El Oro (Spanish: [el ˈoɾo] ⓘ) is a municipality in the Mexican state of Durango. The municipal seat lies at Santa María del Oro. The municipality covers an area of 10,041 km².
As of 2010, the municipality had a total population of 11,320,[1] up from 10,501 as of 2005.[2]
The municipality had 113 localities, the largest of which (with 2010 population in parentheses) was: Santa María del Oro (5,878), classified as urban.[1]
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