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San Juan County, CO (shown in white) has 387.52 mi² of land area and 0.79 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 8,198.8' to a high of 13,848.4', with a weighted average of 11,366.7' above sea level.
Temperatures range from average lows around -5.2°F to average highs around 79.9°F. A year-round daily temperature averages 36.2°F. Average annual precipation is 36.1". With these temperatures and precipation, the majority of the county scores as an 5A using the USDA Plant Hardiness Zone Map (the standard by which gardeners and growers can determine which perennial plants are most likely to thrive in a location).
The estimated population of San Juan County is 754 with 395 households. These households are spread across single municipalty.