🇺🇸 United States ZIP Code

STANDARD

06851

Norwalk

ZIP Code 06851 is a standard zip code serving Norwalk, Norwalk, Connecticut (CT), in Western Connecticut County, United States. It has an estimated population of 26,703 with a median household income of $82,226. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Connecticut (CT)
County: Western Connecticut
City: Norwalk
Timezone: America/New_York

Coordinates

Latitude: 41.132300
Longitude: -73.405800

Geographic Details

Land Area: 7.63 mi²
Water Area: 0.06 mi²
Population Density: 3500.0 people per mi² (90th percentile)
Bounding Box: 41.171260°N, 41.107557°S, -73.380148°E, -73.429202°W

With 26,703 residents spread across 7.63 square miles, this area has a population density of 3500.0 people per square mile.

Demographics

26,703

Population

85th percentile

$82,226

Median Income

90th percentile

$429,500

Median Home Value

90th percentile

7.63 mi²

Land Area

The median household income in 06851 is $82,226, and the median home value is $429,500. This places the area in the top 25% nationally for household income.

Housing

11,198

Total Units

10,548

Occupied Units

94.2%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Norwalk, CT.

06850

Norwalk

06852

Norwalk

06853

Norwalk

06854

Norwalk

06855

Norwalk

06856

Norwalk

06857

Norwalk

06858

Norwalk

06860

Norwalk

Similar ZIP Codes in Connecticut

ZIP codes with similar median household income in Connecticut.

06242

Eastford

$80,357

06759

Litchfield

$84,306

06103

Hartford

$92,321

06339

Ledyard

$81,368

06417

Deep River

$71,500

06016

Broad Brook

$76,599

06424

East Hampton

$92,100

06811

Danbury

$84,092

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.