Public Data Map Platform · ACS 2024 5-year
Connecticut County Population
Explore ACS 2024 five-year total-population estimates across all 9 Connecticut counties and county equivalents.
Source: U.S. Census Bureau, American Community Survey. Geography: Census TIGER/Line county boundaries (2025).
Explore counties
Map and measure
Loading interactive county map…
Connecticut counties
Total population
Accessible data view
County ranking
9 counties · default order follows the validated publication bundle.
Total population distribution
Interactive distribution will load with the map.
| 977,290 | |
| 329,259 | |
| 175,822 | |
| 454,969 | |
| 96,312 | |
| 113,216 | |
| 570,598 | |
| 279,971 | |
| 627,071 |
Verified publication bundle
Downloads and provenance
Read before comparing
Method and limitations
The displayed total is the ACS Data Profile DP05_0001E direct total-population estimate.
This is a five-year ACS survey estimate, not a decennial census count. DP05_0001M is the ACS 90-percent-confidence MOE. null estimate with source state valid, missing, suppressed, or invalid; zero remains valid. Five equal-width color bands span the valid values in this state; colors are not comparable across states.
See the ACS user notes and the downloadable provenance file for definitions, source fields, inputs, retrieval receipt, and checksums.