Norwalk, CT · standard
ZIP Code 06856
Fairfield County, Connecticut - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 3
- 314/sq mi High-density area
National ZIP placement
Norwalk has 3 residents, placing it among the least populous of the 33,099 US ZIP codes with a reported population, at 314 people per square mile.
Source: USPS ZIP record + U.S. Census Bureau ZIP population. Rank compares ZIP 06856 against every US ZIP with a reported population; income/home-value percentiles are not available for this ZIP.
ZIP code 06856 is a sparsely populated ZIP (a standard USPS delivery area) in Norwalk, Fairfield County, Connecticut, home to just 3 residents across 0.0 square miles, a density of 314 people per square mile, in the New York time zone.
With fewer than 100 residents on file, this page keeps the Census figures below and skips the multi-chart expansion used on larger ZIPs. Small-N ACS estimates are already unstable enough without padding the page around them.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 06856, Norwalk, CT · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
3
Population
0.0
Area (sq mi)
314
People / sq mi
New York
Time Zone
standard
ZIP Type
What businesses operate in this ZIP?
Census Bureau data shows 24 business establishments in ZIP 06856, employing approximately 3,770 people with a combined annual payroll of $418,763,000.
24
Businesses
3,770
Employees
$418.8M
Annual Payroll
2
Industry Sectors
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 06856 vs 06854 →
Related Areas
Frequently Asked Questions
What county is ZIP code 06856 in?
ZIP code 06856 (Norwalk) is located in Fairfield County, Connecticut. Fairfield County contains multiple ZIP codes, see the full list at /counties/fairfield-ct.
What is the population of ZIP code 06856?
ZIP code 06856 in Norwalk, CT has a population of 3 according to the Census Bureau ACS 2023 estimates.
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What to do with ZIP 06856's numbers, next.
- See how ZIP 06856 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.