Round Rock is the largest suburb of Austin, TX. Round Rock, founded in the 19th century, is a city offering both newer one- or two-story, single-family houses and historic homes. You’ll also find several historic buildings located within the business district of downtown Round Rock. With minor-league baseball, over 30 parks, over 20 miles of hiking and biking, and three college campuses, you’ll never run out of unique and exciting experiences in Round Rock.