Idaho Population By County in 2018

Based on the US Census Vintage data estimates, in 2018, the population of Idaho was 1,752,074. Among all Idaho counties, Ada[object Promise] had the highest population (469,161), followed by Canyon[object Promise] (223,518), and Kootenai[object Promise] (161,279). Clark[object Promise] was the least populated county (845).

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.