St. Clair County car sales tax: 5.225% to 8.1%

The rate in St. Clair County

Vehicle sales tax in St. Clair County is not a single number — it runs from 5.225% to 8.1% depending on which city you register in. Most of the county is at 5.225%.
That is below the 6.725% most Missouri counties charge — about $525.00 less tax on a $35,000 car than the typical county in the state.
2 other counties in Missouri charge the same rate, out of 115.

Where the rate changes inside St. Clair County

8.1% — Appleton City.
7.475% — Lowry City.
5.225% — Appleton City (outside city limits), Collins, Deepwater (outside city limits), Humansville (outside city limits), Ionia (outside city limits), Lowry City (outside city limits), Osceola, Rockville (outside city limits) and 2 more.
This is why a county-wide figure is not enough here: two addresses in St. Clair County can carry different tax on the same car, and in 2 of its ZIP codes the boundary runs through the middle so the ZIP alone cannot settle it. The calculator asks you which side you are on.

What a $35,000 car actually costs in St. Clair County

Sales tax (5.225% — Appleton City (outside city limits), St. Clair County) — $1,861.19
Doc fee (state cap) — $620.79
Title fee — $8.50
Title processing fee — $9.00
Registration (by horsepower) (est.) — $21.25
Registration processing fee — $9.00
Temporary permit — $5.00
Out the door — $37,534.73 on a $35,000 used car, before any down payment or financing.

ZIP codes in St. Clair County

64724, 64738, 64740, 64763, 64776, 64780, 64781, 65335, 65674, 65774.
Any of these resolves to St. Clair County in the calculator, at whichever of the county's rates applies to that ZIP.

St. Clair County against nearby counties

Phelps County is 5.35% — $43.75 MORE tax on a $35,000 car than St. Clair County.
Laclede County is 5.413% — $65.80 MORE tax on a $35,000 car than St. Clair County.

Run your own numbers

Vehicle price

$

The negotiated (or advertised) selling price, before fees and tax.

Your ZIP code

Tax and registration follow where YOU register — not the dealership.

Condition

New Used CPO

Fuel

EV/PHEV surcharges apply in many states.

More options — trade-in, rebates, doc fee, add-ons

Trade-in value

$

Reduces your taxable amount only in states that allow it.

Trade-in loan payoff

$

Display-only in the equity math — doesn't affect tax.

Manufacturer rebate

$

Taxed in some states, a tax-free discount in others.

Dealer discount

$

Off-invoice discount from the dealer — different from a rebate for tax.

Dealer doc fee (if quoted)

$

Leave blank to use your state's cap or the typical amount.

Dealer add-ons total

$

Nitrogen, VIN etch, protection packages… labeled negotiable in the output.

F&I products total (VSC, GAP…)

$

Excluded from tax in some states when itemized separately.

Model year

MSRP / vehicle value

$

Needed in states with value-based registration (AZ VLT, NV GST).

Financing the purchase I have a plate to transfer (matters in Florida — skips the $225 initial registration)

Truck / commercial (California weight fees)

Vehicle type

Pickups always use the unladen-weight schedule (VC §9400) — never CVRA.

Curb (unladen) weight, lbs

On the door-jamb sticker. Blank = typical half-ton bracket ($80).

Axles

Declared GVW/CGW, lbs

As declared on the REG 4008. CVRA vehicles skip the TIF.

Used vehicle details (California)

Plate expiration (month)

Expired or expiring within 120 days of purchase → renewal fees ride along with the deal. Blank = assume they're due (safe estimate).

No current California plates (out-of-state car — full first registration + smog test due)

My price already includes…

Some dealers now fold fees into the advertised price (FTC pressure; California's total-price law). Check what yours covers so nothing gets counted twice.

Doc fee Emissions / smog testing charge (used vehicles)

Common questions

Why is the car sales tax different in parts of St. Clair County?

Cities inside the county can levy their own rate on top of the county and state rate, so the combined figure changes at the city line. In St. Clair County it ranges from 5.225% to 8.1%.

What is the car sales tax rate in St. Clair County?

It ranges from 5.225% to 8.1% depending on the city; most of the county is 5.225%.

How much is tax and fees on a $35,000 car in St. Clair County?

About $2,534.73 on top of the price, bringing it to roughly $37,534.73 out the door. The breakdown is above.

St. Clair County car sales tax: 5.225% to 8.1%

The rate in St. Clair County

Where the rate changes inside St. Clair County

What a $35,000 car actually costs in St. Clair County

ZIP codes in St. Clair County

St. Clair County against nearby counties

Run your own numbers

Common questions

Why is the car sales tax different in parts of St. Clair County?

What is the car sales tax rate in St. Clair County?

How much is tax and fees on a $35,000 car in St. Clair County?

Elsewhere in Missouri

Bates County

Vernon County

Phelps County

Laclede County

Butler County

Full Missouri out-the-door guide

How Missouri sales tax works