Marshall County Humane Society
- Organization made up of a very active and dedicated group of volunteers. Contact information and photographs of available pets.
- http://www.petfinder.com/shelters/MS21.html

MS GenWeb - Marshall County
- Local history and resources for genealogical researchers.
- http://www.rootsweb.com/~msmarsha/

Marshall County, 1860 slaveholders and 1870 African Americans
- Largest slaveholders from 1860 slave census schedules and surname matches for African Americans on 1870 census.
- http://freepages.genealogy.rootsweb.com/~ajac/msmarshall.htm

National Register of Historical Places - Marshall County
- Directory of historical places and cultural resources for the county. Offers historical significance, architect details, and related information.
- http://www.nationalregisterofhistoricplaces.com/MS/Marshall/state.html

The Political Graveyard: Marshall County, Miss.
- Database of political history and cemeteries, with brief biographical entries for political figures connected to the county, living and dead, from the 1700s to the present.
- http://politicalgraveyard.com/geo/MS/MR.html

Marshall County Industrial Development Authority
- Promotes location of businesses and industry in the county. Includes information about community education and transportation systems, industrial park, and other economic development assets.
- http://www.marshallcoms.com

Mississippi Department of Transportation
- Map of Marshall county roads.
- http://www.gomdot.com/maps/County_maps/Marshall.pdf