Great Southern Bank Address: 519 6th St, Osawatomie, KS 66064 Phone: (913) 755-3134 Banks Other Businesses: First Option Bank at 601 Main St, Osawatomie, KS 66064 Landmark National Bank at 600 Main St, Osawatomie, KS 66064 Cook Chiropractic at 411 6th St, Osawatomie, KS 66064 Country Vintage Inn at 1117 6th St, Osawatomie, KS 66064