Londonderry is a medium-sized town located in the state of New Hampshire. With a population of 26,543 people and seven associated neighborhoods, Londonderry is the ninth largest community in New Hampshire.

Londonderry home prices are not only among the most expensive in New Hampshire, but Londonderry real estate also consistently ranks among the most expensive in America.

Also of interest is that Londonderry 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: 16.82% 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, Londonderry is a great place for families with children to consider. First of all, many other families with children live here, making Londonderry 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, Londonderry has a high rate of owner-occupied single family homes, which tends to reflect stability in the local community. Finally, Londonderry’s overall crime rate is lower than average for the country.

The citizens of Londonderry are among the most well-educated in the nation: 48.26% of adults in Londonderry 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 Londonderry in 2022 was $53,861, which is upper middle income relative to New Hampshire, and wealthy relative to the rest of the US. This equates to an annual income of $215,444 for a family of four.

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

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