Stillwater County:Stillwater County is located in southern Montana, also known as Yellowstone Country. Its population is 9,177, making it the 25th-most populous county in Montana.
Ravalli County:Ravalli County is located in western Montana, in the region known as Glacier Country. Its population is 47,298, making it the seventh-most populous county in Montana.
Park County:Park County is located in southwest Montana. Its population is 17,790, making it the 11th-most populous county in Montana.
Missoula County:Missoula County is located in northwest Montana. Its population is 121,041, making it the third-most populous county in Montana.
Madison County:Madison County is located in southwest Montana. Its population is 9,265, making it the 24th-most populous county in Montana.
Lewis and Clark County:Lewis and Clark County is located in southwestern Montana. Its population is 73,832, making it the sixth-most populous county in Montana.
Jefferson County:Jefferson County is located in southwest Montana. Its population is 12,826, making it the 16th-most populous county in Montana. Jefferson County’s top industry is agriculture.
Gallatin County:Gallatin County is located in southwest Montana. Its population is 124,857, making it the second-most populous county in Montana.
Flathead County:Flathead County is located in northwest Montana, a region also known as Glacier Country. Its population is 111,814, making it the fourth-most populous county in Montana.
Carbon County:Carbon County is located in southern Montana, a region also called Yellowstone Country. Its population is 11,179, making it the 20th-most populous county in Montana.