Area code 812 serves southern Indiana, including cities such as Bloomington, Evansville, and Terre Haute. Established in 1947 as one of the original area codes, it covers a region that includes Indiana University and numerous historical towns and rural communities. Overlay 930 was added in 2015, requiring ten-digit dialing. The area has a diverse economic base including education, manufacturing, and agriculture. Area code 812 represents Indiana’s southern heartland and blends academic influence with small-town tradition and Midwestern values.