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Zip Code 06851 — Norwalk, CT

06851 is a ZIP Code associated with Norwalk, CT, located within Western Connecticut. The postal region supports an estimated population of 27,865 residents across Data Pending housing units, with a population density of 1,399.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (41.139480, -73.403870)

Data MetricLocal Statistic
Postal / Zip Code06851
Primary CityNorwalk
State / ProvinceCT
CountyWestern Connecticut
Total Population27,865
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1,399.7 people/sq mi
TimezoneAmerica/New_York

How 06851 Compares

MetricZIP 06851Western Connecticut CountyCT State Average
Population27,865627,0793,624,508
Median IncomeData PendingN/AN/A
Population Density1,399.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 06850Norwalk2.2 mi19,692N/A
Zip 06880Westport3.0 mi27,583N/A
Zip 06855Norwalk3.5 mi9,351N/A
Zip 06854Norwalk3.6 mi32,118N/A
Zip 06897Wilton5.0 mi18,777N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →