- The Marion County - Rankin Fite airport, located in Hamilton, has a newly resurfaced 5,000-ft. runway.
- The Burlington - Northern and Illinois - Southern railroads traverse the southern and northeastern sections of the county respectively.
- The county has a solid infrastructure of highways with 380 miles of federal and state highways and 260 miles of county hghways.
- Corridor X, an interstate type highway, is currently under construction in Marion County with plans of completion in early 2000. When completed, Corridor X will connect Memphis, TN and Birmingham, AL, and is expected to greatly impact economic development and industry in Marion County.
