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Sullivan County, TN Demographics

Sullivan County, TN is the 9th most populous of 95 counties in Tennessee, with 158,163 residents across 414 square miles. That is about 382 people per square mile.

At the 2020 census

Population 158,163
Land area 414 sq mi
Density 382 / 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, TN

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

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

Census tracts in Sullivan County, TN

Name Population Sq mi Per sq mi
Census Tract 423 6,743 13.2 512
Census Tract 412 6,635 8.4 787
Census Tract 433.01 6,343 21.5 294
Census Tract 433.02 5,891 34.3 172
Census Tract 421 5,671 7.6 750
Census Tract 434.01 5,304 16.7 318
Census Tract 414 5,174 26.1 198
Census Tract 413 5,137 14.6 352
Census Tract 418 4,731 3.4 1,391
Census Tract 434.02 4,657 9.8 474
Census Tract 432.02 4,588 37.9 121
Census Tract 436 4,562 9.8 468
Census Tract 405 4,523 1.4 3,275
Census Tract 428.02 4,521 2.0 2,273
Census Tract 410 4,465 7.1 628
Census Tract 429 4,418 4.2 1,047
Census Tract 430 4,394 13.5 325
Census Tract 426 4,212 7.3 575
Census Tract 432.01 4,203 14.1 299
Census Tract 408 3,914 1.7 2,247
Census Tract 435 3,893 21.5 181
Census Tract 424 3,539 17.7 200
Census Tract 425 3,376 7.4 456
Census Tract 409 3,360 2.5 1,358
Census Tract 420 3,260 7.8 419
Census Tract 417 3,209 2.7 1,198
Census Tract 422 3,174 7.7 412
Census Tract 406 3,128 1.6 1,911
Census Tract 419 3,079 3.7 835
Census Tract 411 2,910 1.7 1,715
Census Tract 415 2,754 3.1 893
Census Tract 431 2,738 65.8 42
Census Tract 403 2,654 0.6 4,330
Census Tract 416 2,637 2.9 909
Census Tract 402 2,558 3.6 707
Census Tract 428.01 2,524 1.3 1,926
Census Tract 407 2,409 1.8 1,353
Census Tract 427.04 2,382 2.8 854
Census Tract 427.02 2,279 2.0 1,140
Census Tract 427.03 2,214 0.7 3,390

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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 →