Morenci is located in central Greenlee County at . It lies on the northeaster border of the town of Clifton, the county seat. U.S. Route 191 passes through the northern part of the community, leading east and downhill into Clifton and north through the Apache National Forest to Eagar. According to the United States Census Bureau, the Morenci CDP has a total area of, of which is land and, or 2.23%, is water.
As of the census of 2000, there were 1,879 people, 672 households, and 454 families residing in the CDP. The population density was 2,317.4 people per square mile. There were 754 housing units at an average density of 929.9 per square mile. The racial makeup of the CDP was 67.96% White, 0.48% Black or African American, 2.13% Native American, 0.53% Asian, 0.05% Pacific Islander, 24.91% from other races, and 3.94% from two or more races. 44.54% of the population were Hispanic or Latino of any race. There were 672 households out of which 45.7% had children under the age of 18 living with them, 56.7% were married couplesliving together, 6.1% had a female householder with no husband present, and 32.3% were non-families. 30.8% of all households were made up of individuals and 0.7% had someone living alone who was 65 years of age or older. The average household size was 2.80 and the average family size was 3.55. In the CDP, the population was spread out with 35.6% under the age of 18, 7.2% from 18 to 24, 34.4% from 25 to 44, 22.1% from 45 to 64, and 0.6% who were 65 years of age or older. The median age was 30 years. For every 100 females, there were 119.0 males. For every 100 females age 18 and over, there were 128.7 males. The median income for a household in the CDP was $46,010, and the median income for a family was $54,583. Males had a median income of $41,875 versus $26,063 for females. The per capita income for the CDP was $18,695. About 2.7% of families and 3.0% of the population were below the poverty line, including 2.9% of those under age 18 and none of those age 65 or over.
Economy
The economy of Morenci as well as that of the surrounding area is almost completely dependent on the Morenci Mine. Between 2003 and 2008, the worldwide rise in copper prices led the mine to double its work force to 4,000 employees and increase production by 55 percent to an average of one million tons of ore per day. Several hundred new homes were built, leading to a boom in the construction industry. All the homes in Morenci, new and old, remain owned by Freeport-McMoRan.
The Marines of Morenci were the nine graduates of Morenci High who enlisted as a group in the Marine Corps. Their service began on Independence Day, 1966. Only three returned home.