Shiprock (Tsé Bitʼaʼí, "rock with wings") is a 27 million year old volcanic rock formation, designated as a National Natural Landmark, rising 1,583 feet above the desert.
Bisti/De-Na-Zin Wilderness (Bisti Badlands) is a 45,000-acre wilderness area full of rock formations made of sandstone, shale, mudstone, and silt.
The San Juan River is a 383 mile long major tributary of the Colorado River and a primary drainage for the Four Corners.
The Aztec Ruins National Monument, on 318 acres, consists of dwellings and sacred structures built by Ancient Pueblo Indians in the 12th and 13th Centuries.
Navajo Lake is a 3800 feet long and 400 feet deep reservoir located in northeastern San Juan County, created from a dam completed in 1962.
The eggs and hoodoos in the Bisti Wilderness were formed in sand and silt revealed 73 million years ago when the Western Interior Seaway receded.
Angel Peak Scenic Area is located 15 miles south of Bloomfield in San Juan County, with over 10,000 acres of rugged terrain, badlands and deep canyons.
The La Plata Mountains, seen from San Juan County, are a small subrange of the San Juan Mountains in sw Colorado, and includes Hesperus Mountain at 13,332 feet.

Population


San Juan County's estimated population size is 124k, similar to what it was in 2009, prior to a peak in 2010.
0,958
2019 Estimated Population
0,801
2000 Census
0,044
2010 Census

Population Change

San Juan County experienced steady population growth through 2010, when it reached just over 130,000 residents. Since 2010, there has been a 4.8% decrease. The population of New Mexico increased 1.8% since 2010. (See notes for other estimates.)
U.S. Bureau of the Census, American Community Survey, 2019 1-year Estimate
Census: (TableID: PEPANNRES): Direct Link for 1-year estimates
and for 5-year ACS Estimates (TableID: DP05)

Historical Population Estimates retrieved from FRED Federal Reserve Bank.
https://fred.stlouisfed.org/series/NMSANJ0POP 

Historical Population Estimates are also available from New Mexico-IBIS:
https://ibis.health.state.nm.us/query/selection/pop/_PopSelection.html
They are the official 1-year estimates used in the New Mexico Department of Health, and are produced by the University of New Mexico Geospatial and Population Studies (GPS) program:
http://gps.unm.edu/data/population-research-unit/population-estimates
The 1-year estimate of 123,958 is most recent, but has a wider margin of error. The 5-year ACS population estimate is 126,515. 

The 2019 estimate from the University of New Mexico, Geospatial and Population Studies (GPS) Program is 126,122.

The 2019 estimate from the Census Small Area Income and Population Estimates is 122,191.

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