ZIP code 10504
Where is ZIP code 10504?
Armonk, New York
Westchester County · Standard ZIP code
ZIP code 10504 belongs to Armonk, New York in Westchester County. 10504 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area codes 203, 475 and 914. About 7,665 people live in the 10504 area, where the median household income is $250,001. The closest ZIP codes are 10610 (White Plains, 2 mi southwest), 10594 (Thornwood, 4 mi west) and 10570 (Pleasantville, 4.4 mi west).
| ZIP code | 10504 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Armonk |
| Also accepted | North Castle |
| State | New York (NY) |
| County | Westchester County |
| Time zone | Eastern Time · now |
| Area codes | 203, 475, 914 |
| Coordinates | 41.136, -73.7009 map |
| 3-digit prefix | 105 |
Population and income in 10504
| Population | 7,665 · higher than 66% of New York ZIP codes |
|---|---|
| People per square mile | 475 · higher than 62% of New York ZIP codes |
| Median age | 44.2 years · higher than 54% of New York ZIP codes |
| Men / women | 53% / 47% |
| Median household income | $250,001 · higher than 99% of New York ZIP codes |
| Income per person | $124,238 |
| Below the poverty line | 4.6% |
| Bachelor’s degree or higher | 80% of adults 25+ |
| Median home value | $1,243,100 · higher than 98% of New York ZIP codes |
| Median rent | $3,131 a month |
| Housing units | 2,629 |
| Households | 2,458 (3.07 people on average) |
| Owners / renters | 90% / 9.9% |
| Land area | 16.13 sq mi (plus 1.8 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 10504. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 10504
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 10610 | White Plains, NY | 2 mi SW | PO Box only |
| 10594 | Thornwood, NY | 4 mi W | Standard |
| 10570 | Pleasantville, NY | 4.4 mi W | Standard |
| 10514 | Chappaqua, NY | 4.4 mi NW | Standard |
| 10549 | Mount Kisco, NY | 5 mi N | Standard |
| 10506 | Bedford, NY | 5.1 mi NE | Standard |
| 10595 | Valhalla, NY | 5.3 mi SW | Standard |
| 10532 | Hawthorne, NY | 5.3 mi W | Standard |
| 06831 | Greenwich, CT | 6 mi S | Standard |
| 10604 | West Harrison, NY | 6 mi S | Standard |
| 10546 | Millwood, NY | 6.6 mi NW | Standard |
| 10577 | Purchase, NY | 6.8 mi S | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 10504 or measure the distance to another ZIP code.
How to address mail to 10504
123 MAIN ST
ARMONK NY 10504
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts NORTH CASTLE as the city name for 10504. Adding the 4-digit ZIP+4 code (10504-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 10504?
- 10504 is a Armonk, New York ZIP code. North Castle is also accepted as the city name.
- What county is 10504 in?
- ZIP code 10504 is in Westchester County, New York.
- What time zone is ZIP code 10504 in?
- 10504 is in the Eastern Time zone (America/New_York).
- What area code is 10504?
- Phone numbers in ZIP code 10504 use area codes 203, 475 and 914.
- What is the population of ZIP code 10504?
- About 7,665 people live in ZIP code 10504, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 10504?
- The median household income in 10504 is $250,001 a year, higher than 99% of New York ZIP codes.
- What ZIP codes are near 10504?
- The nearest ZIP codes to 10504 are 10610 (White Plains, 2 miles), 10594 (Thornwood, 4 miles), 10570 (Pleasantville, 4.4 miles) and 10514 (Chappaqua, 4.4 miles).