×Updated May 21, 2026 — Prices updated regularly from EIA data
Average Regular Unleaded — Nampa, Idaho
At $$3.10 per gallon, Nampa's current gas prices are $0.08 below the Idaho average both the Idaho average and the national benchmark. Savvy Nampa drivers know where to find the best prices in town.
| Fuel Type | Price / Gallon | Grade | Trend |
|---|---|---|---|
| Regular Unleaded | $3.10 | 87 octane | ▼ Falling |
| Mid-Grade | $3.50 | 89 octane | ▲ Rising |
| Premium | $3.76 | 91-93 octane | ▬ Stable |
| Diesel | $3.86 | N/A | ▼ Falling |
For Nampa commuters filling up weekly, choosing the right station matters. Annual fuel spending for a 15-gallon weekly fill-up at ${price}/gallon totals roughly ${annualCost}. Cutting 10 cents per gallon through strategic choices saves about $78 annually — real money with zero sacrifice.
Estimated prices based on brand modifiers. Sorted cheapest to most expensive.
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