Rio Arriba County is located on the northern border of New Mexico. This interesting county was named after its location on the upper Rio Grande (Río Arriba means up the river in Spanish). The county seat of Rio Arriba County is Tierra Amarilla. The county's area is 5,858 square miles. Founded in 1852, today Rio Arriba County is home to 40 thousand Americans. This map shows the borders of Rio Arriba County as well as neighboring counties, including major highways and natural objecsts as of 2025. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Rio Arriba County.
The borders of Rio Arriba County over the map of New Mexico
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