San Juan County | |
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![]() San Juan County Administration Building in Aztec | |
![]() Location within the U.S. state of New Mexico | |
![]() New Mexico's location within the U.S. | |
Coordinates: 36°31′N 108°19′W / 36.51°N 108.32°W | |
Country | ![]() |
State | ![]() |
Founded | February 24, 1887 |
Named for | San Juan River |
Seat | Aztec |
Largest city | Farmington |
Area | |
• Total | 5,538 sq mi (14,340 km2) |
• Land | 5,513 sq mi (14,280 km2) |
• Water | 25 sq mi (60 km2) 0.5% |
Population (2020) | |
• Total | 121,661 |
• Density | 24/sq mi (9/km2) |
Time zone | UTC−7 (Mountain) |
• Summer (DST) | UTC−6 (MDT) |
Congressional district | 3rd |
Website | www |
San Juan County (Spanish: Condado de San Juan) is a county located in the U.S. state of New Mexico. As of the 2020 census, the population was 121,661[1] making it the fifth-most populous county in New Mexico. Its county seat is Aztec.[2] The county was created in 1887.[3]
San Juan County is part of the Farmington, New Mexico, Metropolitan Statistical Area. It is in the state's northwest corner and includes the New Mexico portion of the Four Corners.