Santa Ana 1850 Census Description
In 1850 Santa Ana County was bounded on the north by Rio Arriba County, east by Santa Fe County, west by the California
line, and south by a line near Bernalillo County. In 1875-76 Santa Ana County was added to Bernalillo County
and the name disappeared. Present area included in the 1850 census is: part of the state of Arizona, and portions
of McKinley, Sandoval, Bernalillo, and Valencia Counties, N.M.