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Rockwall County, TX (shown in white) has 127.21 mi² of land area and 21.72 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 397' to a high of 639.8', with a weighted average of 525.9' above sea level.
Temperatures range from average lows around 34.8°F to average highs around 96.8°F. A year-round daily temperature averages 66.5°F. Average annual precipation is 43.1". 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 Rockwall County is 136,378 with 45,827 households. These households are spread across 6 unique municipalties (not all shown).
