Groton, Connecticut

Town · population 38,411 (2020 Census)

Median home: $340,100
Household income: $88,284
Jan low / Jul high: 24° / 81°
Snow a year: 25 in
Tornadoes ≤10 mi since 1950: 3
Median age: 36.8

Groton is a town of 38,411 people, Connecticut. The median home is worth $340,100, below the typical Connecticut town ($376,000). It ranks better for cycling than 92% of Connecticut towns, more seaside character than 90% of Connecticut towns, better for a vacation home than 85% of Connecticut towns.

How Groton ranks

Percentile among Connecticut towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of Connecticut towns.

The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025).

Homes and cost of living

The median home in Groton is worth $340,100, below the typical Connecticut town ($376,000). Homes cost about 3.9 times the median household income of $88,284, which is more affordable than 36% of Connecticut towns. Median rent is $1,602 a month. 53.4% of households own their home.

Census ACS 5-year estimates, 2020–2024. "Typical town" = median of Connecticut towns with 500+ people.

Housing	Groton	Typical Connecticut town
Median home value	$340,100	$376,000
Median rent	$1,602	$1,462
Median household income	$88,284	$109,167
Home value ÷ income	3.9×	3.6×
Homeownership	53.4%	80.3%
Median year built	1974	1969
Seasonal / vacation homes	3.6%	—

Who lives in Groton

People	Groton	Typical Connecticut town
Median age	36.8	45.0
Age 65 and over	19.5%	20.6%
Under 18	18.4%	—
Bachelor's degree or higher	42.7%	45.8%
Below the poverty line	10.6%	5.7%
Veterans	10.0%	—
Born outside the U.S.	8.3%	—
Work from home	13.6%	16.8%
Average commute	19.3 min	27.6 min
Homes with broadband	91.0%	93.8%

Weather in Groton

July highs average 80.8°F and January lows 23.8°F. About 48.9 inches of rain and melted snow fall a year, with 24.5 inches of snow (typical Connecticut town: 39.0 in). Expect about 3 days a year at 90°F or hotter and 101 nights at or below freezing.

NOAA 1991–2020 climate normals: average daily high and low by month; precipitation and snowfall in inches. Temperatures from the Groton station (0.4 mi away).

Tornadoes, storms and disasters

3 tornadoes have passed within 10 miles of Groton since 1950, compared with 8 for the typical Connecticut town. The strongest, an EF1, struck on October 29, 2018 about 5.4 miles from the town center. The most recent was on October 29, 2018.

NOAA Storm Events Database, tornado tracks (start to end point) passing within 10 miles of the town center, 1950–2026.

Hail of 1 inch or larger has been reported within 10 miles 12 times; the largest was 2.75 inches on May 29, 1969.

Public schools in Groton

5 public schools with 3,292 students, about 11.2 students per teacher.

School	Grades	Students	Per teacher
Robert E. Fitch High School	9-12	1,019	11.0
Groton Middle School	6-8	898	11.2
Ella T. Grasso Technical High School	9-12	674	11.0
Catherine Kolnaski Magnet School	K-5	369	11.5
Charles Barnum Magnet School	PK-5	332	11.9

Towns near Groton

Long Hill, CT
1.0 mi · 3,948 people · home $175,600
Groton, CT
2.4 mi · 9,387 people · home $306,600
Conning Towers-Nautilus Park, CT
3.3 mi · 8,870 people · home $290,100
Old Mystic, CT
3.4 mi · 3,493 people · home $342,500
New London, CT
3.5 mi · 27,367 people · home $253,300
Mystic, CT
4.0 mi · 4,348 people · home $538,800
Waterford, CT
5.1 mi · 3,074 people · home $282,900
Ledyard, CT
5.8 mi · 15,413 people · home $326,200

Groton questions

Is Groton, Connecticut a good place to retire?

On The Town Files lifestyle rankings, Groton scores better for retirees than 21% of Connecticut towns and quieter than 18%. 19.5% of residents are 65 or older (median age 36.8).

How much does a house cost in Groton?

The median owner-occupied home in Groton is valued at $340,100 (Census ACS 2020–2024), against a median household income of $88,284, so homes cost about 3.9 times income. Median rent is $1,602 a month.

What is the weather like in Groton?

July highs average 80.8°F and January lows 23.8°F (NOAA 1991–2020 normals). It gets about 48.9 inches of precipitation a year and 24.5 inches of snow.

Does Groton get tornadoes?

3 tornadoes have passed within 10 miles of Groton since 1950 (NOAA Storm Events); the strongest was an EF1 on October 29, 2018. The typical Connecticut town has had 8.

How this page is made. Every number comes from public data, matched to Groton's Census boundary (GEOID 0918034250). Comparisons use the median of Connecticut towns with at least 500 people. Weather comes from the nearest NOAA normals station; storm counts use NOAA tornado tracks within 10 miles of the town center.

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024)
U.S. Census Bureau, 2020 Census and 2025 Gazetteer (2020 / 2025)
NOAA NCEI U.S. Climate Normals (1991–2020)
NOAA NCEI Storm Events Database (1950–2026)
FEMA OpenFEMA Disaster Declarations (this product uses the FEMA OpenFEMA API but is not endorsed by FEMA) (1953–2026)
NCES Common Core of Data (2023–24)
BLS Quarterly Census of Employment and Wages; USDA ERS county unemployment (BLS LAUS) (2000–2024)
The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025)

Data snapshot 2026-11-13.