Uniondale, NY · standard
ZIP Code 11556
Nassau County, New York - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 17
- 103/sq mi Moderate-density area
National ZIP placement
Uniondale has 17 residents, placing it among the least populous of the 33,099 US ZIP codes with a reported population, at 103 people per square mile.
Source: USPS ZIP record + U.S. Census Bureau ZIP population. Rank compares ZIP 11556 against every US ZIP with a reported population; income/home-value percentiles are not available for this ZIP.
ZIP code 11556 is a sparsely populated ZIP (a standard USPS delivery area) in Uniondale, Nassau County, New York, home to just 17 residents across 0.2 square miles, a density of 103 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 11556, Uniondale, NY · 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
17
Population
0.2
Area (sq mi)
103
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 11556?
-
Median Age
-
Male
-
Female
-
Foreign-Born
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
0
Total Housing Units
0
Occupied Units
0
Vacant Units
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 157 business establishments in ZIP 11556, employing approximately 3,287 people with a combined annual payroll of $384,435,000.
157
Businesses
3,287
Employees
$384.4M
Annual Payroll
13
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 11556 vs 11553 →
Related Areas
Frequently Asked Questions
What county is ZIP code 11556 in?
ZIP code 11556 (Uniondale) is located in Nassau County, New York. Nassau County contains multiple ZIP codes, see the full list at /counties/nassau-ny.
What is the population of ZIP code 11556?
ZIP code 11556 in Uniondale, NY has a population of 17 according to the Census Bureau ACS 2023 estimates.
Take this with you
What to do with ZIP 11556's numbers, next.
- See how ZIP 11556 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Uniondale, NY ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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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.