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US ZIP Code Profile

ZIP Code 06855
Norwalk, Connecticut

ZIP code 06855 is in Norwalk, located in Fairfield County, Connecticut, within the Bridgeport-Stamford-Norwalk metro area. Its 2020 Census population was 8,380. The estimated median adjusted gross income per tax return is $60,192, and about 14% of filers report $200,000 or more.

2020 Population
8,380
Census ZCTA
County
Fairfield
FIPS 09001
Median income (est.)
$60,192
IRS SOI 2022
Land Area
2.375 mi²
+ 2.66 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityNorwalk, CT
CountyFairfield County (FIPS 09001)
StateConnecticut (FIPS 09)
Metro Area (MSA)Bridgeport-Stamford-Norwalk, CT Metro Area (14860)
Census Region / DivisionNortheast Region · New England Division
Coordinates41.08424, -73.39499
Land / Water Area2.375 mi² land · 2.66 mi² water

02Income & Economics

Distribution of the 4,490 individual tax returns filed in 06855 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
25.4%
$25K–$50K
18.7%
$50K–$75K
14.5%
$75K–$100K
8.9%
$100K–$200K
18.7%
$200K+
13.8%
The $200,000+ bracket accounts for 57% of 06855's total adjusted gross income, from 14% of returns — a concentration that drives the gap between the median ($60,192) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 06855's IRS income metrics, 2020–2022.

Median income (2021→2022)
$60,192
▲ 6.8%
Filers earning $200K+
13.8%
▲ 1.5 pt
Total filers
4,490
▲ 0.4%
GET /zipc/v2/zipcodes/06855/soi?year=… $50K 2020 $56K 2021 $60K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 06855 ZCTA.

2000
7,969
 
2010
7,892
▼ -1.0%
2020
8,380
▲ +6.2%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 06855. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 06855

Norwalk and its immediate neighbors, sorted by distance.

3 mi
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Distance from 06855 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number085406
City AliasesEast Norwalk, Norwalk

07Frequently Asked Questions

What county is ZIP code 06855 in?

ZIP code 06855 is in Fairfield County, Connecticut (county FIPS code 09001).

What city is ZIP code 06855?

The primary USPS city for 06855 is Norwalk, CT.

What metro area (MSA) is 06855 in?

06855 is part of the Bridgeport-Stamford-Norwalk, CT Metro Area (MSA code 14860).

What is the population of ZIP code 06855?

The 2020 Census population of 06855 was 8,380 residents.

What is the median income in ZIP code 06855?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 06855 is about $60,192, with around 14% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.