The Brown family expanded the company by opening two additional stores in the city and another in Seaside by the start of World War II.

Subsequent owners have included siblings Ron Ertler and Diana Ray, Marc and Ratha Chouinard, and Cyndee Kurahara.

The Brown family expanded the business by opening a store on Southwest Washington Street, another in northeast Portland's Hollywood neighborhood,[2][3] and a location in Seaside.

After her son Lee purchased the business c. 1980, she continued to make candy and caramel apples, caramel and cheese popcorn, peanut butter fudge (from peanut butter and Ghirardelli white chocolate), and peppermint bark (with peppermint candy and flavoring, red food coloring, and white chocolate).

The siblings opened a small manufacturing plant on Northeast Halsey Street in Gresham for wholesale operations to amusement parks, grocery stores, movie theaters, and zoos.

[4] As of 2003–2006, Joe Brown's had a shop on Southwest Sixth Avenue in downtown Portland's Transit Mall, in addition to the Lloyd Center location.

The shop served caramel apples, three varieties of popcorn, and other sweets such as Icees, licorice, mint truffles, and Swedish Fish at the time.

Joe Brown's had an estimated 200–300 daily customers at Lloyd Center at the time, and also supplied products to Enchanted Forest, an amusement park in Turner near Salem, and to the Portland International Airport.

[2] After Betty Brown died in 2005, Starke wrote, "She was 88, but to several generations of Portlanders, the aroma of her family's fresh caramel corn remains eternal.

"[2] In 2015, Matthew Korfhage of Willamette Week said: The caramel is rich and thick and sweet and beautifully crisp, but also a bit variable—in the way of all things homestyle—one kernel a little browner and crisper than the other.