18 U.S. Cities With The Worst Credit Scores. Is Your City One Of Them? Photo credit: CC license by Matthew Rutledge 3. Oklahoma City, Oklahoma As in Tulsa, residents in Oklahoma City struggle with credit card debt. However, the average balance in Oklahoma City is somewhat lower than that of Tulsa, clocking in at $4,360. If only residents of this next city would take debt payments lessens from residents of OKC, they probably wouldn’t be hurting so bad… Prev3 of 19Next Facebook Comments comments