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Marion County, SC (shown in white) has 489.37 mi² of land area and 4.8 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 9.8' to a high of 150.9', with a weighted average of 54.3' above sea level.
Temperatures range from average lows around 33.2°F to average highs around 90.7°F. A year-round daily temperature averages 63.1°F. Average annual precipation is 51.3". With these temperatures and precipation, the majority of the county scores as an 8A 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 Marion County is 29,557 with 12,436 households. These households are spread across 8 unique municipalties (not all shown).