Which ZIP code in Westchester County has the lowest median age?

10577 (Purchase), at 21.3 (±0.4), among 65 ZIP codes with at least 1,000 residents.

Why are some ZIP codes missing?

ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.

Youngest ZIP codes in Westchester County, NY

These are the 25 ZIP codes in Westchester County with the lowest median age, out of 65 with at least 1,000 residents. 10577 (Purchase, 21.3), 10523 (Elmsford, 33.9) and 10701 (Yonkers, 35.5) lead the list. There is no single "best" ZIP code in Westchester County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

Youngest ZIP codes in Westchester County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	10577	Purchase	21.3 ±0.4	5,945	794	1,042
2	10523	Elmsford	33.9 ±3.1	9,450	3,180	3,250
3	10701	Yonkers	35.5 ±0.8	70,676	27,547	27,178
4	10606	White Plains	36.2 ±3.3	17,341	6,759	6,521
5	10553	Mount Vernon	36.5 ±4.6	11,011	3,642	3,277
6	10570	Pleasantville	37.4 ±2.0	13,289	4,300	4,535
7	10548	Montrose	37.9 ±4.5	4,254	1,128	1,174
8	10511	Buchanan	38.5 ±3.5	2,397	831	1,047
9	10801	New Rochelle	38.8 ±2.1	42,754	16,497	19,499
10	10603	White Plains	39.2 ±2.0	18,910	7,128	7,203
11	10573	Port Chester	39.6 ±1.2	40,786	14,412	13,007
12	10550	Mount Vernon	39.8 ±2.0	38,972	14,912	13,539
13	10543	Mamaroneck	39.8 ±3.2	20,989	7,630	7,551
14	10604	West Harrison	39.9 ±3.1	12,517	4,517	5,140
15	10528	Harrison	40.2 ±1.1	14,091	5,099	4,824
16	10526	Goldens Bridge	40.2 ±4.2	2,128	651	681
17	10507	Bedford Hills	40.3 ±5.1	6,109	1,759	2,045
18	10803	Pelham	40.4 ±1.9	13,072	4,298	4,399
19	10705	Yonkers	40.8 ±2.8	38,887	15,044	14,075
20	10538	Larchmont	41.1 ±1.8	17,760	6,743	6,613
21	10514	Chappaqua	41.1 ±2.2	11,790	3,999	4,155
22	10522	Dobbs Ferry	41.3 ±4.5	11,502	3,962	4,303
23	10601	White Plains	41.4 ±2.7	11,930	5,933	8,154
24	10704	Yonkers	41.6 ±2.3	31,921	12,166	11,529
25	10549	Mount Kisco	41.6 ±3.7	16,135	6,158	6,245

How we ranked them

Ranked by median age of all residents, lowest first (ACS 5-year estimates, 2020–2024). ZIP codes need at least 1,000 residents to be ranked; 65 of 75 qualify.

Which of these to mail, and why

Younger ZIP codes skew toward renters, students and young families: fitness, quick-service food, apartments, entertainment and first-time-buyer offers.

The top five ZIP codes on this list hold 41,922 households, on 60 carrier routes with 41,268 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 10577 on the EDDM route map

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Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in Westchester County has the lowest median age?: 10577 (Purchase), at 21.3 (±0.4), among 65 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by median age of all residents, lowest first (ACS 5-year estimates, 2020–2024).
Why are some ZIP codes missing?: ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.