Daviess County is a county in the U.S. state of Indiana. As of the 2020 United States Census, the population was 33,381. The county seat is Washington. About 15% of the county's population is Amish of Swiss origin, as of 2017.

Daviess County ( "Davis"), is a county in Kentucky. As of the 2020 census, the population was 103,312. Its county seat is Owensboro. The county was formed from part of Ohio County on January 14, 1815.