Courthouse Square Apartments Apartments Courthouse Square Apartments Visit Website 235 S Main Street Ottawa, KS 66067 (785) 242-2235 (785) 350-2290 (fax) Hours: Mon - Fri: 8:30 am - 5:00 pm About About 26 apartments, No Pets, No Smoking, 62 and older or disabled. This incredible property offers 1 bedroom apts with an elevator, secured entrance, community room and a small exterior courtyard.