Cities in Sullivan County, New York by Population (2024)

There are 40 cities in Sullivan County, New York.

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

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City	Rank	State	2024 Population	2020 Census	Annual Change	Density (mi²)	Area (mi²)
Middletown	1	New York	30,140	30,274	-0.11%	5,680	5.31
Mechanicstown	2	New York	9,470	7,770	4.7%	2,828	3.35
Monticello	3	New York	7,327	7,243	0.29%	1,795	4.08
Liberty	4	New York	5,261	5,023	1.15%	2,007	2.62
Fallsburg	5	New York	2,888	1,104	18.26%	857	3.37
Rock Hill	6	New York	2,564	2,204	3.64%	298	8.59
South Fallsburg	7	New York	2,564	1,312	13.91%	805	3.19
Loch Sheldrake	8	New York	1,658	1,588	1.1%	1,003	1.65
Pine Bush	9	New York	1,636	1,682	-0.67%	777	2.11
Sparrow Bush	10	New York	1,477	1,067	7.5%	526	2.81
Hurleyville	11	New York	1,376	1,386	-0.14%	1,226	1.12
Washington Heights	12	New York	1,181	1,963	-14.17%	803	1.47
Walker Valley	13	New York	1,129	1,751	-12.07%	349	3.24
Wurtsboro	14	New York	1,080	1,086	-0.09%	865	1.25
Bloomingburg	15	New York	988	986	0.1%	1,436	0.69
Otisville	16	New York	986	1,012	-0.6%	1,291	0.76
Livingston Manor	17	New York	798	928	-3.85%	246	3.25
Napanoch	18	New York	715	1,045	-8.22%	498	1.44
Smallwood	19	New York	713	619	3.48%	297	2.40
Woodridge	20	New York	713	709	0.14%	426	1.67
Kauneonga Lake	21	New York	555	338	1.46%	485	1.15
Cragsmoor	22	New York	502	442	3.08%	115	4.36
Roscoe	23	New York	458	489	1.78%	470	0.97
Barryville	24	New York	440	188	16.71%	648	0.68
Kiamesha Lake	25	New York	427	191	14.17%	419	1.02
Grahamsville	26	New York	404	450	-2.65%	274	1.47
Woodbourne	27	New York	399	537	-7.85%	553	0.72
Jeffersonville	28	New York	396	392	0.25%	971	0.41
Wurtsboro Hills	29	New York	386	322	4.32%	326	1.19
Narrowsburg	30	New York	384	372	0.79%	212	1.81
Hortonville	31	New York	295	269	2.43%	390	0.76
Lake Huntington	32	New York	293	232	3.9%	245	1.20
Swan Lake	33	New York	250	248	0.4%	146	1.71
Callicoon	34	New York	205	559	-4.65%	330	0.62
Eldred	35	New York	175	243	-4.37%	135	1.30
Mountain Dale	36	New York	143	377	-28.86%	25	5.79
Hankins	37	New York	142	124	3.65%	103	1.37
White Lake	38	New York	102	68	9.68%	115	0.89
Bridgeville	39	New York	0	224	0%	0	1.67
Mongaup Valley	40	New York	0	689	0%	0	5.02

showing: 40 rows

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Sullivan County, New York?

Middletown is the largest city in Sullivan County.

What is the smallest city in Sullivan County, New York?

Mongaup Valley is the smallest city in Sullivan County.

How many cities are in Sullivan County?