Twin Falls County, ID Demographics
Twin Falls County, ID is the 5th most populous of 44 counties in Idaho, with 90,046 residents across 1,922 square miles. That is about 47 people per square mile.
At the 2020 census
| Population | 90,046 |
|---|---|
| Land area | 1,922 sq mi |
| Density | 47 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Twin Falls 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: Twin Falls County, ID
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Twin Falls County, ID — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Twin Falls County, ID
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 7.01 | 11,083 | 15.9 | 698 |
| Census Tract 2 | 7,519 | 2.0 | 3,757 |
| Census Tract 13.01 | 7,292 | 18.7 | 390 |
| Census Tract 5 | 6,587 | 70.2 | 94 |
| Census Tract 8 | 6,433 | 2.0 | 3,245 |
| Census Tract 3 | 5,906 | 147.2 | 40 |
| Census Tract 9 | 5,069 | 5.1 | 992 |
| Census Tract 12.02 | 4,845 | 3.9 | 1,246 |
| Census Tract 10.01 | 4,763 | 1.2 | 3,820 |
| Census Tract 7.02 | 4,531 | 1.2 | 3,752 |
| Census Tract 10.02 | 4,378 | 2.7 | 1,593 |
| Census Tract 4 | 4,291 | 4.0 | 1,060 |
| Census Tract 16 | 4,156 | 1,567.2 | 3 |
| Census Tract 12.01 | 4,145 | 1.6 | 2,537 |
| Census Tract 11 | 3,390 | 0.8 | 3,993 |
| Census Tract 6 | 3,274 | 42.2 | 78 |
| Census Tract 13.02 | 2,384 | 35.6 | 67 |
Related places
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Metro areas containing Twin Falls County
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.