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Delaware County, OK (shown in white) has 737.75 mi² of land area and 54.24 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 672.6' to a high of 1,236.9', with a weighted average of 954.3' above sea level.
Temperatures range from average lows around 22.7°F to average highs around 92.1°F. A year-round daily temperature averages 58.6°F. Average annual precipation is 51.3". 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 Delaware County is 42,198 with 17,434 households. These households are spread across 31 unique municipalties (not all shown).