41st Annual Onawa Swap Meet & Flea Market Weekend August 19-20 at the Monona County Fairgrounds in Onawa, Iowa (Located just 35 miles South of Sioux City or 65 Miles North of Omaha right off I-29). Something for everyone!!! OVER 300 VENDOR SPACES SOLD LAST YEAR with people traveling from 7 different states to attend!!! Vendor Spaces still available! FREE parking, FREE spectator entry. Free-Will Donation Breakfast Both Mornings and food vendors and more going on throughout the weekend!!! For more information look up Onawa Swap Meet & Flea Market Weekend on Facebook or you can call us 712-423-2411 weekdays before 4pm.