State of Idaho showing all 44 county subdivisions. Caribou County is located in the southeastern part on the Wyoming on the east side, north of Bear Lake and Franklin Counties, and south of Bonniville county. Caribou County is approximately 1,786 square miles in size. The County seat is Soda Springs with a populaiton of about 3, 500, the town of Grace has 960 where I live, and the town of Bancroft has about 324 people. The town of Freedom is split by the State of Idaho and the State of Wyoming, half the town in each state. Freedom has approximately 100 people. There are about 7,500 people living in Caribou County which is a rural area for the most part. There is plentiful hunting and fishing in the area, and it is comprised of a canyon, sagebrush, mountains, the Bear River, Alexander, 24 Mile, Chesterfield and Blackfoot reservoirs. It has pine trees, Cedar trees, plains, valleys, and mountain roads. Caribou county is located only 4 hours to Yellowstone National Park, 3 hours to Salt Lake City, Utah, 45 minutes to the Wyoming border and 4 hours to the Capitol of Boise. The Pacific Ocean is about 700 miles to the west. Idaho borders Canada to the north, Nevada and Utah to the south, Oregon and Washington to the west and Wyoming to the east. Idaho is located in the northwest United States of America.