ZIP Code 10504 — Armonk, New York
📍 ZIP code 10504 is in Armonk, Westchester County, New York.
ZIP code 10504 is located in Armonk, Westchester County, New York. It is a standard zip code in the Eastern Time Zone with an estimated population of 7,853. The area code for zip code 10504 is 914.
ZIP Code 10504 Demographics
Population
Income & Economy
Housing
Education
Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).
Affordability & Profile: ZIP 10504 in Context
The median home in 10504 is valued at $1,150,700 against a median household income of $247,433, a price-to-income ratio of 4.7. That is far above the 2.9 median across the 1,572 New York ZIP codes with published housing data, and past the 3.0 ratio that marks an attainable market nationally, though it is among the more attainable ratios in the state. Within Westchester County, 10504 ranks 39 of 70 ZIPs on affordability (1 = lowest ratio); the county median ratio is 4.5. Renting takes 9.3% of median household income (median rent $1,910 a month), under the 30% cost-burden threshold.
10504 ranks 14 of 1,572 statewide on median household income and 40 of 1,572 on median home value; its income is far above the $148,390 Westchester County median. 95% of households own their home, above the 80% statewide ZIP median, making this a majority-owner ZIP. 81% of adults hold a bachelor's degree or higher, far above the 31% median, and the poverty rate is 4.2%, far below the 9.9% statewide ZIP median and among the lowest in the state. Unemployment stands at 2.8%.
With 488 residents per square mile across 16.1 square miles of land, 10504 is far denser than the statewide ZIP median of 197 (rank 605 of 1,572). This is a low-density pattern of large lots, small towns or scattered subdivisions.
Ratios and ranks are computed from the ACS figures above across the 1,572 New York ZIP codes with published housing data. See the 2026 New York affordability report for the statewide analysis and the methodology for definitions.
Nearby Zip Codes
Cities & Places Served
ZIP code 10504 primarily serves Armonk in Westchester County, New York.














