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Washtenaw County, MI (shown in white) has 706 mi² of land area and 16.42 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 646.3' to a high of 1,099.1', with a weighted average of 877.9' above sea level.
Temperatures range from average lows around 15.4°F to average highs around 84.4°F. A year-round daily temperature averages 48.8°F. Average annual precipation is 36.6". With these temperatures and precipation, the majority of the county scores as an 6A 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 Washtenaw County is 372,065 with 147,474 households. These households are spread across 8 unique municipalties (not all shown).
