Sandwich is a medium-sized coastal town (i.e. on the ocean, a bay, or inlet) located in the state of Massachusetts. With a population of 20,611 people and four associated neighborhoods, Sandwich is the 96th largest community in Massachusetts.

Housing costs in Sandwich 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 Massachusetts.

One interesting thing about the economy is that relatively large numbers of people worked from their home: 11.93% 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, Sandwich is a great place for families with children to consider. First of all, many other families with children live here, making Sandwich 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, Sandwich has a high rate of owner-occupied single family homes, which tends to reflect stability in the local community. Finally, Sandwich’s overall crime rate is lower than average for the country.

Sandwich 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. Quite often, nautical areas such as these attract visitors and locals who come to enjoy the scenery and various waterfront activities.

The citizens of Sandwich are among the most well-educated in the nation: 49.45% of adults in Sandwich have a bachelor's degree or even advanced degree, whereas the average US city has 21.84% holding at least a bachelor's degree.

The per capita income in Sandwich in 2022 was $59,623, which is upper middle income relative to Massachusetts, and wealthy relative to the rest of the US. This equates to an annual income of $238,492 for a family of four.

The people who call Sandwich home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Sandwich residents report their race to be White, followed by Asian. Important ancestries of people in Sandwich include Irish, English, Italian, German, and French.

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