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Sullivan County, NY Demographics

Sullivan County, NY is the 34th most populous of 62 counties in New York, with 78,624 residents across 968 square miles. That is about 81 people per square mile.

At the 2020 census

Population 78,624
Land area 968 sq mi
Density 81 / sq mi

Data: 2020 Census · American Community Survey 2024

How Sullivan County compares to the US

We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.

Central Location: Sullivan County, NY

Measured from the county's main population center using 2020 census blocks.

We're computing the drive-time and radius areas around Sullivan County, NY — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.

Census tracts in Sullivan County, NY

Name Population Sq mi Per sq mi
Census Tract 9512.01 4,319 22.0 197
Census Tract 9512.02 4,214 8.2 513
Census Tract 9518.02 3,801 1.4 2,677
Census Tract 9511 3,784 23.3 162
Census Tract 9509 3,518 10.3 340
Census Tract 9517.01 3,443 31.2 110
Census Tract 9516 3,400 30.6 111
Census Tract 9501 3,366 82.8 41
Census Tract 9507.01 3,215 7.3 442
Census Tract 9505 3,075 37.1 83
Census Tract 9518.01 3,008 3.6 827
Census Tract 9504 2,989 48.6 62
Census Tract 9515 2,898 17.3 168
Census Tract 9520 2,413 58.4 41
Census Tract 9513.02 2,366 30.7 77
Census Tract 9508.01 2,324 13.7 170
Census Tract 9510 2,315 11.9 195
Census Tract 9508.02 2,251 18.4 122
Census Tract 9525 2,243 46.5 48
Census Tract 9507.02 2,217 4.9 455
Census Tract 9521 2,203 34.9 63
Census Tract 9524 2,196 50.1 44
Census Tract 9502.01 2,092 25.7 82
Census Tract 9513.01 1,756 35.2 50
Census Tract 9506 1,652 30.4 54
Census Tract 9519 1,546 26.9 57
Census Tract 9522 1,448 36.3 40
Census Tract 9523 1,405 47.2 30
Census Tract 9502.02 1,198 68.5 17
Census Tract 9503 1,161 50.2 23
Census Tract 9517.02 808 54.8 15

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About this page

This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.

Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.

Read how BlockAtlas computes population within an area →