No that was OKC proper (which extends into four counties total.) Oklahoma County was Trump 49.2-Biden 48.1.
And a good chunk of the non-OKC parts of Oklahoma County are Democratic or competitive. Spencer (majority black) is a Democratic stronghold at 73.8-23.6 Biden, Biden also won Midwest City 49.6-47.4, The Village 51.8-45.4, and Warr Acres 48.8-48.2, Del City was only narrowly Trump at 47.5-49.2, Bethany was only 38.6-58.0 Trump and even Edmond had some Biden precincts while being 35.7-61.5 overall. Meanwhile the areas of OKC in Cleveland County and Canadian County are substantial and uniformly Republican, more so than Edmond. (There are some super-R areas in Oklahoma County that are not in OKC, too, including Choctaw and most of the unincorporated areas, but those are much less populous than the OKC areas outside of Oklahoma County.)
Biden did win the Oklahoma County parts of OKC 53.8-43.5.
