St Louis · 29 locations

Storage unit prices in St Louis, MO

The cheapest 10x10 in St Louis is $56, on Barrett Station in Ballwin, against a market median of $95; the dearest branch, McCausland, starts at $139.

The St Louis market reaches 11 further towns: Ballwin, Bridgeton, Chesterfield, Ellisville, Florissant, Hazelwood, Saint Ann, Saint Louis, Saint Peters, St Charles, Valley Park.

That $56 rests on one address. The next cheapest branch, Wilson, wants $75, so a unit gone from the first is a 34% jump rather than a short walk.
Town lines mean little here. Florissant and St Louis land within 1% of each other on a 10x10, so the choice is a street rather than a suburb.
14 of the 29 branches stocking a 10x10 stand inside St Louis. The 15 beyond it run cheaper, a median $94 against $95 in town.
Public Storage publishes a review score for each branch. Across St Louis they run from 4.4 on Saint Charles Rock in Saint Louis to 4.9 on Spencer in Saint Peters.

20 km $56 cheapest · $139 dearest

Size	Sq ft	Locations	Cheapest	Typical	Dearest	Typical spread
5x5	25	26	$18	$42	$74	123%
5x10	50	27	$30	$58	$108	127%
5x15	75	19	$47	$71	$114	84%
10x10	100	29	$56	$95	$139	55%
10x15	150	24	$90	$134	$213	59%
10x20	200	21	$109	$150	$270	64%
10x25	250	13	$125	$186	$314	75%
10x30	300	14	$150	$244	$585	164%

All markets · National prices by size

Where these numbers come from. 173 advertised prices read from Public Storage's own published listings across 29 locations, last checked 2026-08-12.

Online rate vs regular rate. Every listing publishes two figures. Measured across thousands of observations, the regular rate is 1.5× the online rate at the median, with 88% inside 1% of that and none outside 1.40–1.60×. That is a pricing rule, not a second quote. The online rate is the promotional price for booking on the web; the regular rate is what the unit reverts to. Budget on the regular rate. Comparisons here hold the basis constant, so the gap between locations is real either way.

These are advertised rates for new rentals, not quotes — Public Storage states prices are not guaranteed and they move with availability. Insurance, admin fees and limited-time offers are not included.