Colchester vs Groton

A side-by-side comparison of Colchester and Groton: population, income, housing, and more.

Colchester and Groton are places in Connecticut. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Groton has the higher population (9,343 vs 4,624 in Colchester). Colchester has the higher median household income ($79,685 vs $69,811 in Groton). Colchester has the higher median home value ($280,500 vs $278,900 in Groton).

Population, income & housing

	Colchester	Groton
Population	4,624	9,343
Median age	52.0 yrs	38.6 yrs
Median household income	$79,685	$69,811
Median home value	$280,500	$278,900
Median gross rent	$1,444	$1,179
Housing units	2,331	5,193
Homeownership rate	56.0%	41.3%
Bachelor's degree or higher	34.4%	34.7%
Unemployment rate	3.4%	6.4%

Trends (ACS 5-year, 2019–2023)

	Colchester	Groton
Population	4,788 → 4,624 (-3.4%)	9,030 → 9,343 (+3.5%)
Median household income	$66,685 → $79,685 (+19.5%)	$52,859 → $69,811 (+32.1%)
Median home value	$213,600 → $280,500 (+31.3%)	$221,800 → $278,900 (+25.7%)
Median gross rent	$1,211 → $1,444 (+19.2%)	$1,014 → $1,179 (+16.3%)

Colchester

Population

4,7884,624

Median household income

$66,685$79,685

Median home value

$213,600$280,500

Median gross rent

$1,211$1,444

Groton

Population

9,0309,343

Median household income

$52,859$69,811

Median home value

$221,800$278,900

Median gross rent

$1,014$1,179

Age & race/ethnicity

Age distribution (share)

	Colchester	Groton
Under 5	4.8%	3.3%
5 to 17	9.1%	12.2%
18 to 24	6.9%	11.5%
25 to 34	12.0%	19.6%
35 to 44	13.0%	9.7%
45 to 54	6.7%	8.7%
55 to 64	19.1%	19.4%
65 to 74	15.4%	8.8%
75 and over	13.1%	6.8%

Race & ethnicity (share)

	Colchester	Groton
White (non-Hispanic)	91.4%	62.2%
Black or African American	1.0%	9.0%
American Indian & Alaska Native	0.0%	0.2%
Asian	0.7%	5.4%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.4%	0.7%
Two or more races	2.4%	6.4%
Hispanic or Latino	4.1%	16.0%

Educational attainment (age 25+)

Share of adults 25+

	Colchester	Groton
No high school diploma	4.0%	8.7%
High school graduate	30.3%	26.1%
Some college or associate's	31.3%	30.6%
Bachelor's degree	20.6%	24.4%
Graduate or professional degree	13.8%	10.3%

Commute to work

How workers get to work (share)

	Colchester	Groton
Drove alone	70.6%	71.0%
Carpooled	6.7%	7.2%
Public transit	0.0%	2.6%
Walked	2.4%	13.7%
Bicycle	0.0%	0.3%
Worked from home	15.7%	4.4%
Other means	4.7%	0.8%

Housing

Units in structure (share)

	Colchester	Groton
1-unit, detached	52.3%	38.5%
1-unit, attached	7.8%	4.1%
2 to 4 units	20.1%	27.4%
5 to 19 units	16.6%	16.4%
20 or more units	1.8%	13.3%
Mobile home & other	1.6%	0.3%

Poverty & households

	Colchester	Groton
Poverty rate	7.8%	19.5%
Average household size	2.07	1.99
Mean commute (minutes)	32	18
Median year structure built	1979	1968