Which ZIP code in Suffolk County has the fastest population growth?

11976 (Water Mill), at 75.8%, among 85 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.

Fastest-growing ZIP codes in Suffolk County, NY

These are the 25 ZIP codes in Suffolk County with the fastest population growth, out of 85 with at least 1,000 residents. 11976 (Water Mill, 75.8%), 11941 (Eastport, 56.6%) and 11978 (Westhampton Beach, 52.5%) 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.

Fastest-growing ZIP codes in Suffolk County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	11976	Water Mill	75.8%	2,952	1,315	1,971
2	11941	Eastport	56.6%	2,814	1,017	1,045
3	11978	Westhampton Beach	52.5%	4,705	1,704	2,223
4	11968	Southampton	45.6%	15,312	5,831	8,327
5	11937	East Hampton	35.6%	21,882	8,584	11,201
6	11977	Westhampton	30.7%	2,843	1,041	1,461
7	11934	Center Moriches	24.2%	9,418	2,795	3,023
8	11951	Mastic Beach	22.5%	15,938	5,050	4,813
9	11722	Central Islip	22.4%	39,033	9,660	10,045
10	11790	Stony Brook	21.8%	21,074	4,455	4,756
11	11964	Shelter Island	20.4%	2,906	1,087	—
12	11944	Greenport	17.5%	5,037	2,072	2,452
13	11963	Sag Harbor	17.2%	8,390	3,613	4,761
14	11901	Riverhead	16.6%	33,091	12,085	11,100
15	11954	Montauk	14.6%	4,223	1,615	2,871
16	11792	Wading River	13.4%	8,904	3,116	3,049
17	11747	Melville	12.2%	20,513	7,543	7,763
18	11726	Copiague	10.1%	21,455	5,940	5,756
19	11733	East Setauket	8.5%	17,752	6,137	6,129
20	11749	Islandia	7.8%	3,600	1,217	1,148
21	11705	Bayport	7.3%	8,284	2,866	2,995
22	11769	Oakdale	7.1%	8,935	3,409	3,717
23	11950	Mastic	7.0%	17,599	4,871	4,766
24	11703	North Babylon	6.6%	17,187	5,565	5,627
25	11742	Holtsville	6.1%	13,202	4,651	4,675

How we ranked them

Ranked by the change in ACS population estimates between the 2015–2019 and 2020–2024 releases. Both are 5-year averages, and ZIP code areas were redrawn for 2020, so a large change can partly reflect a boundary change. Both periods must have at least 1,000 residents. ZIP codes need at least 1,000 residents to be ranked; 85 of 108 qualify.

Which of these to mail, and why

Growing ZIP codes add households every year, which means new homes, new routes and customers without a go-to provider yet. Check the route map: new subdivisions can appear as new carrier routes.

The top five ZIP codes on this list hold 18,451 households, on 41 carrier routes with 24,767 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 11976 on the EDDM route map

More rankings

Businesses that mail these ZIP codes

Map it and price it

EDDM guides

Frequently asked questions

Which ZIP code in Suffolk County has the fastest population growth?: 11976 (Water Mill), at 75.8%, among 85 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by the change in ACS population estimates between the 2015–2019 and 2020–2024 releases. Both are 5-year averages, and ZIP code areas were redrawn for 2020, so a large change can partly reflect a boundary change. Both periods must have 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.

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