The basics
Total Population
165
Median Age
12.9
Climate & weather
Ranked against U.S. ZIP codes.
Summer Avg High (°F)
98.3
Winter Avg Low (°F)
41.1
Avg Temperature (°F)
71
Hot Days/yr (>90°F)
147.8
Freezing Days/yr (<32°F)
25.4
Annual Precipitation (in)
26.3
Annual Snowfall (in)
0.2
Flood & disaster risk
Ranked against U.S. ZIP codes.
FEMA Risk Score
93.6
Higher than 90%
The full report
Six pillars — each with percentile benchmarks, 16-year trends, and per-metric detail.
People
Work & Money
Housing
Amenities
Environment & Risk
ZIP Code 78021: frequently asked questions
- What is the weather like in ZIP Code 78021?
- ZIP Code 78021 averages 71°F year-round, summer highs near 98.3°F, winter lows around 41.1°F (NOAA 1991–2020 normals). It sees about 0.2 inches of snow a year.
- Is ZIP Code 78021 at risk of flooding or natural disasters?
- ZIP Code 78021's FEMA National Risk Index score is 93.6 (higher than 90% of U.S. ZIP codes). Its greatest modeled natural hazard is heat_wave.
Sources: U.S. Census ACS, FEMA National Risk Index, FHFA House Price Index, OpenStreetMap, EPA. Explore the map →