Bethlehem is an unincorporated community in Bethlehem Township, Clark County, Indiana, United States, twenty-five miles up the Ohio River from Louisville, Kentucky. It was platted in 1812 and according to WPA records was presumably named for Bethlehem, Pennsylvania. Its first office was established on March 6, 1816. The community's post office is popula…Bethlehem is an unincorporated community in Bethlehem Township, Clark County, Indiana, United States, twenty-five miles up the Ohio River from Louisville, Kentucky. It was platted in 1812 and according to WPA records was presumably named for Bethlehem, Pennsylvania. Its first office was established on March 6, 1816. The community's post office is popular around Christmas with those wanting to have a Bethlehem postmark on Christmas letters and cards.