Self-Storage FacilityPublic StorageMoving Supply Store
Store your belongings at Extra Space Storage on 2896 Highway K in O'Fallon, MO today! Our large selection of storage units, exceptional security, multiple entrance/exit gates, wide drive isles, loading dock and helpful staff make finding the right self storage unit for you easy and hassle-free. Experience the professionalism, cleanliness, and commitment to exceptional customer service that Extra Space Storage is known for. Contact us today to reserve your storage unit or set up a time to stop by and take a tour of our facility!
Andy was amazing in helping us pick out a storage unit for our first time! He showed us around the building along with the different sized units and pricing!
AB
Ashley Burnet
Dec 6, 2025
5.0
Huge thanks to Quinton for getting me set up with a unit that was not only perfect for the amount of things I needed stored, but finding a spot that was most convenient. Such a pleasure and his personality definitely helped win me over with BestBox!
TH
Tyler Halas
Nov 22, 2025
5.0
Quinton the manager has been the absolutely amazing, took great care of everything with the best customer support I’ve seen in the area. Showed me my belonging are being well taken care of with zero issues in the back of my mind. Highly recommended!
SP
SeSe Puethe
Nov 12, 2025
4.0
Great prices but the logistics needed more consideration.
Frequently Asked Questions About Extra Space Storage
What storage unit size do I need?
The best way to determine which storage option is right for you is with our helpful Storage Unit Size Guide! It will help you estimate how many boxes and non-packed items, such as furniture and appliances, you can fit into each storage unit.
What type of storage unit do I need?
Many factors determine your best storage solution. Do you want the convenience of a ground-floor unit? Do your belongings need climate control? What about vehicle storage? We have online resources to help you explore these options to find your ideal storage unit.
What are your storage unit prices?
Monthly rates can be found online and vary by facility, unit size, features, and local market. Please use our site search tools to find pricing at a facility near you.
What's the difference between office, access, and gate hours?
The office hours are the hours of operation for the property. During these hours the Store Manager will be available to assist you with your storage needs or moving and packing supplies. The gate hours are the hours of the property, and when your unit can be accessed.
Can I buy boxes or other packing products from Extra Space Storage?
Extra Space Storage offers a variety of moving and packing supplies online and at local facilities for purchase.
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