Kelley's Market & Which Wich

About Us

Since 1926, Kelley Williamson Company has set the standard for quality products and service, growing from its beginnings as Rockford Oil Company into a convenience store leader, trusted Mobil fuels and lubricants distributor, and active community partner. Early expansion across the region helped establish the Kelley Williamson name as synonymous with dependable fueling throughout Northern Illinois and Southern Wisconsin.

In the 1980s and 1990s, the company evolved once more, transitioning from traditional service stations and fuel distribution into operating convenience store locations known for clean, quick shopping experiences, like the Kelley’s Markets you see today. Throughout this growth, our fuel distribution and lubricant sales continued to be industry leaders.

Today, that growth has not halted. With the newest Kelley’s Market station opening in Island Lake, Illinois, in December 2025, Kelley Williamson Company is reaching new heights and serving more communities than ever before while remaining family owned and locally operated. We extend our gratitude to our loyal customers, our dedicated employees who keep us running in all conditions, and the communities that welcome and support our efforts.

100 years strong with miles ahead. Thank you for traveling with us.