Stonington, CT 06378 ZIP Code Profile

Related Place Profiles:
Lords Point, CT | Stonington, CT

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ZIP Code 06378: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Stonington, CT 06378

Not Acceptable, USPS
Lords Point, CT 06378
Shawondassee, CT 06378

  • ZIP Code Type: STANDARD
  • County: New London County
  • Centroid: Latitude 41.344, Longitude -71.911
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 336
  • PO Box Addresses: 210
  • Residential Addresses: 2,611
    • Multi-Family Addresses: 58
    • Single Family Addresses: 2,553

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

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06378 ZIP Code Map

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Stonington, CT 06378 Data & Demographics (As of July 1, 2017)


Total Population 5,439
Daytime Population: Workers 2,199
Daytime Population: Residents 2,309
Total Daytime Population (TDP) 4,508
Ratio TDP/Total Population1 0.83
Population in Households 5,437
Population in Familes 4,272
Population in Group Qrtrs 2
Population Density2 260
Diversity Index3 14


Median Household Income $100,056
Average Household Income $134,799
Per Capita Income $59,838


Total Housing Units 3,095 (100%)
Owner Occupied HU 1,813 (58.6%)
Renter Occupied HU 601 (19.4%)
Vacant Housing Units 681 (22.0%)
Median Home Value $430,591
Average Home Value $521,870


Total Households 2,414
Average Household Size 2.25
Family Households 1,505
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 -0.16% 0.01%
Households -0.2% -0.03%
Families -0.31% -0.12%
Median Household Income   1.6%
Per Capita Income   2.56%

Stonington, CT 06378 - Peer Comparisons by Rank and Percentile

The table below compares 06378 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 # 180 35th
Population Density # 203 26th
Diversity Index # 242 13th
Median Household Income # 62 78th
Per Capita Income # 29 90th

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

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