Home > NY > Westchester County > Mamaroneck > Zip 10543

Zip Code 10543 — Mamaroneck, NY

ZIP Code 10543 is associated with Mamaroneck, NY, in Westchester County. The listed population estimate is 20,989; estimated density is 1,892.0 people per square mile. Among records with population estimates, it ranks #16 of 74 in Westchester County and #317 of 1,778 in NY.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.952740, -73.736450)

Data MetricLocal Statistic
Postal / Zip Code10543
Primary CityMamaroneck
State / ProvinceNY
CountyWestchester
Total Population20,989
Population Density1,892.0 people/sq mi
TimezoneAmerica/New_York

How 10543 Compares

MetricZIP 10543Westchester County recordsNY records
Population estimate20,989997,782 (sum)19,771,902 (sum)
Population Density1,892.0 /sq mi----
County population rank#16 of 74----
State population rank#317 of 1,778----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in NY

ZIP CodeCityDistancePopulation estimate
ZIP 10538Larchmont1.5 mi17,760
ZIP 10528Harrison1.9 mi14,091
ZIP 10804New Rochelle2.6 mi16,108
ZIP 10580Rye2.9 mi18,391
ZIP 10801New Rochelle3.5 mi42,754

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →