Harrington is a very small city located in the state of Delaware. With a population of 3,821 people and two associated neighborhoods, Harrington is the 16th largest community in Delaware.

Telecommuters are a relatively large percentage of the workforce: 8.26% 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.

The population of Harrington overall has a level of education that is slightly above the US average for all US cities and towns of 21.84%. Of adults 25 and older in Harrington, 24.84% have at least a bachelor's degree.

The per capita income in Harrington in 2018 was $27,550, which is lower middle income relative to Delaware and the nation. This equates to an annual income of $110,200 for a family of four. However, Harrington contains both very wealthy and poor people as well.

Harrington is an extremely ethnically-diverse city. The people who call Harrington home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Harrington residents report their race to be White, followed by Black or African-American. Important ancestries of people in Harrington include Irish, German, English, Other Subsaharan African, and Jamaican.

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