Sunkist Bakery is home to Siouxland's best yeasted donuts, and it's also Sioux City's oldest bakery still in operation. It's also one of my personal faves! Here's what you should know about Sunkist Bakery: Where is Sunkist Bakery? Sunkist Bakery is located at 4607 Morningside Avenue in Sioux City, IA, just a few blocks from Morningside University and the Morningside branch library. There is ample free parking in Sunkist's lot, and there is additional free parking on the streets surrounding the bakery. History of Sunkist Bakery Sunkist Bakery has been making delicious food since 1932, making it the oldest bakery in Sioux City that's still in operation. They've supplied many local restaurants with rolls, pizza dough, and other dough and bread varieties throughout their decades of operation and continue to do so in the 2020s. According to the owners , Sunkist uses around 6,000 pounds of flour every week...