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Howard County, MD (shown in white) has 250.95 mi² of land area and 2.45 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 49.2' to a high of 849.7', with a weighted average of 439.8' above sea level.
Temperatures range from average lows around 25.4°F to average highs around 87.5°F. A year-round daily temperature averages 55.9°F. Average annual precipation is 49.6". With these temperatures and precipation, the majority of the county scores as an 7A 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 Howard County is 339,732 with 121,247 households. These households are spread across 10 unique municipalties (not all shown).
