The Population & Steets in Winanamac City are fascinating, but are you curious to learn more about this small town in Oklahoma? If you have, read this article. Here are some statistics to help you make your decision. You might also be interested in this local history. The Mound-Builders lived here in the early 1800s, before the arrival of the Indians. These people built a large number of mounds, but were eventually destroyed by the Indians.