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 High-density area
- $250,000+
- Median income Above-median income area
- $1,243,100
- Median home value Above-median home value
- 80.2%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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 $250,000+ (170% above the average New York ZIP), while per-capita income is $124,238. Both reported hardship measures are comparatively low in absolute terms: poverty is 4.6% and unemployment is 2.5%. Housing is both higher-cost and owner-heavy: median home value is $1,243,100 (229% above the average New York ZIP), while 90.1% of occupied homes are owner-occupied and median rent is $3,131.
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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Westchester County, so 10504 can be compared with both its immediate and county-level context.
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.
- Professional, scientific, and technical services
Professional, scientific, and technical services
84 establishments
- Construction
Construction
43 establishments
- Retail trade
Retail trade
43 establishments
- Accommodation and food services
Accommodation and food services
41 establishments
- Finance and insurance
Finance and insurance
37 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, 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
Who lives in ZIP 10504?
44.2
Median Age
53.4%
Male
46.6%
Female
15.5%
Foreign-Born
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?
$250,000+
Median Household Income
+170% vs state ZIP avg
$124,238
Per Capita Income
4.6%
Poverty Rate
2.5%
Unemployment Rate
37.9 min
Mean Commute Time
How ZIP 10504 ranks among New York ZIPs
Armonk, NY household income vs. every New York ZIP code
Median household income among 1,626 reporting New York ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$250,000 Top 1% higher than 99% of 1,626 New York ZIPs
Each bar is a $20K-wide band; taller bars hold more New York 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
2,629housing units
2,629
Total Housing Units
2,458
Occupied Units
171
Vacant Units
3.07
Avg Household Size
Occupancy Type
$1,243,100
Median Home Value
+229% vs state ZIP avg
$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.
- 10549
Mount Kisco (10549)
16,638 residents
- 06831
Greenwich (06831)
14,792 residents
- 10570
Pleasantville (10570)
12,680 residents
- 10514
Chappaqua (10514)
11,946 residents
- 10604
West Harrison (10604)
11,250 residents
- 10595
Valhalla (10595)
8,195 residents
- 10504
Armonk (10504)
7,987 residents
- 10577 6,552
Purchase (10577)
6,552 residents
- 10507 6,408
Bedford Hills (10507)
6,408 residents
What this shows Among its immediate neighbors, ZIP 10504 ranks #7 by population - useful context the national average alone can't give.
ZIP 10504 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 10504
Armonk (10504)
$250,000 median income
- 10514
Chappaqua (10514)
$250,000 median income
- 10577
Purchase (10577)
$250,000 median income
- 06831
Greenwich (06831)
$227,159 median income
- 10570
Pleasantville (10570)
$183,833 median income
- 10594
Thornwood (10594)
$163,542 median income
- 10532
Hawthorne (10532)
$141,157 median income
- 10549
Mount Kisco (10549)
$133,988 median income
- 10595
Valhalla (10595)
$123,438 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 10504, both outside NY so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (7,987 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Westchester County
Related Areas
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 $250,000+, 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.
Related
Take this with you
What to do with ZIP 10504's numbers, next.
- See how ZIP 10504 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Armonk, NY ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.