Colchester, Connecticut Demographics & Population 2026
During the 2020–2024 ACS period, Colchester, Connecticut had a total population of 4,692, the 68th largest community in Connecticut, with a median household income of $86,760, which is 9% lower than the state average. The poverty rate is 5.7%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Colchester Quick Facts
How Colchester Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 4,624 | 4,692 | +1.5% |
| Median household income | $79,685 | $86,760 | +8.9% |
| Median home value | $280,500 | $294,600 | +5.0% |
How Colchester Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 57 | National average: 61
Education
Educational Attainment (Adults 25+)
Colchester Rankings in Connecticut
Explore Connecticut Rankings
Cities Similar to Colchester
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Long Hill (Southeastern Connecticut County) | 4,399 | $84,201 | $175,600 | 47.9% | 16.1% |
| Byram | 4,633 | $99,734 | $838,400 | 51.6% | 3.2% |
| Quinnipiac University | 4,311 | N/A | N/A | 100.0% | N/A |
| Lake Pocotopaug | 4,875 | $118,150 | $310,300 | 40.6% | 4.3% |
| Stafford Springs | 4,649 | $59,028 | $230,300 | 25.3% | 12.4% |
Population Overview
Colchester is a small community located in Connecticut. The total population is 4,692. It ranks as the 68th most populous out of 214 Census-designated places in Connecticut.
Age Demographics
The median age in Colchester is 54.2 years. This is 32% higher than the state median of 41.1 years. Only 11.6% of residents are under 18, indicating fewer families with children. 13.6% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The median household income in Colchester is $86,760. This is 9% lower than the state median of $95,781. It is also 7% higher than the national median of $80,734. The poverty rate stands at 5.7%. This is 43% lower than the state poverty rate of 10.0%. The unemployment rate is 3.0%. This is 46% lower than the state rate of 5.6%. The median home value is $294,600. Housing costs are 20% lower than the state median of $366,900. The home-value-to-income ratio is 3.4x. 53.4% of occupied housing units are owner-occupied. This homeownership rate is 20% lower than the state average of 66.5%.
Race & Ethnicity
Colchester has a predominantly White (non-Hispanic) population, comprising 88.8% of all residents. Hispanic or Latino residents account for 3.6%. The Black or African American population (1.8%) is well below the state average of 9.8%. The Hispanic or Latino population (3.6%) is well below the state average of 18.3%.
Education
33.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 22% lower than the state rate of 42.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 95.6%.
Data Sources & Methodology
All demographic data for Colchester, Connecticut is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Connecticut state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 214 Census-designated places in Connecticut. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Colchester, Connecticut?
Colchester, Connecticut has a population of 4,692 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Colchester, CT?
The median household income in Colchester is $86,760, which is 7% higher than the national median of $80,734.
What is the poverty rate in Colchester, CT?
The poverty rate in Colchester is 5.7%. This means approximately 260 residents live below the federal poverty line.
What is the racial makeup of Colchester, Connecticut?
Colchester's population is 88.8% White, 1.8% Black, 3.6% Hispanic/Latino, and 2.7% Asian.
What is the median home value in Colchester, CT?
The median home value in Colchester is $294,600. The home-value-to-income ratio is 3.4x.
How educated is Colchester, Connecticut?
33.0% of adults (25+) in Colchester hold a bachelor's degree or higher, and 12.3% hold a graduate or professional degree.