Costco gas prices in Idaho
Idaho average
- Regular
- $3.928
- Premium
- $4.425
- Diesel
- $4.629
Average across 7 stations, per gallon · updated July 22, 2026
Costco has 7 gas stations in Idaho — the cheapest regular today is $3.859/gal at Costco Coeur d Alene in Coeur D' Alene. Idaho Costco regular prices have fallen about $0.104 per gallon over the past month, from $4.032 to $3.928. Premium is down $0.094 over the same stretch, now at $4.425. Diesel is down $0.110 over the same stretch, now at $4.629.
Gas stations
7
Idaho
Avg regular
$3.928
per gallon, USD
Cheapest now
$3.859
Costco Coeur d Alene
30-day price trend
Regular$3.928Premium$4.425Diesel$4.629
View price history as a table
| Date | Regular | Premium | Diesel |
|---|---|---|---|
| July 22, 2026 | $3.928 | $4.425 | $4.629 |
| July 21, 2026 | $3.862 | $4.362 | $4.579 |
| July 20, 2026 | $3.862 | $4.362 | $4.529 |
| July 19, 2026 | $3.858 | $4.358 | $4.459 |
| July 18, 2026 | $3.859 | $4.359 | $4.434 |
| July 17, 2026 | $3.822 | $4.316 | $4.399 |
| July 16, 2026 | $3.822 | $4.305 | $4.399 |
| July 15, 2026 | $3.846 | $4.322 | $4.399 |
| July 14, 2026 | $3.829 | $4.310 | $4.429 |
| July 13, 2026 | $3.835 | $4.316 | $4.429 |
| July 12, 2026 | $3.829 | $4.332 | $4.399 |
| July 11, 2026 | $3.842 | $4.339 | $4.349 |
| July 10, 2026 | $3.823 | $4.312 | $4.349 |
| July 9, 2026 | $3.813 | $4.310 | $4.349 |
| July 8, 2026 | $3.803 | $4.285 | $4.329 |
| July 7, 2026 | $3.853 | $4.310 | $4.359 |
| July 6, 2026 | $3.859 | $4.322 | $4.379 |
| July 5, 2026 | $3.876 | $4.328 | $4.359 |
| July 4, 2026 | $3.876 | $4.328 | $4.359 |
| July 3, 2026 | $3.876 | $4.336 | $4.359 |
| July 2, 2026 | $3.888 | $4.356 | $4.459 |
| July 1, 2026 | $3.885 | $4.372 | $4.449 |
| June 30, 2026 | $3.902 | $4.369 | $4.549 |
| June 29, 2026 | $3.916 | $4.395 | $4.549 |
| June 28, 2026 | $3.916 | $4.420 | $4.549 |
| June 27, 2026 | $3.926 | $4.435 | $4.549 |
| June 26, 2026 | $3.945 | $4.439 | $4.599 |
| June 25, 2026 | $3.976 | $4.478 | $4.649 |
| June 24, 2026 | $3.990 | $4.485 | $4.699 |
| June 23, 2026 | $4.032 | $4.519 | $4.739 |
All stations in Idaho
All 7 stations, sorted by regular price from lowest to highest. Prices in $/gal.
| Rank | Station | Regular | Premium | Diesel |
|---|---|---|---|---|
| 1 | Costco Coeur d AleneCoeur D' Alene | $3.859 | $4.359 | $4.759 |
| 2 | Costco NampaNampa | $3.859 | $4.399 | — |
| 3 | Costco Idaho FallsIdaho Falls | $3.899 | $4.399 | $4.499 |
| 4 | Costco BoiseBoise | $3.959 | $4.399 | — |
| 5 | Costco MeridianMeridian | $3.959 | $4.399 | — |
| 6 | Costco PocatelloPocatello | $3.959 | $4.459 | — |
| 7 | Costco Twin FallsTwin Falls | $3.999 | $4.559 | — |