Harrison County is a county located in the northwest portion of the U.S. state of Missouri. As of the 2020 census, the population was 8,157. Its county seat is Bethany. The county was organized February 14, 1845, and named for U.S. Representative Albert G. Harrison of Missouri.
Geography
According to the U.S. Census Bureau, the county has a total area of , of which is land and (0.5%) is water.
Adjacent counties
- Ringgold County, Iowa (north)
- Decatur County, Iowa (northeast)
- Mercer County (east)
- Grundy County (southeast)
- Daviess County (south)
- Gentry County (southwest)
- Worth County (northwest)
Major highways
- 20px Interstate 35
- 20px U.S. Route 69
- 25px U.S. Route 136
- 20px Route 13
- 20px Route 46
- 25px Route 146
Transit
- Jefferson Lines