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Jefferson County, MS (shown in white) has 519.93 mi² of land area and 7.33 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 26.3' to a high of 518.4', with a weighted average of 261.1' above sea level.
Temperatures range from average lows around 35.4°F to average highs around 93.6°F. A year-round daily temperature averages 65.4°F. Average annual precipation is 61.5". With these temperatures and precipation, the majority of the county scores as an 8B 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 Jefferson County is 7,308 with 2,885 households. These households are spread across single municipalty.
