Oswego’s four-day community celebration is brought to you by the Oswegoland Park District, generous business sponsors, civic organizations, and hundreds of volunteers. We warmly invite you to be a part of PrairieFest. Whether supporting the festival, hosting an event, or participating in the fun, there’s a place for you. PrairieFest events are held throughout Oswego with the main festival grounds located at PrairieFest Park, 91 Plank Road, Oswego, IL. Find more information at PrairieFest.com