As of Sep 30, 2017, O'Reilly operated 4,984 stores in 47 states.

In fiscal 2016, the company opened 70 stores, acquired 48 stores and closed 1 store. During the first nine months of fiscal 2017, the company opened 162 new stores and closed 7 stores. The company expects to open 190 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 growth5.8%5.6%4.7%4.8%4.8%6.3%
Total gross square feet (M)36,34032,12333,14831,59130,07728,628
Total gross square feet growth6.0%-3.1%4.9%5.0%5.1%7.9%
Avg store gross sq ft7,3006,7007,3007,2007,2007,200
Avg store gross sq ft growth0.2%-8.3%0.2%0.2%0.3%1.5%