Clarksburg Fire Department 6645 N County Road 700 E Clarksburg, IN 47225 Phone : (812) 527-2421 United States Government--post Office Clarksburg, IN 47225 Phone : (812) 527-2004 Post Office - Clarksburg 6656 N County Road 700 E Clarksburg, IN 47225 Phone : (812) 527-2004 Clarksburg Christian Church 6708 N County Rd 700 E Clarksburg, IN 47225 Phone : (812) 527-2845 Clarksburg Covenant Church 6696 N County Road 700 E Clarksburg, IN 47225 Phone : (812) 527-2711