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Charles County, MD (shown in white) has 457.83 mi² of land area and 185.11 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 0' to a high of 206.7', with a weighted average of 78.5' above sea level.
Temperatures range from average lows around 26.2°F to average highs around 88°F. A year-round daily temperature averages 57°F. Average annual precipation is 47.6". With these temperatures and precipation, the majority of the county scores as an 7B 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 Charles County is 175,094 with 62,134 households. These households are spread across 13 unique municipalties (not all shown).