There is no Indian Consulate in Mississippi!
Since Mississippi comes under the jurisdiction of Consulate at Atlanta, the nearest Indian Consulate you should visit is located at Atlanta at the below address
Atlanta Consulate Address
Consulate General of India,
5549 Glenridge Drive NE,
Atlanta, GA 30342
Helpline Tel: 2404-996-6228
See more about Atlanta Consulate at here – http://passportindiaguide.com/indian-consulate-in-atlanta/