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Jay County, IN (shown in white) has 383.91 mi² of land area and 0.18 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 843.2' to a high of 1,099.1', with a weighted average of 913.6' above sea level.
Temperatures range from average lows around 17.6°F to average highs around 84°F. A year-round daily temperature averages 50.8°F. Average annual precipation is 42". With these temperatures and precipation, the majority of the county scores as an 6A 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 Jay County is 20,374 with 7,872 households. These households are spread across 6 unique municipalties (not all shown).