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Calvert County, MD (shown in white) has 213.19 mi² of land area and 131.88 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 0' to a high of 177.2', with a weighted average of 55.5' above sea level.
Temperatures range from average lows around 25.8°F to average highs around 87.3°F. A year-round daily temperature averages 57.1°F. Average annual precipation is 48.3". 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 Calvert County is 95,017 with 33,572 households. These households are spread across 14 unique municipalties (not all shown).
