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Plant hardiness zone 6A

ZIP codes in USDA plant hardiness zone 6A. Population, income, and housing from US5 published metrics.

Zone
6A
ZIP codes
4,855
Population
35,646,945
Median household income (avg.)
$75,369
Average home value
$228,792
All hardiness zones Opportunity zones ZIP lists ZIP rankings

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
80204 Denver Denver County CO 35,518 $79,265 $579,900
80003 Arvada Jefferson County CO 35,381 $82,754 $486,600
46077 Zionsville Boone County IN 35,378 $160,868 $534,600
80231 Denver Denver County CO 35,297 $73,961 $489,900
03104 Manchester Hillsborough County NH 35,274 $84,513 $364,200
53402 Caledonia Racine County WI 35,272 $74,125 $224,200
60409 Calumet City Cook County IL 35,253 $53,991 $133,600
13027 Radisson Onondaga County NY 35,233 $91,369 $226,500
49548 Wyoming Kent County MI 35,119 $62,218 $149,500
46260 Indianapolis city (balance) Marion County IN 35,102 $70,642 $271,600
12401 Kingston Ulster County NY 35,058 $67,426 $285,700
49506 Grand Rapids Kent County MI 35,025 $112,287 $338,600
81007 Pueblo West Pueblo County CO 34,992 $95,419 $371,600
80227 Lakewood Jefferson County CO 34,946 $88,796 $535,000
80260 Thornton Adams County CO 34,861 $62,929 $188,200
60612 Chicago Cook County IL 34,699 $60,457 $331,600
80228 Lakewood Jefferson County CO 34,677 $110,013 $607,300
03038 Derry Rockingham County NH 34,622 $104,306 $381,700
80004 Arvada Jefferson County CO 34,580 $99,576 $590,600
53207 Milwaukee Milwaukee County WI 34,536 $79,576 $228,500
53211 Milwaukee Milwaukee County WI 34,427 $76,206 $413,500
80911 Security-Widefield El Paso County CO 34,296 $78,105 $348,900
68116 Omaha Douglas County NE 34,209 $119,182 $319,900
68046 Papillion Sarpy County NE 34,110 $113,708 $331,800
80027 Louisville Boulder County CO 33,998 $153,165 $822,700
80205 Denver Denver County CO 33,856 $98,770 $627,600
48642 Midland Midland County MI 33,770 $77,690 $194,100
03102 Manchester Hillsborough County NH 33,755 $69,927 $309,400
68022 Omaha Douglas County NE 33,702 $139,713 $452,800
46526 Goshen Elkhart County IN 33,527 $65,864 $192,900
48423 Davison Genesee County MI 33,508 $64,096 $209,400
49546 Forest Hills Kent County MI 33,429 $97,386 $389,100
46239 Indianapolis city (balance) Marion County IN 33,403 $92,160 $253,000
80241 Thornton Adams County CO 33,393 $107,553 $502,300
48322 Farmington Hills Oakland County MI 33,197 $118,001 $374,000
47802 Terre Haute Vigo County IN 33,192 $58,880 $165,800
60517 Woodridge DuPage County IL 33,173 $96,357 $342,000
03820 Dover Strafford County NH 33,150 $92,793 $397,900
44512 Youngstown Mahoning County OH 33,018 $62,311 $158,800
12309 Niskayuna Schenectady County NY 32,996 $119,830 $301,100
60076 Skokie Cook County IL 32,973 $103,870 $381,000
44601 Alliance Stark County OH 32,823 $61,887 $142,600
60202 Evanston Cook County IL 32,818 $101,087 $381,300
60423 Frankfort Will County IL 32,813 $137,651 $376,500
48910 Lansing Ingham County MI 32,801 $52,154 $117,600
45503 Springfield Clark County OH 32,673 $54,561 $153,100
48640 Midland Midland County MI 32,630 $81,630 $191,000
60302 Oak Park Cook County IL 32,589 $97,414 $450,700
80026 Lafayette Boulder County CO 32,549 $115,031 $664,000
46342 Hobart Lake County IN 32,525 $72,163 $193,400

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.