Whataburger opened its third location in Round Rock on May 17 at 17000 N. RM 620, near the intersection at O’Connor Drive. The fast-food chain serves burgers and breakfast and opened in 1950 in Corpus Christi. The other two locations in Round Rock are at 1501 S. I-35 and 4640 E. Palm Valley Blvd. 512-394-8361. https://locations.whataburger.com/tx/round-rock/17000-n-rm-620.html