Gas prices in Rapid City, SD
Gas prices in Rapid City, SDDaily metro average from AAA (2026-10-26), per gallon including taxes, for AAA’s Rapid City metro area in South Dakota.
Regular
$4.23
per gallon · €1.00/L
Midgrade
$4.43
per gallon · €1.05/L
Premium
$4.99
per gallon · €1.18/L
Diesel
$6.09
per gallon · €1.44/L
no change vs last week 0.0% vs last week ($4.23) up vs a year ago 43.1% vs a year ago ($2.96)
Nearest South Dakota metros on price
The metros immediately either side of Rapid City in South Dakota, so you can see whether paying $4.23 here is normal or not.
| Metro | Regular | vs Rapid City |
|---|---|---|
| Sioux Falls, SD | $4.11 | −$0.12 |
| North Sioux City, SD | $4.18 | −$0.05 |
| Rapid City, SD | $4.23 | — |
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Tools for drivers in Rapid City
Frequently asked questions
How much is gas in Rapid City right now?
Regular gasoline averages $4.23 per gallon across Rapid City, SD today (AAA metro average, 2026-10-26). Midgrade is $4.43, premium $4.99 and diesel $6.09.
Is gas cheaper in Rapid City than the rest of South Dakota?
A South Dakota state comparison is unavailable today.
Where does Rapid City rank in South Dakota?
Rapid City is the 3rd cheapest of 3 South Dakota metros AAA tracks.
Are gas prices in Rapid City higher than a year ago?
Yes — regular is 43.1% higher than this time last year ($2.96/gal then, $4.23 now).