# Counties in Connecticut by population density, 2025

All 9 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population_density`
- Unit: inhabitants per km²
- Definition: Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.
- Source: U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km² (https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/)
- Retrieved: 2026-10-09
- Citation: U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.
- Web page: https://invokely.ai/rankings/population-density/connecticut-counties
- CSV: https://invokely.ai/download/rankings/population-density/connecticut-counties.csv

| Rank | Place | inhabitants per km² |
|---:|---|---:|
| 1 | Greater Bridgeport Planning Region | 930 |
| 2 | South Central Connecticut Planning Region | 608.4 |
| 3 | Western Connecticut Planning Region | 464.7 |
| 4 | Naugatuck Valley Planning Region | 433.4 |
| 5 | Capitol Planning Region | 373.6 |
| 6 | Southeastern Connecticut Planning Region | 183.3 |
| 7 | Lower Connecticut River Valley Planning Region | 161.4 |
| 8 | Northeastern Connecticut Planning Region | 68.4 |
| 9 | Northwest Hills Planning Region | 56.3 |