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Spencer County, IN (shown in white) has 396.89 mi² of land area and 4.62 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 341.2' to a high of 649.6', with a weighted average of 434.1' above sea level.
Temperatures range from average lows around 24.9°F to average highs around 87.7°F. A year-round daily temperature averages 56.8°F. Average annual precipation is 54.1". With these temperatures and precipation, the majority of the county scores as an 6B 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 Spencer County is 20,099 with 7,997 households. These households are spread across 12 unique municipalties (not all shown).