Groton, Connecticut

Groton population, 2020 to 2024

Groton added 799 residents from July 2020 to July 2024, a change of +8.5%. In the latest year it moved by +853. Among 21 Connecticut places of 5,000 or more, that growth ranks 1st; the median place changed by +2.6%. The median place of 5,000+ in Connecticut has 55,379 people, so Groton is 18% of it.

Groton covers 3.08 square miles of land and 3.68 of water, for 3,299 people per square mile of land. The median Connecticut place of 5,000+ has 3,189, so Groton is close to the typical town.

What county Groton is in

All of Groton's residents live in Southeastern Connecticut Planning Region, which had 282,602 residents in 2024. Groton holds 3.6% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Groton

1 ZIP Code Tabulation Area (ZCTA) overlaps Groton by at least 10% of the ZCTA's or the city's land: 06340. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Groton is

The Census internal point of Groton is at 41.325100, -72.066900. Hartford, the capital, is 43.9 miles NW in a straight line. The nearest larger place is New London, CT (28,081 people), 1.6 miles away. The nearest city of 100,000 or more is Hartford, CT, 44.0 miles away.

Daylight in Groton

At 41.33° N, Groton gets about 15 h 10 min of daylight around the June solstice and 9 h 11 min around the December solstice, a swing of 5 h 59 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Groton

The eight nearest incorporated places of 1,000+ in Connecticut, measured between internal points. The closest is New London, 1.6 miles away, with 28,081 people.