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San Luis Obispo County, CA (shown in white) has 3,300.85 mi² of land area and 314.92 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 0' to a high of 5,000', with a weighted average of 1,416' above sea level.
Temperatures range from average lows around 35.1°F to average highs around 91.5°F. A year-round daily temperature averages 60.6°F. Average annual precipation is 16". With these temperatures and precipation, the majority of the county scores as an 9B 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 Luis Obispo County is 283,810 with 108,370 households. These households are spread across 30 unique municipalties (not all shown).