SmartStop Self Storage reigns as the biggest independent self-storage operator in the U.S., according to a new list from the Inside Self-Storage trade publication.

Each year, Inside Self-Storage compiles a list of the largest self-storage operators in the U.S. based on square footage. Among independent operators, SmartStop takes the top spot on the 2014 list with 13 million square feet. According to the list, Ladera Ranch, CA-based SmartStop operates 165 facilities with 106,000 units.

Here are the top 10 independent operators, according to Inside Self-Storage.

1. SmartStop Self Storage

Number of facilities: 165
Total square feet: 13,000,000
Number of units: 106,000
Headquarters: Ladera Ranch, CA
Website: www.smartstopselfstorage.com

2. National Storage Affiliates

Number of facilities: 221
Total square feet: 12,245,075
Number of units: 95,925
Headquarters: Greenwood Village, CO
Website: www.nsaselfstorage.com

3. Derrel’s Mini Storage

Number of facilities: 54
Total square feet: 10,976,207
Number of units: 71,923
Headquarters: Fresno, CA
Website: www.derrels.com

4. Simply Self Storage

Number of facilities: 140
Total square feet: 10,640,000
Number of units: 85,000
Headquarters: Orlando, FL
Website: www.simplyss.com

5. StorageMart

Number of facilities: 150
Total square feet: 9,500,000
Number of units: 95,000
Headquarters: Columbia, MO
Website: www.storage-mart.com

6. SecurCare Self Storage

Number of facilities: 131
Total square feet: 6,351,000
Number of units: 49,536
Headquarters: Lone Tree, CO
Website: www.securcareselfstorage.com

7. Metro Storage

Number of facilities: 93
Total square feet: 5,900,000
Number of Units: 52,751
Headquarters: Lake Forest, IL
Website: www.metrostorage.com

8. The William Warren Group

Number of facilities: 93
Total square feet: 5,700,000
Number of units: 55,439
Headquarters: Santa Monica, CA
Website: www.williamwarren.com

9. iStorage

Number of facilities: 60
Total square feet: 5,554,000
Number of units: 36,505
Headquarters: Winter Garden, FL
Website: www.istorage.com

10. US Storage Centers

Number of facilities: 80
Total square feet: 5,468,246
Number of units: 50,484
Headquarters: Irvine, CA
Website: www.usstoragecenters.com

To see Inside Self-Storage’s complete 2014 ranking of public and private storage operators, visit www.insideselfstorage.com/guides/Top-Ops-Guide.aspx.

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