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About this map

Residents per square mile of land (water excluded). Under 50 is rural, a few hundred is small-town, 2,500+ is urban, and 10,000+ is big-city dense.

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024).

U.S.
95/sq mi
Connecticut
749/sq mi
Rankings
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Top and bottom zip codes in Connecticut

Zip codes with 1,000+ residents

Most densely populated zip codes

See all
  1. 106901Stamford21,684/sq mi
  2. 206510New Haven17,041/sq mi
  3. 306080Suffield12,150/sq mi
  4. 406608Bridgeport11,815/sq mi
  5. 506605Bridgeport11,343/sq mi
  6. 606710Waterbury10,260/sq mi
  7. 706604Bridgeport10,070/sq mi
  8. 806511New Haven9,415/sq mi
  9. 906606Bridgeport9,335/sq mi
  10. 1006519New Haven8,821/sq mi

Most sparsely populated zip codes

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  1. 106058Norfolk36/sq mi
  2. 206031Falls Village39/sq mi
  3. 306021Colebrook47/sq mi
  4. 406069Sharon50/sq mi
  5. 506242Eastford52/sq mi
  6. 606754Cornwall Bridge55/sq mi
  7. 706068Salisbury69/sq mi
  8. 806757Kent70/sq mi
  9. 906793Washington71/sq mi
  10. 1006384Voluntown71/sq mi

Population density by county in Connecticut

  1. 1Greater Bridgeport Planning Region2,349/sq mi
  2. 2South Central Connecticut Planning Region1,554/sq mi
  3. 3Western Connecticut Planning Region1,178/sq mi
  4. 4Naugatuck Valley Planning Region1,102/sq mi
  5. 5Capitol Planning Region951/sq mi
  6. 6Southeastern Connecticut Planning Region468/sq mi
  7. 7Lower Connecticut River Valley Planning Region415/sq mi
  8. 8Northeastern Connecticut Planning Region174/sq mi
  9. 9Northwest Hills Planning Region144/sq mi

Questions about this map

Which zip code has the highest population density in Connecticut?

Among zip codes with at least 1,000 residents, 06901 (Stamford, CT) has the highest: 21,684/sq mi.

Which zip code has the lowest population density in Connecticut?

06058 (Norfolk, CT) has the lowest: 36/sq mi.

What is the population density for the United States?

95/sq mi; in Connecticut it is 749/sq mi.

Where does this data come from?

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024). Residents per square mile of land (water excluded). Under 50 is rural, a few hundred is small-town, 2,500+ is urban, and 10,000+ is big-city dense.

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