The U.S. city of Oklahoma City, Oklahoma once had a historic original Chinatown that existed from the 1870s "... below 14 S Robinson Ave" according to the Oklahoman, the city's major metro newspaper. The population of the old Chinatown was somewhere between 200 to 250 Chinese people.
Many Chinese who came to Oklahoma City did so from the U.S. state of California, with many specifically from the San Francisco bay area. Many of the Chinese residents were "discreet" and chose to "avoid attention" by often "...living underground" in tunnels constructed in the area now known as the Cox Convention Center (aka Myriad Convention Center).
Around the mid-1980s, a new area known as Asia District (then itself a Little Saigon) was home to more than 17,000 Vietnamese refugees that inhabited the area at that time. The area represented a new trend in major cities of the United States that traditionally have not had a concentrated Asian population, where recent immigrants would inhabit previously blighted areas. Located near Oklahoma City University, Asia District was once a blighted urban area and today is inhabited by Vietnamese, Korean, Philippine, Thai, and Chinese immigrants.