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 |
|---|---|---|---|---|---|---|
| 60629 | Chicago | Cook County | IL | 109,292 | $58,813 | $236,300 |
| 60618 | Chicago | Cook County | IL | 91,896 | $101,558 | $538,300 |
| 60632 | Chicago | Cook County | IL | 87,831 | $60,576 | $240,600 |
| 60647 | Chicago | Cook County | IL | 85,589 | $102,851 | $557,300 |
| 60639 | Chicago | Cook County | IL | 84,505 | $59,710 | $289,000 |
| 60804 | Cicero | Cook County | IL | 83,223 | $68,548 | $236,000 |
| 60608 | Chicago | Cook County | IL | 81,459 | $70,704 | $341,500 |
| 60617 | Chicago | Cook County | IL | 79,284 | $51,237 | $168,200 |
| 60625 | Chicago | Cook County | IL | 78,467 | $85,299 | $396,700 |
| 60623 | Chicago | Cook County | IL | 77,061 | $44,040 | $221,400 |
| 80013 | Aurora | Arapahoe County | CO | 74,732 | $97,167 | $453,700 |
| 60634 | Chicago | Cook County | IL | 74,418 | $84,997 | $333,900 |
| 47906 | West Lafayette | Tippecanoe County | IN | 74,283 | $51,736 | $280,900 |
| 60085 | Waukegan | Lake County | IL | 72,763 | $64,330 | $164,800 |
| 80015 | Centennial | Arapahoe County | CO | 72,155 | $121,640 | $558,900 |
| 60657 | Chicago | Cook County | IL | 71,268 | $109,025 | $534,500 |
| 60641 | Chicago | Cook County | IL | 67,400 | $81,649 | $373,200 |
| 60640 | Chicago | Cook County | IL | 66,884 | $71,030 | $363,300 |
| 60620 | Chicago | Cook County | IL | 66,511 | $48,805 | $187,900 |
| 14850 | South Hill | Tompkins County | NY | 66,495 | $69,689 | $334,800 |
| 80016 | Aurora | Arapahoe County | CO | 66,479 | $148,421 | $707,700 |
| 48197 | Ypsilanti | Washtenaw County | MI | 65,911 | $70,913 | $274,100 |
| 44256 | Medina | Medina County | OH | 64,606 | $100,345 | $292,000 |
| 60609 | Chicago | Cook County | IL | 64,268 | $54,142 | $251,600 |
| 60651 | Chicago | Cook County | IL | 63,892 | $52,963 | $262,700 |
| 60402 | Berwyn | Cook County | IL | 63,867 | $73,993 | $277,800 |
| 43055 | Newark | Licking County | OH | 62,697 | $61,807 | $185,300 |
| 43130 | Lancaster | Fairfield County | OH | 62,450 | $68,242 | $215,900 |
| 60016 | Des Plaines | Cook County | IL | 60,520 | $84,044 | $300,700 |
| 80219 | Denver | Denver County | CO | 60,095 | $67,325 | $426,200 |
| 60619 | Chicago | Cook County | IL | 59,892 | $43,403 | $213,000 |
| 80022 | Commerce City | Adams County | CO | 59,556 | $98,858 | $448,400 |
| 60628 | Chicago | Cook County | IL | 59,212 | $49,719 | $158,500 |
| 53215 | Milwaukee | Milwaukee County | WI | 58,375 | $49,207 | $148,400 |
| 60638 | Chicago | Cook County | IL | 58,250 | $89,191 | $283,500 |
| 46143 | Greenwood | Johnson County | IN | 58,238 | $89,401 | $295,400 |
| 80229 | Thornton | Adams County | CO | 57,274 | $83,450 | $382,900 |
| 60453 | Oak Lawn | Cook County | IL | 57,098 | $82,493 | $267,900 |
| 60056 | Mount Prospect | Cook County | IL | 55,989 | $104,168 | $376,300 |
| 84003 | American Fork | Utah County | UT | 55,259 | $120,262 | $580,600 |
| 48103 | Ann Arbor | Washtenaw County | MI | 54,635 | $115,513 | $455,100 |
| 43302 | Marion | Marion County | OH | 54,581 | $53,833 | $139,700 |
| 60630 | Chicago | Cook County | IL | 54,242 | $97,134 | $362,900 |
| 12180 | Troy | Rensselaer County | NY | 54,071 | $73,767 | $233,000 |
| 60622 | Chicago | Cook County | IL | 53,696 | $124,852 | $622,900 |
| 80020 | Broomfield | Broomfield County | CO | 53,589 | $114,039 | $570,100 |
| 61761 | Normal | McLean County | IL | 53,404 | $66,642 | $200,900 |
| 80011 | Aurora | Adams County | CO | 53,334 | $69,719 | $367,200 |
| 60637 | Chicago | Cook County | IL | 52,418 | $42,080 | $243,700 |
| 60411 | Chicago Heights | Cook County | IL | 52,395 | $56,627 | $148,200 |
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.