[5][6] Sheetz is the dominant convenience store chain in much of Pennsylvania, holding a virtual monopoly in its native Altoona, and a commanding share of the Pittsburgh, Harrisburg, and Wyoming Valley markets.

It is noticeably absent from Philadelphia and the Delaware Valley, due to the presence of competitor Wawa, leading to a fierce "rivalry" between the two chains among Pennsylvanians, though the two companies themselves have a friendly relationship.

One year later, Sheetz began selling gasoline, and opened the first self-serve gas pumps in central Pennsylvania.

Stanton R. "Stan" Sheetz, Bob's son, became president and Steve assumed the position of chairman of the board in 1995.

In 1997 the company resumed store expansion, expanding into Ohio by opening a location in the Youngstown area along I-80 in Weathersfield Township, just east of Girard.

Sheetz became Pennsylvania's second retail chain to offer E85 ethanol-based fuel alternatives at select stations on July 10, 2006.

Sheetz gained national attention in 2011 when it served as a major sponsor for Morgan Spurlock's film POM Wonderful Presents: The Greatest Movie Ever Sold.

Sheetz actively promoted the film in stores, including selling collector cups, and Altoona even temporarily changed its name to "POM Wonderful Presents: The Greatest Movie Ever Sold, Pennsylvania" for $25,000.

[15] Published in November 2013, Kenneth Womack's Made to Order: The Sheetz Story traces the company's history from its dairy-store origins through the present day.

[17] In 2019, Sheetz opened an IT tech center in Pittsburgh's Bakery Square complex, serving as a secondary headquarters for the company.

Sheetz announced in November 2019 that the chain would expand into Greater Columbus starting in 2021,[23] with plans to open 60 locations in the region by 2025, more than doubling its existing store count in Ohio.

The move will put Sheetz up head-to-head with Casey's for the first time, while also competing with Speedway, Circle K, and UDF in the market.

Sheetz announced in November 2022 that the chain would expand into Michigan, its first new state in over 20 years,[28] beginning in Metro Detroit with a planned opening in 2025.

[30] That month, Sheetz announced they would open a new distribution center in Findlay, Ohio, to support expansions into new markets.

In 2003, Sheetz opened a concept store in the food court of Hanes Mall in Winston-Salem, North Carolina.

In 2007, Sheetz tried to find a loophole around this by classifying part of one of their prototype stores in Altoona as a restaurant, which would permit alcohol sales.

[56] The Malt Beverage Distributors Association of Pennsylvania protested and Sheetz was temporarily barred from selling beer.

On June 15, 2009, the Pennsylvania Supreme Court gave Sheetz permission to sell beer for takeout under the condition that it is also available to drink on site.

In Pennsylvania, Sheetz is the market leader in all fuel sales at over 21%, ahead of all other competitor convenience store chains including those selling fuel from Big Oil brands such as Exxon, Sunoco, and BP, all of which have a major presence in Pennsylvania alongside Sheetz.

At one point, Sheetz sold its own brand of cigarettes called Jack's (named and themed after the type of playing card), but stopped offering them in the 2010s in their stores.