Owen County is a county located in the U.S. state of Indiana, and determined by the U.S. Census Bureau to include the mean center of U.S. population in 1920. As of 2010, the population was 21,575. The county seat is Spencer.Owen County is part of the Bloomington, Indiana, Metropolitan Statistical Area.GeographyAccording to the 2010 census, the county has a total area of, of which is land and is water.Adjacent countiesPutnam County (north)Morgan County (northeast)Monroe County (southeast)Greene County (south)Clay County (west)Major highways20px U.S. Route 23120px Indiana State Road 4220px Indiana State Road 4320px Indiana State Road 4620px Indiana State Road 6720px Indiana State Road 15720px Indiana State Road 24320px Indiana State Road 246