Pirtleville is a census-designated place in Cochise County, Arizona, United States. The population was 1,744 at the 2010 census.Pirtleville is located at 31°21′32″N 109°33′58″W / 31.35889°N 109.56611°W / 31.35889; -109.56611.According to the United States Census Bureau, the CDP has a total area of 1.8 square miles, all land.As of the census of 2000, there were 1,550 people, 454 households, and 361 families residing in the CDP. The population density was 861.2 people per square mile. There were 531 housing units at an average density of 295.0 per square mile. The racial makeup of the CDP was 53.23% White, 0.65% Black or African American, 1.29% Native American, 0.52% Asian, 0.26% Pacific Islander, 41.35% from other races, and 2.71% from two or more races. 95.03% of the population were Hispanic or Latino of any race.There were 454 households out of which 43.2% had children under the age of 18 living with them, 57.7% were married couples living together, 15.