Poland is an unincorporated community in eastern Cass Township, Clay County, Indiana, United States. It lies along State Road 42 southeast of the city of Brazil, the county seat of Clay County. Its elevation is 696 feet (212 m). Although Poland is unincorporated, it has a post office, with the ZIP code of 47868.The zip code of 47868 has segments in three counties (Clay, Owen, and Putnam).