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Maricopa County, Arizona Census Records

Maricopa County was formed in 1871 from Pima, Yavapai, and Yuma Counties.

1880 Maricopa County, Arizona Census

1890 Maricopa County, Arizona Census

1900 Maricopa County, Arizona Census

1910 Maricopa County, Arizona Census

1920 Maricopa County, Arizona Census

1930 Maricopa County, Arizona Census