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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2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Middletown1New York30,14030,274-0.11%5,6805.31
Mechanicstown2New York9,4707,7704.7%2,8283.35
Monticello3New York7,3277,2430.29%1,7954.08
Liberty4New York5,2615,0231.15%2,0072.62
Fallsburg5New York2,8881,10418.26%8573.37
Rock Hill6New York2,5642,2043.64%2988.59
South Fallsburg7New York2,5641,31213.91%8053.19
Loch Sheldrake8New York1,6581,5881.1%1,0031.65
Pine Bush9New York1,6361,682-0.67%7772.11
Sparrow Bush10New York1,4771,0677.5%5262.81
Hurleyville11New York1,3761,386-0.14%1,2261.12
Washington Heights12New York1,1811,963-14.17%8031.47
Walker Valley13New York1,1291,751-12.07%3493.24
Wurtsboro14New York1,0801,086-0.09%8651.25
Bloomingburg15New York9889860.1%1,4360.69
Otisville16New York9861,012-0.6%1,2910.76
Livingston Manor17New York798928-3.85%2463.25
Napanoch18New York7151,045-8.22%4981.44
Smallwood19New York7136193.48%2972.40
Woodridge20New York7137090.14%4261.67
Kauneonga Lake21New York5553381.46%4851.15
Cragsmoor22New York5024423.08%1154.36
Roscoe23New York4584891.78%4700.97
Barryville24New York44018816.71%6480.68
Kiamesha Lake25New York42719114.17%4191.02
Grahamsville26New York404450-2.65%2741.47
Woodbourne27New York399537-7.85%5530.72
Jeffersonville28New York3963920.25%9710.41
Wurtsboro Hills29New York3863224.32%3261.19
Narrowsburg30New York3843720.79%2121.81
Hortonville31New York2952692.43%3900.76
Lake Huntington32New York2932323.9%2451.20
Swan Lake33New York2502480.4%1461.71
Callicoon34New York205559-4.65%3300.62
Eldred35New York175243-4.37%1351.30
Mountain Dale36New York143377-28.86%255.79
Hankins37New York1421243.65%1031.37
White Lake38New York102689.68%1150.89
Bridgeville39New York02240%01.67
Mongaup Valley40New York06890%05.02
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?

There are 40 cities in Sullivan County, New York.

Frequently Asked Questions