We're a veteran owned business serving local beef burgers and delicious shakes to the greater Portland area from right within splendor that is the Mississippi Street Food Pod. We strive to bring the same level of perfection that you'd expect from the nation's finest.

Simplicity does not have to beget mediocrity

Hours and Location

Mississippi Marketplace
4233 N Mississippi Ave
Check our Facebook(usually open by noon)
Late nights: Fri, Sat - till close

Check our facebook page for the most updated hours
Send us an e-mai


The guys are constantly working on the menu so for the best options check our instagram or swing on by the cart.

About Us:

503 Burger Co. is the creation of Chef Johnny, O and Pete"The Grill Master". Johnny and O are both Oregon Culinary Institute Graduates and USAF Veterans  (Johnny, Fire Protection, and O, Security Forces) and the Grill Master has over 13 years of experience in the kitchen. They had an idea of a food cart with the goal of a simple yet effective take on a home grown classic "The Burger". 

Johnny moved to Portland, OR in 2014 to pursue a passion for the culinary arts and O relocated shortly after his service in the USAF in 2012 also to take a shot at his long time love for cooking. The two meet during a Culinary management class at OCI and hit it off. From there O took a job at a local restaurant then Johnny got a job shortly after at the same place. There they met "The Grill Master"  and the rest will soon be history...