PlainZIP

Armonk, NY · standard

ZIP Code 10504

Westchester County, New York - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

7,987
189/sq mi
$250,001
Median income
$1,243,100
Median home value
80.2%
Bachelor's or higher

The verdict

Armonk pairs a top-decile household income with top-decile home values, in a rural, homeowner-dominated area.

Top 1%
household income, US ZIPs
Top 1%
home value, US ZIPs
189
people per sq mi
90%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 10504 against every reporting US ZIP.

ZIP code 10504 is a mid-sized community (a standard USPS delivery area) in Armonk, Westchester County, New York, home to 7,987 residents across 42.3 square miles, a density of 189 people per square mile, in the New York time zone.

ZIP 10504 skews affluent, with a median household income of $250,001 (170% above the New York average), while per-capita income is $124,238. The poverty rate stands at 4.6% and the unemployment rate at 2.5%. Housing costs here run $1,243,100 for a typical home value (229% above the state average), with rent averaging $3,131 a month; 90.1% of homes are owner-occupied.

This is a highly-educated ZIP: 80.2% of adults hold a bachelor's degree or higher, the median age is 44.2, and the average commute is 38 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Westchester County, so you can benchmark 10504 against its immediate geography rather than a national average alone.

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 →

Top industries in ZIP 10504

Top 5 sectors by establishment count in Armonk, NY

Which industries have the most business establishments in ZIP 10504.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

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 10504, Armonk, 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

7,987

Population

42.3

Area (sq mi)

189

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 10504?

44.2

Median Age

53.4%

Male

46.6%

Female

15.5%

Foreign-Born

White 73.1%
African American 2.0%
Asian 6.7%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 8.5%
Hispanic or Latino 13.4%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$250,001

Median Household Income

+170% vs state

$124,238

Per Capita Income

4.6%

Poverty Rate

2.5%

Unemployment Rate

37.9 min

Mean Commute Time

How ZIP 10504 ranks nationally

Armonk, NY household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$250,001 Top 1% higher than 99% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). Below this entry. $160,000–$180,000: 364 US ZIPs (1%). Below this entry. $180,000–$200,000: 186 US ZIPs (1%). Below this entry. $200,000–$220,000: 324 US ZIPs (1%). This entry sits in this band. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 87.1%
Bachelor's Degree or Higher 80.2%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

2,629

Total Housing Units

2,458

Occupied Units

171

Vacant Units

3.07

Avg Household Size

Occupancy Type

Owner 90.1%
Renter 9.9%

$1,243,100

Median Home Value

+229% vs state

$3,131

Median Rent

1977

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+22.7%

YoY Change (2024)

198

HPI Index (2000 = 100)

+98%

Total Change Since 2000

Home values in ZIP 10504 have increased 22.7% over the past year (2024). Since 2000, this ZIP has seen +98% cumulative appreciation.

Year Annual Change HPI Index
2019 +6.2% 159
2020 +0.7% 160
2021 +6.1% 170
2022 +22.7% 208
2024 – 198

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 453 business establishments in ZIP 10504, employing approximately 11,979 people with a combined annual payroll of $1,703,710,000.

453

Businesses

11,979

Employees

$1.7B

Annual Payroll

16

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 84 18.5%
Construction 43 9.5%
Retail trade 43 9.5%
Accommodation and food services 41 9.1%
Finance and insurance 37 8.2%
Real estate and rental and leasing 37 8.2%
Health care and social assistance 37 8.2%
Other services (except public administration) 36 8.0%
Wholesale trade 22 4.9%
Administrative and support and waste management and remediation services 20 4.4%
Educational services 16 3.5%
Arts, entertainment, and recreation 13 2.9%
Manufacturing 6 1.3%
Transportation and warehousing 6 1.3%
Information 6 1.3%
Management of companies and enterprises 5 1.1%

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 10504 vs 10594 →

ZIP 10504 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 10504 ranks #7 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 10504 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 10504 ranks the highest of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
10594 Thornwood, NY 5,117 3.6 mi
10570 Pleasantville, NY 12,680 4.2 mi
10549 Mount Kisco, NY 16,638 4.9 mi
06831 Greenwich, CT 14,792 3.8 mi
10577 Purchase, NY 6,552 6.5 mi
10604 West Harrison, NY 11,250 5.3 mi
10514 Chappaqua, NY 11,946 4.5 mi
10507 Bedford Hills, NY 6,408 6.8 mi
10595 Valhalla, NY 8,195 5.0 mi
10532 Hawthorne, NY 4,931 5.4 mi

More ZIP Codes in Westchester County

10701 standard
Yonkers, NY
Pop: 63,393
10801 standard
New Rochelle, NY
Pop: 40,827
10583 standard
Scarsdale, NY
Pop: 38,982
10705 standard
Yonkers, NY
Pop: 38,777
10573 standard
Port Chester, NY
Pop: 38,352
10550 standard
Mount Vernon, NY
Pop: 37,144

Related Areas

Westchester County Armonk, NY New York

Frequently Asked Questions

What county is ZIP code 10504 in? ▼
ZIP code 10504 (Armonk) is located in Westchester County, New York. Westchester County contains multiple ZIP codes, see the full list at /counties/westchester-ny.
What is the population of ZIP code 10504? ▼
ZIP code 10504 in Armonk, NY has a population of 7,987 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 10504? ▼
The median household income in ZIP 10504 is $250,001, which is 228% above the national average of $76,288.
What is the average home value in ZIP 10504? ▼
The median home value in ZIP 10504 is $1,243,100, which is 347% above the national average of $278,155.
What is the demographic makeup of ZIP 10504? ▼
The largest racial group in ZIP 10504 is White at 73.1%. Hispanic or Latino residents make up 13.4% of the population.
How many businesses are in ZIP code 10504? ▼
ZIP code 10504 has 453 business establishments employing approximately 11,979 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 10504? ▼
The top industries by establishment count in ZIP 10504 are: Professional, scientific, and technical services (84), Construction (43), Retail trade (43). There are 16 industry sectors represented in total.
How have home values changed in ZIP code 10504? ▼
According to the FHFA House Price Index, home values in ZIP 10504 increased by 22.7% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 98%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 10504? ▼
In ZIP code 10504, 87.1% of residents aged 25+ have a high school diploma or higher, and 80.2% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 10504? ▼
The mean commute time for workers in ZIP code 10504 is 37.9 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 10504? ▼
In ZIP code 10504, approximately 90.1% of occupied housing units are owner-occupied and 9.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 10504? ▼
The poverty rate in ZIP code 10504 is 4.6% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.