Killingly is a medium-sized town located in the state of Connecticut. With a population of 17,837 people and four associated neighborhoods, Killingly is the 66th largest community in Connecticut.

One interesting thing about the economy is that relatively large numbers of people worked from their home: 9.61% 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.

The town is relatively quiet, having a combination of lower population density and few of those groups of people who have a tendency to be noisy. For example, Killingly has relatively fewer families with younger children, and/or college students. Combined, this makes Killingly a pretty quiet place to live overall. If you like quiet, you will probably enjoy it here.

The education level of Killingly citizens is a little higher than the average for US cities and towns: 22.94% of adults in Killingly have at least a bachelor's degree.

The per capita income in Killingly in 2022 was $36,074, which is low income relative to Connecticut, and upper middle income relative to the rest of the US. This equates to an annual income of $144,296 for a family of four. However, Killingly contains both very wealthy and poor people as well.

Killingly is a very ethnically-diverse town. The people who call Killingly home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Killingly residents report their race to be White, followed by Black or African-American. Killingly also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 14.36% of the town’s residents. Important ancestries of people in Killingly include French, English, Irish, Italian, and French Canadian.

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