, Yaphank is the 278th largest community in New York. There's nothing like the smell of a brand new house, and in Yaphank, 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 Yaphank, and putting down their money on brand new construction. Yaphank’s real estate is, on average, some of the newest in the nation. Yaphank does seem to be experiencing an influx of affluent people, because the median household income is $108,971.00.

Housing costs in Yaphank 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.

Telecommuters are a relatively large percentage of the workforce: 7.61% 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.

One downside of living in Yaphank, however, is that residents on average have to contend with a long commute, spending on average 33.20 minutes every day commuting to work.

The population of Yaphank is very well educated relative to most cities and towns in the nation, where the average community has 21.84% of its adult population holding a 4-year degree or higher: 35.37% of adults in Yaphank have a bachelor's degree or even advanced degree.

The per capita income in Yaphank in 2022 was $54,448, 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 $217,792 for a family of four.

Yaphank is a somewhat ethnically-diverse town. The people who call Yaphank home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Yaphank residents report their race to be White, followed by Black or African-American. Yaphank also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 10.73% of the town’s residents. Important ancestries of people in Yaphank include German, Italian, Irish, Polish, and English.

The most common language spoken in Yaphank is English. Other important languages spoken here include Spanish and German/Yiddish.