State 09 · CT

Connecticut county map

Connecticut has 9 planning regions. Capitol Planning Region is both the largest by land, at 1,027 square miles, and the most populous, with 991,508 residents.

Population 2024
3,675,069
#29 of 51
Land area
4,842 sq mi
#48 of 51
Density
758.9 / sq mi
#5 of 51
Planning regions
9
Capital: Hartford
N
Hartford 41.76° N, 72.68° W

Map of all 9 planning regions in Connecticut

Every planning region is labeled on Census 2024 boundaries. Download it as a PDF to print, a PNG, or an editable SVG. For blank, colored or city versions, see the printable Connecticut map sheets.

CapitolGreater BridgeportLower Connecticut River ValleyNaugatuck ValleyNortheastern ConnecticutNorthwest HillsSouth Central ConnecticutSoutheastern ConnecticutWestern ConnecticutConnecticut county map. Online Map Tools (onlinemaptools.com), Census 2024 boundaries, free to reuse with credit.
9 units labeled. The orange dot marks the capital.

Connecticut population and land area

Connecticut had 3,675,069 residents in the Census Vintage 2024 estimates, the sum of its planning regions. That ranks 29th of the 50 states and DC. Its 4,842 square miles of land rank 48th. Connecticut averages 758.9 people per square mile of land, 7.9 times the national figure of 96.3. By density it ranks 5th.

Population, 2024
3,675,06929th of 51
Land area
4,842 sq mi48th of 51
Density
758.9 per sq mi5th of 51
Number of planning regions
9
Capital
Hartford41.764° N, 72.682° W
State FIPS code
09

Connecticut planning regions by population, density and income

Each shape is shaded by quintile, darker for higher values. Switch the measure above the map. Select a shape to open that county's page. The pin marks the capital, Hartford.

South Central Connecticut Planning Region: 1,570Capitol Planning Region: 965Greater Bridgeport Planning Region: 2,395Southeastern Connecticut Planning Region: 472Western Connecticut Planning Region: 1,197Naugatuck Valley Planning Region: 1,120Northwest Hills Planning Region: 145Lower Connecticut River Valley Planning Region: 419Northeastern Connecticut Planning Region: 176
Density
  1. < 176
  2. 176+
  3. 472+
  4. 965+
  5. 1,197+
no data

Largest county in Connecticut by land area

Capitol Planning Region ranks first at 1,027 square miles and Greater Bridgeport Planning Region last at 140 square miles. The top value is 7.3 times the bottom one.

  1. 01Capitol Planning Region1,027
  2. 02Northwest Hills Planning Region787
  3. 03Southeastern Connecticut Planning Region598
  4. 04Northeastern Connecticut Planning Region554
  5. 05Western Connecticut Planning Region532
  6. 06Lower Connecticut River Valley Planning Region424
  7. 07Naugatuck Valley Planning Region413
  8. 08South Central Connecticut Planning Region367
  9. 09Greater Bridgeport Planning Region140

Most populous county in Connecticut

Capitol Planning Region ranks first at 991,508 residents and Northeastern Connecticut Planning Region last at 97,701 residents. The top value is 10 times the bottom one.

  1. 01Capitol Planning Region991,508
  2. 02Western Connecticut Planning Region637,013
  3. 03South Central Connecticut Planning Region576,718
  4. 04Naugatuck Valley Planning Region462,220
  5. 05Greater Bridgeport Planning Region335,666
  6. 06Southeastern Connecticut Planning Region282,602
  7. 07Lower Connecticut River Valley Planning Region177,540
  8. 08Northwest Hills Planning Region114,101
  9. 09Northeastern Connecticut Planning Region97,701

Least populous county in Connecticut

The smallest populations, fewest first. Estimates for small counties carry more uncertainty than those for large ones.

  1. 01Northeastern Connecticut Planning Region97,701
  2. 02Northwest Hills Planning Region114,101
  3. 03Lower Connecticut River Valley Planning Region177,540
  4. 04Southeastern Connecticut Planning Region282,602
  5. 05Greater Bridgeport Planning Region335,666
Log scale, so small counties stay visible next to the largest.

Most densely populated county in Connecticut

Greater Bridgeport Planning Region ranks first at 2,394.5 people per square mile and Northwest Hills Planning Region last at 145.0 people per square mile. The top value is 17 times the bottom one.

  1. 01Greater Bridgeport Planning Region2,394.5
  2. 02South Central Connecticut Planning Region1,570.4
  3. 03Western Connecticut Planning Region1,197.1
  4. 04Naugatuck Valley Planning Region1,119.8
  5. 05Capitol Planning Region965.1
  6. 06Southeastern Connecticut Planning Region472.5
  7. 07Lower Connecticut River Valley Planning Region418.6
  8. 08Northeastern Connecticut Planning Region176.4
  9. 09Northwest Hills Planning Region145.0
People per square mile of land, log scale.

Highest median household income in Connecticut

Western Connecticut Planning Region ranks first at $121,285 and South Central Connecticut Planning Region last at $80,953. The two are within a factor of 1.50.

  1. 01Western Connecticut Planning Region$121,285
  2. 02Lower Connecticut River Valley Planning Region$99,807
  3. 03Greater Bridgeport Planning Region$92,858
  4. 04Northwest Hills Planning Region$91,206
  5. 05Capitol Planning Region$90,965
  6. 06Northeastern Connecticut Planning Region$88,129
  7. 07Southeastern Connecticut Planning Region$82,733
  8. 08Naugatuck Valley Planning Region$81,392
  9. 09South Central Connecticut Planning Region$80,953

Towns and cities in Connecticut

The Census Vintage 2024 subcounty estimates list 27 incorporated places in Connecticut with 1,000 or more residents, holding 1,437,860 people together, or 39% of the state total. 21 of them have 5,000 or more. The northernmost is Torrington at 41.834° N and the southernmost is Stamford at 41.080° N. Among places of 5,000+, Groton grew fastest from July 2020 to July 2024, by 8.5%.

  1. 01Bridgeport151,599
  2. 02Stamford139,134
  3. 03New Haven137,562
  4. 04Hartford122,129
  5. 05Waterbury115,908
  6. 06Norwalk93,661
  7. 07Danbury88,692
  8. 08New Britain75,871
  9. 09Bristol62,195
  10. 10Meriden60,849
  11. 11West Haven55,379
  12. 12Milford51,004
Largest incorporated places, Vintage 2024 estimates.

Hartford, the capital

100.0% of Connecticut's place population, 1,437,860 of 1,437,860 people, lives in places within 100 miles of Hartford. That ranks 1st of 51 for how central the capital is.

See all states in the capital radius ranking and the most remote towns ranking. Sunrise and sunset times for Hartford, month by month, are on the Hartford daylight page.

States bordering Connecticut

Connecticut borders 3 states or districts. The nearest neighboring capital is Providence, 65 miles E of Hartford in a straight line.

UTM zones in Connecticut

The internal points of Connecticut's planning regions fall in UTM zones 18, 19. Zones are 6 degrees of longitude wide, numbered from 180° W: zone = floor((longitude + 180) / 6) + 1. Because Connecticut spans 2 zones, no single UTM zone covers the whole state.

All 9 planning regions in Connecticut

Sort by any column. The small orange number marks the top 3 in the state by population.

FIPS
09110Capitol Planning Region991,508#11,027965.1$90,965
09190Western Connecticut Planning Region637,013#25321,197.1$121,285
09170South Central Connecticut Planning Region576,718#33671,570.4$80,953
09140Naugatuck Valley Planning Region462,2204131,119.8$81,392
09120Greater Bridgeport Planning Region335,6661402,394.5$92,858
09180Southeastern Connecticut Planning Region282,602598472.5$82,733
09130Lower Connecticut River Valley Planning Region177,540424418.6$99,807
09160Northwest Hills Planning Region114,101787145.0$91,206
09150Northeastern Connecticut Planning Region97,701554176.4$88,129

Download all 9 planning regions as CSV

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 Gazetteer, places
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.