Zone
4A
Plant hardiness zone 4A
ZIP codes in USDA plant hardiness zone 4A. Population, income, and housing from US5 published metrics.
ZIP codes
765
Population
1,729,137
Median household income (avg.)
$73,945
Average home value
$199,124
What is USDA zone 4A?
Zone 4A is a USDA / PRISM plant hardiness band based on average annual extreme minimum winter temperature. Growers use it to compare winter-cold exposure across regions — it is a climate label, not a planting prescription.
US5 lists 765 indexable ZIP codes in this band, covering about 1,729,137 combined ZIP-area residents. The table below is sorted by population; use pagination to browse the full published set.
How to use this zone page
Scan communities inside zone 4A, then open any ZIP for full demographics, climate normals, schools, and nearby amenities. Zone membership comes from the USDA hardiness summary joined to published ZIP profiles.
ZIPs in zone 4A
Frequently asked questions
What does zone 4A mean?
Zone 4A is a USDA plant hardiness band based on average annual extreme minimum winter temperature. It helps compare winter-cold exposure across places; it is not a planting prescription.
Why is the table sorted by population?
Population ordering surfaces larger communities first. The zone total counts all published ZIPs in band 4A; page through the table to browse beyond the first page.
Is a hardiness zone the same as a climate normal?
Hardiness zones summarize winter extreme cold. ZIP pages on US5 also show precipitation, snow, and FEMA risk context separately.