Gem County, ID Demographics
Gem County, ID is the 19th most populous of 44 counties in Idaho, with 19,123 residents across 560 square miles. That is about 34 people per square mile.
At the 2020 census
| Population | 19,123 |
|---|---|
| Land area | 560 sq mi |
| Density | 34 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Gem 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: Gem County, ID
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Gem County, ID — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Gem County, ID
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 9602 | 6,496 | 66.0 | 98 |
| Census Tract 9601 | 4,780 | 484.9 | 10 |
| Census Tract 9603.01 | 4,352 | 5.9 | 733 |
| Census Tract 9603.02 | 3,495 | 2.9 | 1,197 |
Related places
Other counties nearby
Nearest counties
Metro areas containing Gem 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.