Great Plains FCU Address: 301 S Alvarado St, Montezuma, KS 67867 Phone: (620) 846-2203 Hours: Mon: 9am-5pm Tue: 9am-5pm Wed: 9am-5pm Thu: 9am-5pm Fri: 9am-5pm Loans, Credit Unions, Federally Chartered Credit Unions Other Businesses: SUBWAY at 500 W Texcoco, Montezuma, KS 67867