Which ZIP code in Suffolk County has the highest share of households with children?

11724 (Cold Spring Harbor), at 50.0%, among 88 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.

ZIP codes with the most families with kids in Suffolk County, NY

These are the 25 ZIP codes in Suffolk County with the highest share of households with children, out of 88 with at least 1,000 residents. 11724 (Cold Spring Harbor, 50.0%), 11941 (Eastport, 47.8%) and 11950 (Mastic, 46.9%) lead the list. There is no single "best" ZIP code in Suffolk County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

ZIP codes with the most families with kids in Suffolk County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	11724	Cold Spring Harbor	50.0%	3,073	1,017	1,052
2	11941	Eastport	47.8%	2,814	1,017	1,045
3	11950	Mastic	46.9%	17,599	4,871	4,766
4	11738	Farmingville	42.6%	18,877	5,105	5,388
5	11934	Center Moriches	41.7%	9,418	2,795	3,023
6	11722	Central Islip	41.3%	39,033	9,660	10,045
7	11718	Brightwaters	41.0%	3,179	1,054	1,148
8	11778	Rocky Point	40.2%	12,390	4,592	4,668
9	11951	Mastic Beach	40.0%	15,938	5,050	4,813
10	11720	Centereach	38.1%	29,292	8,860	9,141
11	11795	West Islip	38.1%	25,379	8,011	8,088
12	11706	Bay Shore	37.5%	68,976	19,431	18,506
13	11786	Shoreham	37.2%	6,459	1,945	1,917
14	11725	Commack	36.3%	29,073	9,230	9,774
15	11705	Bayport	35.8%	8,284	2,866	2,995
16	11763	Medford	35.2%	29,973	9,537	9,323
17	11752	Islip Terrace	35.1%	9,204	3,046	3,150
18	11940	East Moriches	35.1%	5,819	2,119	2,067
19	11726	Copiague	35.0%	21,455	5,940	5,756
20	11733	East Setauket	35.0%	17,752	6,137	6,129
21	11713	Bellport	34.8%	9,218	3,169	3,861
22	11967	Shirley	34.7%	27,975	8,517	8,312
23	11729	Deer Park	34.5%	27,231	8,697	9,131
24	11784	Selden	33.7%	26,244	8,639	7,870
25	11755	Lake Grove	33.3%	12,144	4,085	4,322

How we ranked them

Ranked by the share of households with one or more people under 18 (ACS Data Profile, 2020–2024). The Census Bureau does not publish a margin of error for this share in our files. ZIP codes need at least 1,000 residents to be ranked; 88 of 108 qualify.

Which of these to mail, and why

Households with children buy tutoring, youth sports, pediatric and family dental care, child care, birthday venues and family dining. EDDM reaches every door on a route, so a higher share means more of your pieces land with families.

The top five ZIP codes on this list hold 14,805 households, on 30 carrier routes with 15,274 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 11724 on the EDDM route map

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Frequently asked questions

Which ZIP code in Suffolk County has the highest share of households with children?: 11724 (Cold Spring Harbor), at 50.0%, among 88 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by the share of households with one or more people under 18 (ACS Data Profile, 2020–2024). The Census Bureau does not publish a margin of error for this share in our files.
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.