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Warren County, OH (shown in white) has 401.42 mi² of land area and 6.06 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 600.4' to a high of 1,000.6', with a weighted average of 846.5' above sea level.
Temperatures range from average lows around 21.6°F to average highs around 86°F. A year-round daily temperature averages 53.9°F. Average annual precipation is 45.4". 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 Warren County is 256,368 with 94,338 households. These households are spread across 19 unique municipalties (not all shown).