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Washington County, MN (shown in white) has 384.72 mi² of land area and 38.59 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 679.1' to a high of 1,099.1', with a weighted average of 925.4' above sea level.
Temperatures range from average lows around 5.5°F to average highs around 83.1°F. A year-round daily temperature averages 45.3°F. Average annual precipation is 33.9". With these temperatures and precipation, the majority of the county scores as an 4B 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 Washington County is 283,978 with 105,517 households. These households are spread across 25 unique municipalties (not all shown).