Connecticut County Map With Cities
By Marko Visic · Updated Oct 5, 2026
Connecticut has 9 planning regions, covering 4,843 square miles of land. The Census Bureau estimates its population at 3,688,496 as of July 1, 2025. The largest planning region by land area is also the most populous, Capitol Planning Region; the least populous is Northeastern Connecticut Planning Region.
Tap or click any planning region for details. Need a printable version? Blank Connecticut map (PDF/PNG/SVG).
Connecticut has 9 planning regions, which replaced its 8 counties for Census Bureau statistics in 2022.
All 9 Connecticut planning regions
| Planning region | FIPS code | Population (July 1, 2025) ▼ | Change since April 2020 | Land area (sq mi) | People per sq mi | Median household income (2020–2024) |
|---|---|---|---|---|---|---|
| Capitol Planning Region | 09110 | 994,115 | +1.7% | 1,027 | 968 | $93,394 |
| Western Connecticut Planning Region | 09190 | 640,482 | +3.2% | 532 | 1,204 | $128,188 |
| South Central Connecticut Planning Region | 09170 | 578,741 | +1.4% | 367 | 1,576 | $88,197 |
| Naugatuck Valley Planning Region | 09140 | 463,349 | +2.9% | 413 | 1,122 | $86,191 |
| Greater Bridgeport Planning Region | 09120 | 337,697 | +3.7% | 140 | 2,409 | $89,667 |
| Southeastern Connecticut Planning Region | 09180 | 284,015 | +1.3% | 598 | 475 | $86,586 |
| Lower Connecticut River Valley Planning Region | 09130 | 177,311 | +1.8% | 424 | 418 | $104,428 |
| Northwest Hills Planning Region | 09160 | 114,690 | +2.0% | 787 | 146 | $93,551 |
| Northeastern Connecticut Planning Region | 09150 | 98,096 | +2.9% | 554 | 177 | $90,589 |
FIPS code: the Census Bureau’s five-digit county ID, a two-digit state code plus a three-digit county code. It is not a ZIP code.
How many planning regions does Connecticut have?
Connecticut abolished county government in 1960 — the legacy counties still appear on maps and in property records but have no administrative role. In 2022 the US Census Bureau adopted the state's 9 planning regions as its county-equivalents for federal statistics, and this page reflects that current classification. Planning regions are functionally identical to counties in every other state for Census purposes.
The largest planning region by land area is also the most populous: Capitol Planning Region, 1,027 square miles and 994,115 residents — a density of 968 people per square mile. At the other end of the scale, Northeastern Connecticut Planning Region has 98,096 residents.
Connecticut’s capital is Hartford, while the largest city is Bridgeport.
Related resources
Download a printable outline of Connecticut’s planning region boundaries from our blank map of Connecticut page — available in SVG, PNG, and PDF.
Use the What County Am I In? tool to detect which Connecticut planning region a GPS location or address falls in, or the Address to County Lookup for batch input.
For demographic radius analysis, the Find ZIP Codes in Radius and Population Within Radius tools let you draw a circle around any Connecticut address and see every ZIP code and the total population inside.
Two SimpleMapLab studies cover Connecticut specifically: the 100-mile radius around Hartford measures how much of the state lives within 100 miles of its capitol, and the loneliest town in Connecticut ranks the state’s most isolated inhabited place. The county-counts blog post puts Connecticut’s 9 planning regions in national context.
Frequently asked questions
- County Population Totals, Vintage 2025: estimates for July 1, 2025, released March 2026
- Gazetteer Files, 2026: county land and water area
- American Community Survey 5-Year Estimates, 2020–2024: median household income (table B19013)
- County boundaries on the map: US Atlas TopoJSON build of the US Census Bureau’s TIGER/Line shapefiles. All figures are US Census Bureau data in the public domain.