| ZIP Codes: | 81 ZIP Codes (68 Standard, 13 PO Box, 0 Unique) [See All] |
| Area Codes: | 329 / 347 / 845 / 914 / 929 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:17 PM |
| Population: | 997,782 [See All] |
| FIPS: | 36119 |
| CBSA: | New York-Newark-Jersey City, NY-NJ |
| Land Area: | 474 sq mi |
| Water Area: | 22 sq mi |
| Coordinates: | 41.1110, -73.7852 |
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997,782 residents live across 81 ZIPs covering 474 sq mi, served by 63 distinct USPS-recognized cities.
Population moved from 960,889 to 997,674 from 2014 to 2024 — a +3.8% change. 45 ZIPs gained residents, 28 lost.
The county's wealthiest ZIP 10583 (Scarsdale, $250,001 median) and poorest ZIP 10550 (Mount Vernon, $60,701) are 6.1 miles apart — a 4.1× income gap across local geography.
Median home values vary 5.3× across this county — from $363,100 in 10552 (Mount Vernon) to $1,906,900 in 10580 (Rye).
Density varies 96× across the county — from 210 people/sq mi in 10576 (Pound Ridge) to 20,065 in 10550 (Mount Vernon).
Educational attainment ranges from 24.9% bachelor's+ in 10550 (Mount Vernon) to 85.3% in 10804 (New Rochelle) — the breadth of educational profiles across the area.
Within New York, this is the #7 most populous of 62 counties and ranks #1 for median household income .
On the national stage, Westchester County is the #50 most populous US county , ranks #13 for income .
Weighted by population, the typical household earns about $135,886 across the county — reflecting what a typical resident sees, not a simple ZIP average.
53.1% of adults age 25+ hold a bachelor's degree or higher (371,968 of 700,610 reporting).
68 Standard delivery, 13 PO Box only, 0 single-entity Unique ZIPs serve this county.
34 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
Median household income spans 4.1× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 10701 | Yonkers | Standard | 70,676 | $64,776 | 6.5 | 18.5% |
| 10801 | New Rochelle | Standard | 42,754 | $85,573 | 3.4 | 3.6% |
| 10573 | Port Chester | Standard | 40,786 | $105,686 | 5.5 | 5.5% |
| 10583 | Scarsdale | Standard | 40,207 | $250,001 | 11.3 | 1.8% |
| 10550 | Mount Vernon | Standard | 38,972 | $60,701 | 1.9 | 4.1% |
| 10705 | Yonkers | Standard | 38,887 | $67,918 | 2.5 | -2.3% |
| 10562 | Ossining | Standard | 33,793 | $115,697 | 16.9 | 7.4% |
| 10704 | Yonkers | Standard | 31,921 | $106,786 | 2.9 | 2.3% |
| 10598 | Yorktown Heights | Standard | 28,821 | $173,573 | 27.1 | -3.0% |
| 10710 | Yonkers | Standard | 25,855 | $108,845 | 4.9 | -5.6% |
| 10566 | Peekskill | Standard | 25,625 | $85,954 | 5.4 | 7.3% |
| 10591 | Tarrytown | Standard | 23,926 | $104,984 | 11.6 | 3.9% |
| 10703 | Yonkers | Standard | 22,586 | $89,773 | 1.4 | 8.1% |
| 10708 | Bronxville | Standard | 22,482 | $126,343 | 2.9 | -0.1% |
| 10552 | Mount Vernon | Standard | 22,341 | $96,717 | 1.7 | 9.8% |
| 10543 | Mamaroneck | Standard | 20,989 | $126,417 | 4.2 | 3.6% |
| 10805 | New Rochelle | Standard | 20,903 | $102,109 | 1.7 | 10.6% |
| 10567 | Cortlandt Manor | Standard | 19,976 | $144,194 | 23.6 | -1.1% |
| 10605 | White Plains | Standard | 19,493 | $148,982 | 6.2 | 10.3% |
| 10603 | White Plains | Standard | 18,910 | $121,026 | 4.0 | 5.5% |
| 10580 | Rye | Standard | 18,391 | $250,001 | 8.4 | 6.2% |
| 10538 | Larchmont | Standard | 17,760 | $207,969 | 3.5 | 5.7% |
| 10606 | White Plains | Standard | 17,341 | $112,270 | 1.5 | 0.3% |
| 10549 | Mount Kisco | Standard | 16,135 | $133,988 | 19.6 | -0.2% |
| 10804 | New Rochelle | Standard | 16,108 | $250,001 | 4.5 | 8.5% |
| 10528 | Harrison | Standard | 14,091 | $154,416 | 3.8 | 10.8% |
| 10530 | Hartsdale | Standard | 13,892 | $121,722 | 3.7 | 11.8% |
| 10570 | Pleasantville | Standard | 13,289 | $183,833 | 6.3 | 5.5% |
| 10803 | Pelham | Standard | 13,072 | $215,208 | 4.3 | 4.4% |
| 10604 | West Harrison | Standard | 12,517 | $117,014 | 7.9 | 9.8% |
| 10520 | Croton On Hudson | Standard | 12,368 | $142,791 | 23.2 | -5.6% |
| 10601 | White Plains | Standard | 11,930 | $85,859 | 0.7 | 3.5% |
| 10514 | Chappaqua | Standard | 11,790 | $250,001 | 12.6 | -8.7% |
| 10522 | Dobbs Ferry | Standard | 11,502 | $165,417 | 3.3 | 4.6% |
| 10553 | Mount Vernon | Standard | 11,011 | $84,478 | 0.7 | 9.8% |
| 10536 | Katonah | Standard | 10,669 | $250,001 | 29.9 | -0.5% |
| 10709 | Eastchester | Standard | 10,352 | $170,417 | 1.7 | 10.8% |
| 10510 | Briarcliff Manor | Standard | 10,226 | $220,771 | 11.6 | -1.6% |
| 10707 | Tuckahoe | Standard | 9,688 | $130,957 | 1.3 | -8.0% |
| 10523 | Elmsford | Standard | 9,450 | $118,438 | 3.6 | 10.4% |
| 10706 | Hastings On Hudson | Standard | 9,183 | $190,833 | 3.7 | 5.1% |
| 10504 | Armonk | Standard | 7,665 | $250,001 | 18.3 | -2.8% |
| 10589 | Somers | Standard | 7,604 | $129,214 | 7.5 | -18.9% |
| 10533 | Irvington | Standard | 7,362 | $174,038 | 4.8 | -1.6% |
| 10595 | Valhalla | Standard | 7,243 | $123,438 | 6.3 | -15.6% |
| 10547 | Mohegan Lake | Standard | 7,205 | $162,605 | 5.4 | 4.2% |
| 10590 | South Salem | Standard | 6,989 | $211,734 | 13.9 | -0.5% |
| 10607 | White Plains | Standard | 6,466 | $168,603 | 2.3 | -3.9% |
| 10506 | Bedford | Standard | 6,244 | $250,001 | 16.9 | 17.7% |
| 10502 | Ardsley | Standard | 6,197 | $250,001 | 2.3 | 14.8% |
| 10507 | Bedford Hills | Standard | 6,109 | $107,270 | 7.4 | -13.2% |
| 10577 | Purchase | Standard | 5,945 | $250,001 | 6.4 | -5.2% |
| 10532 | Hawthorne | Standard | 5,347 | $141,157 | 3.1 | 9.0% |
| 10594 | Thornwood | Standard | 5,110 | $163,542 | 2.2 | -1.7% |
| 10560 | North Salem | Standard | 4,918 | $193,906 | 23.0 | 3.7% |
| 10576 | Pound Ridge | Standard | 4,891 | $250,001 | 23.3 | 1.0% |
| 10548 | Montrose | Standard | 4,254 | $142,273 | 2.1 | 32.4% |
| 10588 | Shrub Oak | Standard | 2,783 | $178,977 | 1.7 | 10.5% |
| 10511 | Buchanan | Standard | 2,397 | $128,218 | 1.8 | 2.0% |
| 10526 | Goldens Bridge | Standard | 2,128 | $250,001 | 3.5 | 24.2% |
| 10578 | Purdys | Standard | 1,780 | $250,001 | 1.5 | 202.2% |
| 10501 | Amawalk | Standard | 1,727 | $220,449 | 1.8 | 61.0% |
| 10546 | Millwood | Standard | 1,392 | $206,750 | 1.4 | 21.1% |
| 10505 | Baldwin Place | Standard | 1,119 | $153,426 | 1.5 | 42.5% |
| 10518 | Cross River | Standard | 992 | $250,001 | 3.6 | -34.1% |
| 10597 | Waccabuc | Standard | 679 | $244,853 | 3.6 | -39.8% |
| 10596 | Verplanck | PO Box | 650 | $98,091 | 3.9 | -60.1% |
| 10517 | Crompond | PO Box | 584 | $117,009 | 0.1 | -22.8% |
| 10527 | Granite Springs | Standard | 418 | $250,001 | 2.3 | -63.8% |
| 10535 | Jefferson Valley | Standard | 392 | $66,189 | 0.5 | -31.6% |
| 10545 | Maryknoll | PO Box | 185 | — | 0.1 | 37.0% |
| 10503 | Ardsley On Hudson | PO Box | 132 | $243,036 | 0.1 | -23.3% |
| 10540 | Lincolndale | PO Box | 108 | — | 0.0 | — |
| 10519 | Croton Falls | PO Box | 99 | — | 0.1 | -45.3% |
| 10587 | Shenorock | PO Box | — | — | 0.0 | — |
| 10521 | Croton On Hudson | PO Box | — | — | 0.0 | — |
| 10602 | White Plains | PO Box | — | — | 0.0 | — |
| 10610 | White Plains | PO Box | — | — | 0.0 | — |
| 10802 | New Rochelle | PO Box | — | — | 0.0 | — |
| 10551 | Mount Vernon | PO Box | — | — | 0.0 | — |
| 10702 | Yonkers | PO Box | — | — | 0.0 | — |