Zone
6A
Plant hardiness zone 6A
ZIP codes in USDA plant hardiness zone 6A. Population, income, and housing from US5 published metrics.
ZIP codes
4,855
Population
35,646,945
Median household income (avg.)
$75,369
Average home value
$228,792
What is USDA zone 6A?
Zone 6A 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 4,855 indexable ZIP codes in this band, covering about 35,646,945 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 6A, 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 6A
| ZIP | City | County | State | Population | Income | Home value |
|---|---|---|---|---|---|---|
| 53202 | Milwaukee | Milwaukee County | WI | 26,269 | $68,482 | $298,000 |
| 68901 | Hastings | Adams County | NE | 26,208 | $63,547 | $181,800 |
| 46312 | East Chicago | Lake County | IN | 26,158 | $41,071 | $92,400 |
| 49315 | Byron Center | Kent County | MI | 26,123 | $111,358 | $357,600 |
| 48371 | Oxford | Oakland County | MI | 26,120 | $108,983 | $352,500 |
| 01832 | Haverhill | Essex County | MA | 26,065 | $81,141 | $410,300 |
| 46806 | Fort Wayne | Allen County | IN | 26,060 | $44,601 | $78,000 |
| 49316 | Caledonia | Kent County | MI | 26,060 | $101,548 | $338,800 |
| 46236 | Lawrence | Marion County | IN | 26,049 | $117,530 | $281,800 |
| 48906 | Lansing | Clinton County | MI | 25,960 | $61,533 | $128,600 |
| 03053 | Londonderry | Rockingham County | NH | 25,930 | $132,241 | $464,100 |
| 12205 | Roessleville | Albany County | NY | 25,912 | $89,270 | $264,200 |
| 49006 | Kalamazoo | Kalamazoo County | MI | 25,888 | $45,617 | $198,000 |
| 60487 | Tinley Park | Cook County | IL | 25,881 | $137,426 | $339,600 |
| 84341 | North Logan | Cache County | UT | 25,791 | $64,045 | $403,800 |
| 48433 | Flushing | Genesee County | MI | 25,756 | $81,301 | $197,400 |
| 48708 | Bay City | Bay County | MI | 25,751 | $50,216 | $98,500 |
| 48340 | Pontiac | Oakland County | MI | 25,696 | $46,474 | $105,800 |
| 80304 | Boulder | Boulder County | CO | 25,634 | $121,534 | $1,166,100 |
| 46268 | Indianapolis city (balance) | Marion County | IN | 25,623 | $63,322 | $208,500 |
| 44483 | Warren | Trumbull County | OH | 25,602 | $47,629 | $100,600 |
| 68502 | Lincoln | Lancaster County | NE | 25,571 | $65,825 | $220,500 |
| 03051 | Hudson | Hillsborough County | NH | 25,476 | $124,973 | $407,100 |
| 68144 | Omaha | Douglas County | NE | 25,468 | $81,887 | $248,900 |
| 46517 | Elkhart | Elkhart County | IN | 25,438 | $53,263 | $168,500 |
| 48328 | — | Oakland County | MI | 25,409 | $69,788 | $210,800 |
| 47302 | Muncie | Delaware County | IN | 25,365 | $47,185 | $70,800 |
| 84032 | Independence | Wasatch County | UT | 25,328 | $101,365 | $647,900 |
| 80130 | Highlands Ranch | Douglas County | CO | 25,293 | $155,117 | $652,700 |
| 44460 | Salem | Columbiana County | OH | 25,289 | $59,882 | $153,200 |
| 80301 | Boulder | Boulder County | CO | 25,252 | $92,974 | $761,500 |
| 45356 | Piqua | Miami County | OH | 25,155 | $66,134 | $144,500 |
| 68111 | Omaha | Douglas County | NE | 25,118 | $41,010 | $101,800 |
| 48168 | Northville | Wayne County | MI | 25,039 | $173,671 | $546,300 |
| 60467 | Orland Park | Cook County | IL | 24,952 | $109,329 | $392,200 |
| 80303 | Boulder | Boulder County | CO | 24,934 | $77,344 | $941,600 |
| 48348 | — | Oakland County | MI | 24,892 | $131,586 | $421,300 |
| 60406 | Blue Island | Cook County | IL | 24,887 | $59,502 | $166,000 |
| 60827 | Riverdale | Cook County | IL | 24,887 | $37,648 | $123,800 |
| 44139 | Solon | Cuyahoga County | OH | 24,754 | $134,924 | $373,800 |
| 45805 | Lima | Allen County | OH | 24,746 | $65,954 | $153,700 |
| 01002 | Amherst Town | Hampshire County | MA | 24,726 | $69,411 | $449,000 |
| 49036 | Coldwater | Branch County | MI | 24,697 | $59,649 | $155,000 |
| 60053 | Morton Grove | Cook County | IL | 24,687 | $106,078 | $377,000 |
| 60448 | Mokena | Will County | IL | 24,630 | $126,483 | $369,700 |
| 46158 | Mooresville | Morgan County | IN | 24,622 | $79,877 | $241,500 |
| 53210 | Milwaukee | Milwaukee County | WI | 24,605 | $45,268 | $153,400 |
| 01886 | — | Middlesex County | MA | 24,584 | $181,523 | $689,400 |
| 80206 | Denver | Denver County | CO | 24,555 | $102,248 | $892,200 |
| 61571 | Washington | Tazewell County | IL | 24,544 | $87,852 | $200,300 |
Frequently asked questions
What does zone 6A mean?
Zone 6A 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 6A; 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.