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Trinity County, CA (shown in white) has 3,179.27 mi² of land area and 28.34 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 400.3' to a high of 8,891.1', with a weighted average of 3,804.5' above sea level.
Temperatures range from average lows around 29.1°F to average highs around 96.2°F. A year-round daily temperature averages 55.1°F. Average annual precipation is 46.2". With these temperatures and precipation, the majority of the county scores as an 8A 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 Trinity County is 15,593 with 6,113 households. These households are spread across 14 unique municipalties (not all shown).