As of Dec 31, 2017, O'Reilly operated 5,019 stores in 47 states.

In fiscal 2017, the company opened 198 stores and closed 8 stores. The company expects to open 200 net new stores in fiscal 2017.

At year-end, the company owned 1,912 stores and leased 2,842 stores. Leases are typically for an initial term of 10 years minimum with one or more renewal periods..

Most stores are freestanding buildings and prominent end caps situated on or near major traffic thoroughfares, and offer ample parking, easy customer access and are generally located in close proximity to professional service provider customers. Stores, on average, carry approximately 23,000 SKUs and average approximately 7,300 total square feet in size, while Hub stores (312 at year-end) carry approximately 45,000 SKUs and average approximately 10,600 square feet in size.

Store growth3.9%3.9%5.6%4.7%4.8%4.8%
Total gross square feet (M)36,68536,68532,12333,14831,59130,077
Total gross square feet growth14.2%14.2%-3.1%4.9%5.0%5.1%
Avg store gross sq ft7,3007,3006,7007,3007,2007,200
Avg store gross sq ft growth9.9%9.9%-8.3%0.2%0.2%0.3%