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Irwin County, GA (shown in white) has 354.36 mi² of land area and 8.4 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 219.8' to a high of 429.8', with a weighted average of 311.4' above sea level.
Temperatures range from average lows around 37.3°F to average highs around 92°F. A year-round daily temperature averages 66°F. Average annual precipation is 49". 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 Irwin County is 9,684 with 3,626 households. These households are spread across single municipalty.
