Zip Code 06855 — Norwalk, CT

ZIP Code 06855 is associated with Norwalk, CT, in Western Connecticut County. The listed population estimate is 9,351; estimated density is 1,461.8 people per square mile. Among records with population estimates, it ranks #24 of 34 in Western Connecticut County and #134 of 285 in CT.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.089220, -73.396150)

Data MetricLocal Statistic
Postal / Zip Code06855
Primary CityNorwalk
State / ProvinceCT
CountyWestern Connecticut
Total Population9,351
Population Density1,461.8 people/sq mi
TimezoneAmerica/New_York

How 06855 Compares

MetricZIP 06855Western Connecticut County recordsCT records
Population estimate9,351627,079 (sum)3,624,508 (sum)
Population Density1,461.8 /sq mi----
County population rank#24 of 34----
State population rank#134 of 285----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in CT

ZIP CodeCityDistancePopulation estimate
ZIP 06854Norwalk1.8 mi32,118
ZIP 06853Norwalk2.6 mi3,171
ZIP 06851Norwalk3.5 mi27,865
ZIP 06850Norwalk3.5 mi19,692
ZIP 06820Darien4.5 mi21,936

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 →