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South region · the Sooner State

Oklahoma OK

Capital

Oklahoma City

Largest city

Oklahoma City

Census region

South

Time zone

Central Time

Joined the Union

1907

Nickname

The Sooner State

Live Here Data — A plain almanac of the fifty states.

Orientation facts for each US state: capital, largest city, census region, time zone, year of statehood and nickname. Compiled from standard public sources. Population rankings move, so read "largest city" as current-era rather than fixed. Laws and taxes by state are a separate matter — consult official state sites.