Sullivan County Population

1850–2026

5,714

2026 projection

4.5% since 2020 (decrease)

05K10K15K20K25K186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Sullivan County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20265,714-240.42%
20255,738-240.42%
20245,762-941.61%
20235,856+170.29%
20225,839-641.08%
20215,903-821.37%
20205,985-761.25%
20196,061-1282.07%
20186,189-140.23%
20176,203-1251.98%

Showing 10 of 32 years.

Sullivan County Demographics

44.1median age

Median age

Female45 yrs
Male41.2 yrs

Adults

4,548
1,218 seniors (65+) · 27% of adults3,330 other adults

Sex

Female 49.8% · 2,916Male 50.2% · 2,941

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 59 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Sullivan County Income

$56,964median household income

Median household income

$56,964

Half of households earn more, half earn less

Median earnings

$41,036

Typical yearly pay for a worker 25 or older.

Poverty rate

13.7%

About 1 in 7 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Sullivan County Marital Status

47% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married47%49%45%
Never married27%32%21%
Divorced16%13%19%
Widowed8%5%12%
Separated2%1%3%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201