Pecos is an unusual and distinctive given name of American origin. It is derived from the Spanish word "pecoso," which means "freckled." The name Pecos gained popularity in the United States, particularly in the Southwest region, due to its association with the Pecos River that flows through Texas and New Mexico. This river played a significant role in the expansion of the American West during the 19th century, contributing to the name's historical significance. Despite its unique origin and meaning, there are no specific days set aside for celebrating the name Pecos, nor are there widely recognized personality traits associated with individuals bearing this name.
"Pecos saw a notable dip in births between 1979 and 1987, with only five occurrences each year, before picking up again in 2012 at six births. Since then, the birth rate has fluctuated but has been consistently higher, reaching nine in 2015 and eight or more annually since 2017, culminating in a total of 46 births over these periods."