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Johnson County, AR (shown in white) has 660.99 mi² of land area and 22.98 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 298.6' to a high of 2,299.9', with a weighted average of 1,015' above sea level.
Temperatures range from average lows around 27.8°F to average highs around 91.2°F. A year-round daily temperature averages 60.1°F. Average annual precipation is 55.9". With these temperatures and precipation, the majority of the county scores as an 7A 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 Johnson County is 26,185 with 10,074 households. These households are spread across 8 unique municipalties (not all shown).
