Jaroso

Jaroso is an unincorporated community and a U.S. Post Office located in Costilla County, Colorado, United States. The Jaroso Post Office has the ZIP Code 81138.[2]

A post office called Joroso has been in operation since 1911.[3] Jaroso is a name derived from Spanish meaning "willows".[4]

Jaroso is located at 37°00′14″N 105°37′26″W  /  37.00389°N 105.62389°W  / 37.00389; -105.62389 (37.003924,-105.623760).