2023 Orange County event list of festivals, fairs, concerts, and sporting events. Whether you’re a local, new in town, or just visiting, you’ll be sure to find something. Orange County serves up scores of events all year long. From professional sports to community festivals, there’s something for everyone almost any day of the week. OC is one of the largest counties in the country, packed with diversity and destinations unlike anywhere else making it possible to enjoy all that this corner of Southern California has to offer.