Realty Income Corporation is a real estate company. As of December 31, 2014, the Company owned 4,327 properties, with approximately 4,257 properties leased and 70 properties available for lease. The Company leased to approximately 234 different commercial tenants doing business in 47 separate industries. The properties are located in 49 states and Puerto Rico with over 70 million square feet of leasable space and with an average leasable space per property of approximately 16,350 square feet, including approximately 11,290 square feet per retail property and approximately 196,800 square feet per industrial and distribution property. The Company has approximately 4,308 single-tenant properties and 19 multi-tenant properties. The Company has grouped its tenants into 48 activity segments.