Harrington is a very small city located in the state of Delaware. With a population of 3,934 people and two associated neighborhoods, Harrington is the 16th largest community in Delaware. Harrington has a large stock of pre-World War II architecture, making it one of the older and more historic cities in the country.

Telecommuters are a relatively large percentage of the workforce: 15.15% 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.

As is often the case in a small city, Harrington doesn't have a public transportation system that people use for their commute.

The overall education level of Harrington is somewhat higher than in the average US city of 21.84%: 27.93% of adults 25 and older in the city have at least a bachelor's degree.

The per capita income in Harrington in 2022 was $34,885, which is lower middle income relative to Delaware, and middle income relative to the rest of the US. This equates to an annual income of $139,540 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, Jamaican, Bermudan, and Italian.

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