Graham Enterprise Inc. (GEI) has company-owned and -operated sites in northern Illinois, as well as rollover conveyor car washes in and around Arlington Heights, Illinois. Its Trio stores feature freshly baked cinnamon rolls, freshly brewed coffee, handcrafted fresh pizzas, specialty craft beers and more. It prides itself on its pristine and clean stores, according to its website.
GEI offers the Amoco, bp, Exxon, CITGO, Marathon, Mobil and Shell fuel brands.
For benchmarking purposes, store counts are as of Jan. 1, 2026.
| Headquarters: | Vernon Hills, Illinois |
|---|---|
| No. of Stores: | 37 |
| Rank: | 169 |
| Rank Last Year: | 199 |
| Website: | http://www.grahamei.com |