What is the largest city in Sullivan County, NY?

Monticello is the largest city or town in Sullivan County, with about 7,279 residents.

How many ZIP codes are in Sullivan County?

Sullivan County includes 52 ZIP Code Tabulation Areas, including 12483, 12701, 12719, 12720, 12721.

What is the population of Sullivan County, NY?

About 79,721 people live in Sullivan County, based on American Community Survey 5-year estimates.

What counties border Sullivan County?

Sullivan County borders Orange County, Ulster County, Pike County, PA, Wayne County, PA, Delaware County.

Sullivan County, NY: Cities, ZIP Codes & Local Data

Population

79,721

Land area

968sq mi

People per sq mi

82

ZIP codes

52

Sullivan County at a glance

Sullivan County is 80% less dense than New York as a whole.
Households here earn a median of $72,382 a year, 16% less than the New York figure of $85,974.
A typical owner-occupied home is valued at $249,000 (41% below New York) and median rent is $1,106 a month.
The biggest population centers are Monticello (7,279), Liberty (5,142) and Rock Hill (2,546).

Local data for Sullivan County, NY

Counts from official public data

Housing and community stats

Sullivan County, NY, American Community Survey 2020-2024

Full profile

Median household income

$72,382

Poverty rate

15.9%

Median home value

$249,000

Prices +2.3% in a year

Median rent

$1,106/mo

Homeownership

67.4%

Bachelor's or higher

30.1%

Median age

41.7

Average commute

28.0 min

Largest reported origins and ancestries: Irish Americans (11,149), German Americans (10,802), Italian Americans (8,312).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

3.8%

Sep 2026, +0.2 pts in a year

Average annual pay

$58,618

30,789 jobs, 2025

Income per person

$60,628

BEA, 2024

Federal spending

$481M

FY 2026, $6,119 per person

PPP loans

$116M

1,694 loans, 15,993 jobs reported

Campaign donations

$183K

Itemized, 2026 cycle

Economy Federal spending PPP loans

How people get to work

Sullivan County, NY, workers 16 and older. American Community Survey 5-year estimates

Drove alone71.5%
Carpooled9.0%
Public transit1.3%
Walked2.9%
Bicycle0.5%
Taxi, ride-hailing, motorcycle or other1.7%
Worked from home13.2%

Average one-way commute: 28.0 minutes for people who do not work from home.

Environment and hazard risk

Sullivan County, NY, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: hurricane

Storm events since 1996

646

Most often thunderstorm wind

Flood insurance policies

354

0.8% of homes, county

July high / Jan low

79° / 13°F

53.1 inches of rain a year

Hazards, floods and storm history Check a flood zone 61 historic places

Health statistics

Share of adults in Sullivan County, NY, CDC PLACES estimates

All 40 measures

Obesity

31.9%

U.S. 33.3% -1.4 pts

Diabetes

12.1%

U.S. 12.1% about the same

Smoking

13.7%

U.S. 12.8% +0.9 pts

Uninsured (18-64)

8.5%

U.S. 11.1% -2.6 pts

Cities, towns and ZIP codes in Sullivan County

Population shown

Frequently asked questions

What is the largest city in Sullivan County, NY?: Monticello is the largest city or town in Sullivan County, with about 7,279 residents.
How many ZIP codes are in Sullivan County?: Sullivan County includes 52 ZIP Code Tabulation Areas, including 12483, 12701, 12719, 12720, 12721.
What is the population of Sullivan County, NY?: About 79,721 people live in Sullivan County, based on American Community Survey 5-year estimates.
What counties border Sullivan County?: Sullivan County borders Orange County, Ulster County, Pike County, PA, Wayne County, PA, Delaware County.