Norwalk, CT 06851 ZIP Code Profile

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Norwalk, CT

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ZIP Code 06851: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Norwalk, CT 06851

  • ZIP Code Type: STANDARD
  • County: Fairfield County
  • Centroid: Latitude 41.133, Longitude -73.403
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 1,228
  • PO Box Addresses: 0
  • Residential Addresses: 11,128
    • Multi-Family Addresses: 2,164
    • Single Family Addresses: 8,964

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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06851 ZIP Code Map

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Norwalk, CT 06851 Data & Demographics (As of July 1, 2017)


Total Population 28,412
Daytime Population: Workers 18,081
Daytime Population: Residents 12,512
Total Daytime Population (TDP) 30,593
Ratio TDP/Total Population1 1.08
Population in Households 28,117
Population in Familes 22,243
Population in Group Qrtrs 295
Population Density2 3,667
Diversity Index3 64


Median Household Income $88,021
Average Household Income $119,475
Per Capita Income $46,938


Total Housing Units 11,745 (100%)
Owner Occupied HU 7,708 (65.6%)
Renter Occupied HU 3,389 (28.9%)
Vacant Housing Units 648 ( 5.5%)
Median Home Value $452,061
Average Home Value $485,826


Total Households 11,097
Average Household Size 2.53
Family Households 6,996
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 0.75% 0.73%
Households 0.55% 0.64%
Families 0.46% 0.56%
Median Household Income   2.78%
Per Capita Income   2.84%

Norwalk, CT 06851 - Peer Comparisons by Rank and Percentile

The table below compares 06851 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 # 36 87th
Population Density # 34 88th
Diversity Index # 48 83rd
Median Household Income # 104 63rd
Per Capita Income # 85 69th

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

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