The two oldest continuously lived in communities in the United States are Old Oraibi, Arizona (Hopi community) and Acoma Pueblo, New Mexico. In 1987 these two communities were 800 years old.
Tucson is an old continuously lived in community. There is no final proof for how long humans have lived in this area. "It is believed that Tucson area ranks as the longest continuously inhabited region stretching back for at least 4,000 years."
"Oldest U.S. settlement thrives in two locations." Arizona Daily Star. February 1, 1987. Page B1.
"Layers of history found at mission dig." Tucson Citizen. April 13, 2007. Page A7.
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