Mill Plain, Connecticut Demographics & Population 2026
During the 2020–2024 ACS period, Mill Plain, Connecticut had a total population of 2,033, the 120th largest community in Connecticut, with a median household income of $200,380, which is 109% higher than the state average. The poverty rate is 6.1%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 109% above the state average — one of the wealthiest communities in Connecticut.
- Unemployment rate of 15.9% is notably above the national average.
Mill Plain Quick Facts
How Mill Plain 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 | 1,980 | 2,033 | +2.7% |
| Median household income | $190,250 | $200,380 | +5.3% |
| Median home value | $806,600 | $818,900 | +1.5% |
How Mill Plain 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+)
Mill Plain Rankings in Connecticut
Explore Connecticut Rankings
Cities Similar to Mill Plain
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Ridgebury | 2,060 | $216,944 | $906,900 | 76.6% | 4.3% |
| Madison Center | 1,981 | $178,194 | $841,800 | 73.3% | 8.2% |
| Georgetown | 1,932 | $181,364 | $790,400 | 61.0% | 0.4% |
| Newtown | 1,898 | $164,821 | $523,200 | 66.8% | 2.0% |
| Crystal Lake | 2,024 | $143,882 | $361,800 | 45.9% | 1.7% |
Population Overview
Mill Plain is a small community located in Connecticut. The total population is 2,033. It ranks as the 120th most populous out of 214 Census-designated places in Connecticut.
Age Demographics
The median age in Mill Plain is 43.8 years. This is 7% higher than the state median of 41.1 years.
Economy, Income & Housing
The median household income in Mill Plain is $200,380. This is 109% higher than the state median of $95,781. It is also 148% higher than the national median of $80,734. The poverty rate stands at 6.1%. This is 39% lower than the state poverty rate of 10.0%. The unemployment rate is 15.9%. This is 184% higher than the state rate of 5.6%. The median home value is $818,900. Housing costs are 123% higher than the state median of $366,900. The home-value-to-income ratio is 4.1x. 94.5% of occupied housing units are owner-occupied. This homeownership rate is 42% higher than the state average of 66.5%.
Race & Ethnicity
Mill Plain has a predominantly White (non-Hispanic) population, comprising 91.4% of all residents. Hispanic or Latino residents account for 6.2%. The Hispanic or Latino population (6.2%) is well below the state average of 18.3%. The Asian population (0.6%) is well below the state average of 4.8%.
Education
71.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 69% higher 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 98.7%. Notably, 43.8% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Mill Plain, 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.
Free data download: Get all Connecticut city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Mill Plain, Connecticut?
Mill Plain, Connecticut has a population of 2,033 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Mill Plain, CT?
The median household income in Mill Plain is $200,380, which is 148% higher than the national median of $80,734.
What is the poverty rate in Mill Plain, CT?
The poverty rate in Mill Plain is 6.1%. This means approximately 124 residents live below the federal poverty line.
What is the racial makeup of Mill Plain, Connecticut?
Mill Plain's population is 91.4% White, 0.0% Black, 6.2% Hispanic/Latino, and 0.6% Asian.
What is the median home value in Mill Plain, CT?
The median home value in Mill Plain is $818,900. The home-value-to-income ratio is 4.1x.
How educated is Mill Plain, Connecticut?
71.8% of adults (25+) in Mill Plain hold a bachelor's degree or higher, and 43.8% hold a graduate or professional degree.