Even though it's the county seat of Harding County, Mosquero is a small hamlet straddling the county line between Harding and San Miguel Counties. This is primarily a big cattle ranching area on the high plains of northeastern New Mexico.

Driving La Frontera del Llano in the summer of 2011, I was surprised at how big Mosquero seemed when compared to the population figures. I was also surprised that I found no gas station in town. The maps had shown a couple spots along the road that used to be: Mills and Solano in particular. Solano still had a church, Mills a Post Office, but neither had much else. I'd say Harding County has a hard time holding onto its population...