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LiveUpdated May 20
Gas prices near 57702
Rapid City, SD · SD average $4.19/gal
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In Rapid City, 57702 gas prices tend to reflect South Dakota's broader market conditions, typically offering more favorable rates than coastal states with stricter fuel regulations. Prices at stations throughout the area fluctuate regularly based on crude oil costs and local supply, so checking current rates before filling up can help you find better deals. The Rapid City market serves as a regional hub in western South Dakota, which influences availability and pricing across Pennington County.
Today’s lowest gas prices in 57702
- 1. Sinclair at 3010 W Main St offers regular at $4.37/gal (10.2 mi away).
- 2. Sinclair at 3540 Sturgis Rd offers regular at $4.37/gal (10.7 mi away).
- 3. Canyon Lake Gas & Auto Care at 3928 Canyon Lake Dr offers regular at $4.43/gal (9.3 mi away).
- 4. Circle K at 2460 W Chicago St offers regular at $4.46/gal (10.6 mi away).
- 5. Exxon at 4128 Jackson Blvd offers regular at $4.49/gal (8.8 mi away).
Prices are aggregated from station-level data and refreshed daily.
Nearby ZIP codes in Rapid City, SD
How to save more on gas in Rapid City
1. Use warehouse clubs
Costco and Sam’s Club typically price 15-25 cents per gallon below nearby stations. Membership pays for itself within a few fill-ups.
2. Fill up early in the week
Stations often raise prices Thursday for weekend demand. Fill up Monday through Wednesday to avoid the lift.
3. Keep tires properly inflated
Properly inflated tires improve fuel economy by up to 3 percent at current prices. Check pressure once a month.
4. Check back tomorrow
Prices can shift 10-20 cents overnight during volatile markets. A quick check before you leave home avoids paying yesterday’s spike.
5. Pay cash at split-pricing stations
Stations with cash and credit split pricing typically save an average of 10 cents per gallon when you pay cash.
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About gas prices in South Dakota
South Dakota draws pipeline supply from refineries in Wyoming (Cheyenne, Sinclair), North Dakota (Mandan), and Minnesota (Pine Bend), with no significant in-state refining. The state gas tax is around 30 cents per gallon. Sioux Falls, Rapid City, and Aberdeen see fairly competitive pricing within the state, with Costco (in Sioux Falls), Sam's Club, Casey's General Store, and Coborn's grocery fuel leading on value. Western South Dakota near the Wyoming border occasionally runs 5 to 10 cents below eastern South Dakota due to shorter pipeline distances from Wyoming refineries. The Black Hills tourist region sees moderate seasonal price increases during summer.