Costco Montclair
9404 Central Ave, Montclair, California 91763-2421
Regular
$4.790
Premium
$5.350
Diesel
N/A
Updated Nov 8, 2026View details →
Costco Gas Prices in Montclair
Latest reported Costco fuel prices in Montclair, California.
- Stations
- 1
- Avg. Regular
- $4.790
- Lowest Regular
- $4.790
- Avg. Diesel
- N/A