Used GMC for Sale in O'Fallon, MO

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$73,380
$73,380 above
$2,159/mo est. ?
0 km

O'Fallon Buick GMC

63368, O'Fallon MO

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$58,520
$58,520 above
$1,722/mo est. ?
0 km

O'Fallon Buick GMC

63368, O'Fallon MO

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$7,490
$7,490 above
$221/mo est. ?
362,665 km 5.3L

Mattern Automotive

4.4 Google 49 reviews

63366, O Fallon MO

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$51,995
$51,995 above
$1,533/mo est. ?
126,731 km 6.2L

63366, O Fallon MO

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$4,950
$4,950 above
$146/mo est. ?
141,926 km 3.6L

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5.0
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1 review
3.7 Google 199 reviews

63044, BRIDGETON MO

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$41,995
$41,995 above
$1,238/mo est. ?
43,657 km 6.6L

63366, O Fallon MO

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$44,499
$44,499 above
$1,312/mo est. ?
53,766 km

63303, St Charles MO

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$23,999
$23,999 above
$708/mo est. ?
79,202 km

63011, Manchester MO

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$40,499
$40,499 above
$1,194/mo est. ?
52,580 km

63011, Manchester MO

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251,055 km

Clement Supercenter

63303, Saint Charles MO

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$12,899
$12,899 above
$380/mo est. ?
257,462 km 2.0L

Mathis Motors

63304, St Charles MO

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$26,500
$26,500 above
$781/mo est. ?
177,867 km

South County Dodge Chrysler Jeep

4.3 Google 1747 reviews

63125, St Louis MO

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$69,355
$69,355 above
$2,041/mo est. ?
2 km

Jim Trenary of Union

63084, Union MO

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38,486 km

Elco Cadillac

4.5 Google 205 reviews

63011, Ballwin MO

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57,161 km

Elco Cadillac

4.5 Google 205 reviews

63011, Ballwin MO

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32,485 km

Elco Cadillac

4.5 Google 205 reviews

63011, Ballwin MO

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$17,810
$17,810 above
$525/mo est. ?
286,638 km

Wright City Motors

63390, Wright City MO

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$60,995
$60,995 above
$1,799/mo est. ?
41,189 km

Jaguar Chesterfield

63005, Chesterfield MO

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166,058 km 1.5L

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Authorized EpicVIN dealer

5.0
Star icon
1 review
3.7 Google 199 reviews

63044, BRIDGETON MO

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208,978 km 3.6L

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Authorized EpicVIN dealer

5.0
Star icon
1 review
3.7 Google 199 reviews

63044, BRIDGETON MO

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Get a price quote
115,309 km 6.6L

A Better Bid Online Car Auctions

Authorized EpicVIN dealer

5.0
Star icon
1 review
3.7 Google 199 reviews

63044, BRIDGETON MO

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$95,604
$95,604 above
$2,813/mo est. ?
3 km 6.2L

Dave Sinclair Buick GMC

63123, St Louis MO

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$79,903
$79,903 above
$2,351/mo est. ?
2 km 6.2L

Dave Sinclair Buick GMC

63123, St Louis MO

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$93,425
$93,425 above
$2,749/mo est. ?
0 km 3.0L

Dave Sinclair Buick GMC

63123, St Louis MO

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Frequently Asked Questions

Our marketplace currently lists 1,461 used cars in O'fallon, MO from dealers and private sellers. Prices range from $6,672 to $108,420.

Top brands by active listings in O'fallon, MO are Gmc. The mix often reflects local buying preferences.

The average listed price in O'fallon, MO is $61,615. Browse by budget: under $10,000, under $20,000, or under $30,000.

No — you can buy from a seller in O'fallon, MO regardless of your state of residence. You'll need to register and title the vehicle in your home state within the required window (usually 30 days). Local dealers typically handle paperwork for out-of-state buyers.

Yes — popular nearby options include cities across the state. You can also browse all used cars in Missouri.