East Haddam, CT 06423 ZIP Code Profile

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East Haddam, CT

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ZIP Code 06423: Basic Data & USPS Preferred City Name

Preferred Name, USPS
East Haddam, CT 06423

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 121
  • Single Family Addresses: 1,884
  • Multi-Family Addresses: 0
  • County: Middlesex County
  • Centroid: Latitude 41.473, Longitude -72.4
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


06423 ZIP Code Map

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East Haddam, CT 06423 Data & Demographics (As of July 1, 2017)


Total Population 5,071
Daytime Population: Workers 837
Daytime Population: Residents 2,405
Total Daytime Population (TDP) 3,242
Ratio TDP/Total Population1 0.64
Population in Households 5,044
Population in Familes 4,292
Population in Group Qrtrs 27
Population Density2 139
Diversity Index3 14


Median Household Income $87,675
Average Household Income $110,480
Per Capita Income $42,577


Total Housing Units 2,339 (100%)
Owner Occupied HU 1,695 (72.5%)
Renter Occupied HU 253 (10.8%)
Vacant Housing Units 391 (16.7%)
Median Home Value $335,672
Average Home Value $385,487


Total Households 1,948
Average Household Size 2.59
Family Households 1,422
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.22% 0.02%
Households 0.09% -0.07%
Families 0.01% -0.13%
Median Household Income   2.46%
Per Capita Income   2.28%

East Haddam, CT 06423 - Peer Comparisons by Rank and Percentile

The table below compares 06423 to the other 275 ZIP Codes in Connecticut by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 184 33rd
Population Density # 236 15th
Diversity Index # 238 14th
Median Household Income # 105 62nd
Per Capita Income # 124 55th

Additional comparisons and rankings can be made with a VERY EASY TO USE Connecticut Census Data Comparison Tool.

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