    san juan county is a county located in the u.s. state of new mexico. as of the 2010 census, the population was 130,044. its county seat is aztec. san juan county is part of the farmington, nm metropolitan statistical area. it is located in the northwest corner of the state and includes the new mexico portion of the four corners. ==geography== according to the u.s. census bureau, the county has a total area of 5,538&nbsp;square miles (14,344&nbsp;kmÂ²), of which 5,514&nbsp;square miles (14,281&nbsp;kmÂ²) is land and 24&nbsp;square miles (63&nbsp;kmÂ²) (0.44%) is water. indian reservations (and off-reservation trust lands) comprise 63.4 percent of the county's land area: the navajo indian reservation takes up 60.45% and the ute mountain ute tribe reservation another 2.93%. the physical features include three rivers: the san juan, animas, and la plata rivers; also, the chuska mountains and shiprock pinnacle to the west, volcanic structures, buttes, mesas, badlands, and fertile river valleys. ===adjacent counties=== * rio arriba county, new mexico - east * sandoval county, new mexico - southeast * mckinley county, new mexico - south * apache county, arizona - west * san juan county, utah - northwest (at a single point) * montezuma county, colorado - north * la plata county, colorado - north * archuleta county, colorado - northeast san juan county in new mexico and utah are two of twenty-two counties or parishes in the united states with the same name to border each other ac
New_Mexico_counties San_Juan_County,_New_Mexico