Proper noun
One of 64 counties in Colorado, United States. County seat: La Junta.
One of 33 counties in New Mexico, United States. County seat: Alamogordo.
Source: en.wiktionary.orgA highlight of the trip included an ICE-led tour of the Otero County Processing Center in Chaparral, N.M., 30 miles northeast of El Paso. Source: Internet
The County Commissioners from Otero County have been very cooperative. Source: Internet