Looking for storage units in Thornton, Colorado? Browse and compare 11 self-storage facilities side by side. 5x5 units start at $41/month. 5 of them publish a monthly rate and unit sizes, so you can compare those without ringing round.

Thornton storage options range from small 5x5 lockers to large 10x30 drive-up units, on flexible month-to-month terms. 6 facilities offer climate-controlled storage to protect furniture, electronics, and documents from heat and humidity. 6 offer drive-up access for loading straight from your vehicle. 1 provide 24-hour access. 7 have vehicle, RV, or boat storage. Compare amenities and prices below to find the right unit in Thornton.

Thornton storage prices by unit size

Averages from real units listed across Thornton, CO facilities, in US dollars. 55% of them mention climate-controlled units on their own website.

Size	Typical use	Median / mo	Average	Range	Units
5×5	Closet-sized	$57	$53	$41 – $60	3thin
5×10	Studio / small bedroom	$88	$90	$67 – $110	7
5×15	Studio / 1-bedroom	$85	$80	$75 – $85	2thin
10×10	1-bedroom apartment	$140	$137	$85 – $172	8
10×15	Large 1-bed / small 2-bed	$178	$166	$110 – $209	6
10×20	2–3 bedroom home	$225	$193	$80 – $265	8
10×25	3-bedroom home	$290	$297	$280 – $322	3thin
10×30	4–5 bedroom home	$246	$242	$205 – $292	4thin

Not sure which size you need? See the unit size guide or compare with the Colorado pricing overview.

Things you'll need

Disc lock

Required by most facilities

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Storage bins

Better than cardboard for long-term

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Shoulder Dolly

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Self Storage in Thornton — Common Questions

How much does self storage cost in Thornton, CO?

The cheapest 5x5 unit published in Thornton is $41/month. Prices rise with unit size, and operators charge more for a climate-controlled unit than a standard one. 5 of the 11 facilities we list in Thornton publish a rate you can compare, and the rest we ring for you.

How many self storage facilities are in Thornton?

There are 11 self storage facilities in Thornton, Colorado listed on StorageAtlas, including national chains and local operators. 5 of them publish a monthly rate; every listing carries the address, amenities and contact details we hold.

What size storage unit do I need in Thornton?

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. Most people over-estimate — stacking boxes and taking furniture apart usually lets a smaller unit do the job. Go a size up only if you have large items that cannot be dismantled, like an appliance or a sofa bed.

Are there climate-controlled storage units in Thornton?

Yes — 6 of the 11 storage facilities in Thornton offer climate-controlled units. Climate control keeps temperatures stable year-round and is recommended for wood furniture, electronics, documents, artwork, and anything sensitive to heat or humidity.