Killingly is a medium-sized town located in the state of Connecticut. With a population of 18,093 people and four associated neighborhoods, Killingly is the 66th largest community in Connecticut.

Also of interest is that Killingly 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: 11.14% 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 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 citizens of Killingly are slightly better educated than the national average of 21.84% for all cities and towns, with 22.86% of adults in Killingly having a bachelor's degree or advanced degree.

The per capita income in Killingly in 2022 was $40,277, 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 $161,108 for a family of four. However, Killingly contains both very wealthy and poor people as well.

Killingly is a somewhat 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. Important ancestries of people in Killingly include French, English, Italian, Irish, and French Canadian.

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