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Union County, PA (shown in white) has 315.96 mi² of land area and 1.78 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 436.4' to a high of 2,129.3', with a weighted average of 941.3' above sea level.
Temperatures range from average lows around 18.1°F to average highs around 85.8°F. A year-round daily temperature averages 50.3°F. Average annual precipation is 45.5". 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 Union County is 42,969 with 14,647 households. These households are spread across 11 unique municipalties (not all shown).
