Gem County, Idaho Cities (2024)

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
Emmett18,7497,7213.03%3,3002.7City
Letha26675657.58%1,4760.5CDP

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Gem County, Idaho?

Emmett is the largest city in Gem County.

What is the smallest city in Gem County, Idaho?

Letha is the smallest city in Gem County.

How many cities are in Gem County?

There are 2 cities in Gem County, Idaho.

Frequently Asked Questions