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Onslow County, NC (shown in white) has 762.09 mi² of land area and 143.11 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 0' to a high of 114.8', with a weighted average of 34.4' above sea level.
Temperatures range from average lows around 32.9°F to average highs around 89.8°F. A year-round daily temperature averages 63°F. Average annual precipation is 57.8". With these temperatures and precipation, the majority of the county scores as an 8A 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 Onslow County is 217,218 with 74,522 households. These households are spread across 9 unique municipalties (not all shown).
