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Cowlitz County, WA (shown in white) has 1,141.16 mi² of land area and 25.27 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 0' to a high of 4,799.9', with a weighted average of 1,335.1' above sea level.
Temperatures range from average lows around 32.6°F to average highs around 81.8°F. A year-round daily temperature averages 52.6°F. Average annual precipation is 75.1". 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 Cowlitz County is 113,584 with 43,925 households. These households are spread across 10 unique municipalties (not all shown).
