Overview
- District ID
- ct-sd-021
- State
- Connecticut
- Chamber
- Upper chamber (state senate)
- District Code
- 021
- Land Area
- 71.7 sq mi
- Water Area
- 4.19 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Places
Showing all 6 places
Overlapping Congressional Districts
| Congressional district | Population in both | Share of this district's population | Share of the congressional district's population | Share of this district's land |
|---|
| CT District 3 | 77,591 | 75.2% | 10.8% | 55.4% |
| CT District 4 | 25,541 | 24.8% | 3.5% | 44.6% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 77,909
- Active Voters
- 74,555 (95.7%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 21,947 | 28.2% |
| Republican | 19,768 | 25.4% |
| Unaffiliated | 35,209 | 45.2% |
| Other parties | 985 | 1.3% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 153 (0.2%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 58,270 (74.8%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 42,713 (54.8%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 56,882 (73.0%) | 0 (0.0%) | 0 (0.0%) |
| 2017–2018 | 42,053 (54.0%) | 0 (0.0%) | 0 (0.0%) |
| 2015–2016 | 46,310 (59.4%) | 0 (0.0%) | 0 (0.0%) |
| 2013–2014 | 29,530 (37.9%) | 0 (0.0%) | 0 (0.0%) |
| 2011–2012 | 35,698 (45.8%) | 0 (0.0%) | 0 (0.0%) |
Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.
Browse the voter list for this district (premium access; sign-in required)
Source: Civitech voter file snapshot as of 11/04/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".
Demographics
- Total Population
- 106,954 (± 1,449)
- Median Age
- 45.1
- Median Household Income
- $113,541 (± $8,686)
- High School Graduate or Higher (age 25+)
- 93.7%
- Bachelor's Degree or Higher (age 25+)
- 42.1%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 20,531 | 19.2% |
| 18 to 64 | 64,222 | 60.0% |
| 65 and over | 22,201 | 20.8% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 15,928 | 14.9% |
| White, not Hispanic | 73,563 | 68.8% |
| Black, not Hispanic | 7,246 | 6.8% |
| Asian, not Hispanic | 5,420 | 5.1% |
| American Indian / Alaska Native, not Hispanic | 43 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 0 | 0.0% |
| Some other race, not Hispanic | 1,273 | 1.2% |
| Two or more races, not Hispanic | 3,481 | 3.3% |
Source: U.S. Census Bureau, American Community Survey 2020-2024 ACS 5-year estimates (tables B01001, B01002, B01003, B03002, B15003, B19013) for this state legislative district. Estimates are survey-based; ± figures are 90% margins of error.
Citizen Voting Age Population
- Total Citizen Population
- 101,852
- Citizen Voting Age Population (CVAP)
- 81,541
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 87,444 | 85.9% |
| Hispanic | 14,409 | 14.1% |
| White | 74,115 | 72.8% |
| Black | 6,739 | 6.6% |
| Asian | 4,306 | 4.2% |
| American Indian / Alaska Native | 44 | 0.0% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 99 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 72,122 | 88.4% |
| Hispanic | 9,416 | 11.5% |
| White | 62,635 | 76.8% |
| Black | 5,413 | 6.6% |
| Asian | 3,779 | 4.6% |
| American Indian / Alaska Native | 264 | 0.3% |
| Native Hawaiian / Pacific Islander | 0 | 0.0% |
| Two or More Races | 70 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
