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

12775 (Rock Hill), at 42.2%, among 24 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 Sullivan County, NY

These are the 24 ZIP codes in Sullivan County with the fastest population growth, out of 24 with at least 1,000 residents. 12775 (Rock Hill, 42.2%), 12733 (Fallsburg, 36.4%) and 12754 (Liberty, 25.7%) lead the list. There is no single "best" ZIP code in Sullivan 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 Sullivan County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	12775	Rock Hill	42.2%	2,623	1,022	1,220
2	12733	Fallsburg	36.4%	1,865	96	854
3	12754	Liberty	25.7%	8,296	2,686	3,251
4	12789	Woodridge	24.7%	2,594	1,106	977
5	12751	Kiamesha Lake	22.1%	1,407	451	454
6	12723	Callicoon	18.3%	1,923	890	—
7	12719	Barryville	16.9%	1,339	620	386
8	12721	Bloomingburg	15.2%	7,359	2,358	—
9	12779	South Fallsburg	14.2%	2,205	858	841
10	12764	Narrowsburg	12.8%	1,861	934	1,028
11	12790	Wurtsboro	11.8%	4,537	2,001	2,146
12	12747	Hurleyville	9.8%	2,234	741	860
13	12701	Monticello	5.8%	12,197	5,160	6,319
14	12758	Livingston Manor	5.0%	4,025	2,014	1,643
15	12788	Woodbourne	1.9%	3,037	947	1,161
16	12776	Roscoe	-0.2%	2,073	836	928
17	12726	Cochecton	-4.4%	1,168	565	545
18	12566	Pine Bush	-11.3%	10,269	3,625	3,921
19	12740	Grahamsville	-14.9%	1,732	762	788
20	12759	Loch Sheldrake	-21.3%	1,619	505	922
21	12737	Glen Spey	-22.9%	1,513	635	793
22	12748	Jeffersonville	-31.5%	1,518	643	624
23	12729	Cuddebackville	-33.1%	1,203	587	615
24	12783	Swan Lake	-48.2%	1,060	568	681

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; 24 of 58 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 5,361 households, on 13 carrier routes with 6,756 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 12775 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 Sullivan County has the fastest population growth?: 12775 (Rock Hill), at 42.2%, among 24 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.