5×5 Storage Unit in St. Charles, MO

5×5 climate-controlled units start at $44/month — 2nd month free.
Ground-floor access, 24/7 video security, carts and dollies available at 3810 Millstone Corporate Dr, St. Charles.
Check availability and reserve online →
Questions? Call (636) 442-0196.

What’s Included With Every 5×5 Unit

Every 5×5 at Fountain Lakes Storage is a ground-floor, interior unit — you walk to it through a climate-controlled hallway rather than pulling up outside, so your belongings never sit exposed to Missouri weather during loading.

  • Ground-floor access — no stairs, no freight elevator, no waiting
  • Free carts and dollies — available at the entrance whenever you need them
  • Access 6:00 AM to 9:00 PM, Sunday Closed
  • Month-to-month rental — no long-term contract, no early-termination fee
  • 24/7 video security and a local manager on site
  • Climate-controlled year-round, not just temperature-regulated

The whole point of a 5×5 is that it’s the affordable option. Ours still gets the same building, the same security and the same climate control as our largest units.

What Fits Inside a 5×5 Storage Unit?

What Fits Inside a 5x5 Storage Unit

5×5 or 5×10 — Which Do You Need?

The most common mistake is renting too small and having to move everything up a size a month later. Here’s the honest comparison:

5×55×10
Floor space25 sq ft50 sq ft
Storage volume200 cubic feet400 cubic feet
Monthly rate$44.00$58.00
Roughly holdsA walk-in closetA studio or small one-bedroom
Largest mattressTwinQueen or king
Medium boxes10–1540–50
Fits a motorcycle?NoYes

Choose the 5×5 if you’re storing seasonal items, boxes, a few small furniture pieces, or a dorm room’s worth of belongings.

Choose the 5×10 if there’s a bed larger than a twin, a sofa, a full-size appliance, or a motorcycle involved. It’s $14 more a month for double the space — usually cheaper than moving twice.

Why a Climate-Controlled 5×5 is Better?

Why a Climate-Controlled 5x5 is Better

Tips to Maximize Your Small Space

Frequently Asked Questions (FAQs)

Q1. Can a queen-sized mattress fit in a 5×5 storage unit?

Q2. How many boxes fit in a small storage unit?

Q3. Is a 5×5 the smallest storage unit available?

Q4. Will a motorcycle fit in a 5×5 unit?

Q5. How do I know if I should rent a storage unit this size?

Conclusion