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St. Charles Parish, LA (shown in white) has 277.74 mi² of land area and 119.16 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 0' to a high of 23', with a weighted average of 1.5' above sea level.
Temperatures range from average lows around 44.2°F to average highs around 91.8°F. A year-round daily temperature averages 70.5°F. Average annual precipation is 63.4". With these temperatures and precipation, the majority of the county scores as an 9A 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 St. Charles Parish is 51,879 with 18,944 households. These households are spread across 14 unique municipalties (not all shown).
