Self Storage Units in O'Fallon, MO

Self storage in O'Fallon starts at $45/month for smaller units. Prices increase with unit size — a 10×10 costs more than a 5×5, and climate-controlled units run 25–50% higher. Compare real monthly rates from all 12 facilities in O'Fallon on StorageAtlas.

There are 12 self storage facilities in O'Fallon, Missouri listed on StorageAtlas, including national chains and local operators. Each listing shows unit sizes, monthly pricing, amenities, and contact details.

A 5×5 unit (25 sq ft) holds a few boxes or seasonal items. A 10×10 (100 sq ft) fits a 1-bedroom apartment. A 10×20 (200 sq ft) suits a full 2–3 bedroom home. When in doubt, size up — the price difference between adjacent sizes is usually $20–$40/month.