San Juan -- U.S. County in New Mexico Population (2000): 113801 Housing Units (2000): 43221 Land area (2000): 5514.017199 sq. miles (14281.238377 sq. km) Water area (2000): 24.345231 sq. miles (63.053856 sq. km) Total area (2000): 5538.362430 sq. miles (14344.292233 sq. km) Located within: New Mexico (NM), FIPS 35 Location: 36.577598 N, 108.304060 W Headwords: San Juan San Juan, NM San Juan County San Juan County, NM