New Mexico Office of the State Historian : Rio Arriba County--J. J. Bowden

Rio Arriba County--J. J. Bowden

Julyan:
Rio Arriba County is in north central New Mexico, abutting the Colorado border. The county seat is Tierra Amarilla. Rio Arriba County preserves the name the early Spaniards used when referring to this region, Upper River. The county was one of the seven original partidos under Spanish rule. The county, formalized in 1852, was created from the Mexican departamento of Rio Arriba, created by the Mexican government in 1836; its capital was Los Luceros, which was the Rio Arriba County seat from 1855 to 1860, when the county seat was moved to Tierra Amarilla, where it has remained. The county was enlarged in 1880 to include lands west to the Arizona border, but it assumed its present boundaries in 1897 with the creation of San Juan County, though a southwest section later was added to Sandoval County.

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