Poquonnock Bridge is a village and census-designated place (CDP) in the town of Groton in New London County, Connecticut, United States. The population was 1,727 at the 2010 census.
The village is located just east of the head of the Poquonnock River near the intersection of U.S. Route 1 and Connecticut Route 117. The village was first settled in 1652–53 by James Morgan, James Avery, and Nehemiah Smith. The Groton Town Hall is located in the village.
According to the United States Census Bureau, the CDP has a total area of 1.4 square miles (3.7 km2), of which 1.4 square miles (3.5 km2) is land, and 0.077 square miles (0.2 km2) (5.07%) is water.
As of the census of 2000, there were 1,592 people, 588 households, and 415 families residing in the CDP. The population density was 1,165.8 people per square mile (448.7/km2). There were 630 housing units at an average density of 461.3 per square mile (177.6/km2). The racial makeup of the CDP was 65.45% White, 14.13% African American, 3.83% Native American, 8.04% Asian, 0.25% Pacific Islander, 1.76% from other races, and 6.53% from two or more races. Hispanic or Latino of any race were 6.16% of the population.
There were 588 households out of which 38.9% had children under the age of 18 living with them, 41.8% were married couples living together, 22.4% had a female householder with no husband present, and 29.3% were non-families. 23.5% of all households were made up of individuals, and 7.7% had someone living alone who was 65 years of age or older. The average household was 2.71 person, and the average family size was 3.14.