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City ZIP codes · Connecticut

Norwalk, CT ZIP Codes

10 ZIP codes use the postal name Norwalk, Connecticut (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 5 residential and 5 for PO boxes or a single organization. Median household income runs from $86,679 in 06854 to $250,000 or more in 06853 (Census Bureau, ACS 2020-2024). Norwalk's most populous ZIP code is 06854, with 32,118 people (ACS 2020-2024); 100% of its land is in the city of Norwalk.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Norwalk's ZIP codes?

06850: $124k median household income06851: $111k median household income06853: $250k+ median household income06854: $87k median household income06855: $106k median household income068550685006854068510685306850: $124k median household income06851: $111k median household income06853: $250k+ median household income06854: $87k median household income06855: $106k median household income068550685006854068510685306850: $124k median household income06851: $111k median household income06853: $250k+ median household income06854: $87k median household income06855: $106k median household income0685506850068540685106853
The 5 residential ZIP codes named Norwalk, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Norwalk's ZIP codes?

The highest median household income is in 06853 ($250,000 or more), the lowest in 06854 ($86,679). Home values run from $460,500 in 06854 to $1,610,200 in 06853.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 5 residential ZIP codes of Norwalk

Residential ZIP codes with the postal name Norwalk, CT, largest first (ACS 2020-2024); sort by any column
County
06854 Fairfield County 32,118 6,679 $87k $461k
06851 Fairfield County 27,865 3,625 $111k $587k
06850 Fairfield County 19,692 2,904 $124k $581k
06855 Fairfield County 9,351 3,786 $106k $511k
06853 Fairfield County 3,171 2,629 $250k+ $1.61M

Download the 10 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Norwalk

5 ZIP codes named Norwalk have no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Norwalk, CT: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
06852Fairfield County
06856Fairfield County
06857Fairfield County
06858Fairfield County
06860Fairfield County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Norwalk's ZIP codes reach?

Norwalk's residential ZIP codes lie in Fairfield County.

Which first three digits do Norwalk's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Norwalk starts with 068.

Three-digit prefixes of Norwalk's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Norwalk's
PrefixSectional centerHereAll codes
068 Westchester, NY (SCF 105) 10 44

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.