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Sussex County, NJ (shown in white) has 518.49 mi² of land area and 16.94 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 400.3' to a high of 1,699.5', with a weighted average of 800.4' above sea level.
Temperatures range from average lows around 18.3°F to average highs around 84.6°F. A year-round daily temperature averages 50.6°F. Average annual precipation is 50.8". 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 Sussex County is 147,127 with 57,090 households. These households are spread across 17 unique municipalties (not all shown).
