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Washington County, MD (shown in white) has 457.78 mi² of land area and 9.58 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 249.3' to a high of 2,050.5', with a weighted average of 637.5' above sea level.
Temperatures range from average lows around 22.6°F to average highs around 87.2°F. A year-round daily temperature averages 54°F. Average annual precipation is 43.9". With these temperatures and precipation, the majority of the county scores as an 6B 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 157,364 with 59,685 households. These households are spread across 61 unique municipalties (not all shown).
