Zip Code 06851
Norwalk, Connecticut — Fairfield County
📍 ZIP code 06851 is in Norwalk, Fairfield County, Connecticut.
ZIP code 06851 is located in Norwalk, Fairfield County, Connecticut. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 28,591. The area code for ZIP code 06851 is 203.
Quick Answer
Zip code 06851 is in Norwalk, Connecticut (Fairfield County). It has a population of 28,591, median household income of $106,978, and median home value of $565,100.
Population
28,591
Income
$106,978
Home Value
$565,100
Climate
85°F / 22°F
About Zip Code 06851
Zip code 06851 is located in Norwalk, Connecticut, within Fairfield County. Home to approximately 28,591 residents, this area sits at an elevation of 76 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 203.
The median household income is $106,978 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $565,100, and the cost of living index is 165 (65% above the national average of 100).
Summers average a high of 85°F while winters drop to 22°F. The area receives about 52 in of rain and 34 in of snow annually. The zip code covers 7.6 square miles of land area and 0.1 square miles of water.
Key Statistics
28,591
$106,978
$565,100
Eastern (EST/EDT)
203
76 ft
7.6 sq mi
42.3
12,142
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Compare With Nearby Zip Codes
| Metric | 06851 | 06850 | 06880 | 06855 | 06854 | 06853 |
|---|---|---|---|---|---|---|
| City | Norwalk, CT | Norwalk, CT | Westport, CT | Norwalk, CT | Norwalk, CT | Norwalk, CT |
| Population | 28,591 | 19,774 | 27,364 | 8,028 | 31,753 | 3,229 |
| Median Income | $106,978 | $121,910 | $250,001 | $102,247 | $86,399 | $250,001 |
| Home Value | $565,100 | $562,900 | $1,244,200 | $492,400 | $453,400 | $1,402,000 |
| Cost of Living | 165 | 174 | 250 | 158 | 135 | 250 |
| Median Age | 42.3 | 40 | 45.7 | 41.4 | 36.8 | 45.1 |
Cost of Living
100 = National Average. Norwalk's cost of living is 65% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
5.3x
Demographics
Zip code 06851 has a population of 28,591 people with a median age of 42.3. There are 12,142 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Norwalk (06851) population trend from 2010 to 2024
↑ 22.3%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
85°F
22°F
52 in
34 in
Norwalk experiences warm summers with average highs around 85°F. Winters are cool with lows averaging 22°F. With 34 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$565,100
Median Household Income
$106,978
With 12,142 housing units across 7.6 square miles, 06851 has a housing density of 1,598 units per square mile. The home price-to-income ratio is 5.3x.
Location & Geography
Latitude
41.1382°
Longitude
-73.4015°
Land Area
7.6 sq mi
Water Area
0.1 sq mi
Nearby Zip Codes
Zip codes closest to 06851 (Norwalk, CT) with distances:
All Zip Codes in Norwalk, CT
Other zip codes serving Norwalk:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 06851's $106,978. A way to compare Norwalk to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 06851 (Norwalk, CT). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Norwalk, Connecticut?
Norwalk, Connecticut uses zip code 06851 along with 4 other zip codes.
What county is zip code 06851 in?
Zip code 06851 is located in Fairfield County, Connecticut.
What is the population of zip code 06851?
The population of zip code 06851 is 28,591 with a median age of 42.3.
Is 06851 in Norwalk, Connecticut?
Yes, zip code 06851 is in Norwalk, Fairfield County, Connecticut. The area code is 203.
Frequently Asked Questions
What city is zip code 06851 in?
Zip code 06851 is in Norwalk, Connecticut. It is part of Fairfield County and uses the Eastern (EST/EDT) timezone.
What is zip code 06851?
Zip code 06851 is a U.S. postal code in Norwalk, Connecticut (Fairfield County). It has a population of 28,591 and covers 7.6 square miles.
What is the population of zip code 06851?
The population of zip code 06851 (Norwalk, CT) is 28,591 with a median age of 42.3. There are approximately 12,142 housing units in this area.
What is the median income in zip code 06851?
The median household income in zip code 06851 (Norwalk, CT) is $106,978 per year. The cost of living index is 165 (100 = national average).
What is the average home price in zip code 06851?
The median home value in zip code 06851 (Norwalk, CT) is $565,100. The cost of living index is 165 compared to the national average of 100.
What county is zip code 06851 in?
Zip code 06851 is located in Fairfield County, Connecticut. The primary city is Norwalk.
What is the area code for zip code 06851?
Zip code 06851 in Norwalk, CT uses area code 203. It is located in the Eastern (EST/EDT) timezone.
Is zip code 06851 a good place to live?
Zip code 06851 (Norwalk, CT) has a cost of living index of 165 (100 = national average), a median household income of $106,978, and median home values of $565,100. The median age is 42.3. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 06851?
The cost of living index for zip code 06851 (Norwalk, CT) is 165, where 100 represents the national average. This area is above the national average. Median home value: $565,100.
What schools serve zip code 06851?
Zip code 06851 in Norwalk, Connecticut is served by the local school district of Fairfield County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.