Idaho Population By County in 2017

Based on the US Census Vintage data estimates, in 2017, the population of Idaho was 1,719,745. Among all Idaho counties, Ada[object Promise] had the highest population (456,994), followed by Canyon[object Promise] (217,037), and Kootenai[object Promise] (157,594). Clark[object Promise] was the least populated county (878).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

You can see similar information for other states and by state for the United States.