Sullivan City, Texas — City Overview

Living in Sullivan City, summers are intense — Aug highs average 99.7°F, while winters stay mild, with Feb lows rarely below 54.2°F. At just 45 heating degree days per year, home heating costs are minimal. At just 22.6 inches of annual rainfall, this is a dry climate. Within 5 miles: 9 parks. For hospital care, the nearest facility is in a neighboring city. Median household income: $39,067. With a 29.4% poverty rate and 88.3% homeownership, the community reflects a stable residential mix. Air quality is Good — avg AQI 50 over the past week.

View Sullivan City city guide

Updated August 20, 2026.

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