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Columbia County, WA (shown in white) has 868.59 mi² of land area and 4.85 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 518.4' to a high of 6,391.1', with a weighted average of 2,806.6' above sea level.
Temperatures range from average lows around 24.4°F to average highs around 89.5°F. A year-round daily temperature averages 50.7°F. Average annual precipation is 33.4". With these temperatures and precipation, the majority of the county scores as an 7A 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 Columbia County is 4,032 with 1,801 households. These households are spread across 2 unique municipalties (not all shown).
