Item 2. PROPERTIES

As of December 31, 2018, there were 2,491 restaurants operated by Chipotle and our consolidated subsidiaries, 2,489 of which were Chipotle restaurants. The table below sets forth the locations (by state or country) of all restaurants in operation.

We categorize our restaurants as end-caps (at the end of a line of retail outlets), in-lines (in a line of retail outlets), free-standing, or other. Of our restaurants in operation as of December 31, 2018, we had 1,605 end-cap locations, 398 free-standing units, 348 in-line locations, and 140 other locations. The average restaurant size is about 2,500 square feet and seats about 56 people. Many of our restaurants also feature outdoor patio space.

Our main office is located at 610 Newport Center Drive, Suite 1300, Newport Beach, CA 92660 and our telephone number is (949) 524-4035. We lease our main office and substantially all of the properties on which we operate restaurants. For additional information regarding the lease terms and provisions, see Note 11. “Leases” in our consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

We own 17 properties and operate restaurants on all of them.