Plant hardiness zone 6A

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

Zone

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
60148	Lombard	DuPage County	IL	52,358	$96,606	$328,600
60440	Bolingbrook	Will County	IL	52,074	$95,120	$262,100
48439	Grand Blanc	Genesee County	MI	52,071	$88,505	$250,800
60004	Arlington Heights	Cook County	IL	51,884	$124,962	$415,100
80012	Aurora	Arapahoe County	CO	51,389	$69,835	$398,300
46032	Carmel	Hamilton County	IN	51,181	$123,438	$464,200
60626	Chicago	Cook County	IL	50,027	$57,452	$269,000
84321	Logan	Cache County	UT	49,811	$66,262	$360,300
48823	East Lansing	Ingham County	MI	49,379	$50,837	$261,100
49201	Napoleon	Jackson County	MI	49,114	$71,714	$202,900
60435	Joliet	Will County	IL	48,521	$74,967	$217,200
60644	Chicago	Cook County	IL	48,317	$37,952	$238,300
80918	Colorado Springs	El Paso County	CO	48,291	$82,743	$414,400
60643	Chicago	Cook County	IL	47,802	$83,015	$233,900
60126	Elmhurst	DuPage County	IL	47,759	$143,333	$527,600
80233	Thornton	Adams County	CO	47,692	$85,132	$441,300
49009	Kalamazoo	Kalamazoo County	MI	47,606	$82,364	$330,300
46060	Noblesville	Hamilton County	IN	47,514	$91,141	$292,400
68516	Lincoln	Lancaster County	NE	47,389	$100,093	$331,600
84660	Spanish Fork	Utah County	UT	47,004	$98,398	$452,100
46037	Fishers	Hamilton County	IN	46,976	$137,969	$403,000
48843	Howell	Livingston County	MI	46,902	$91,620	$323,100
60645	Chicago	Cook County	IL	46,856	$77,126	$308,200
46074	Westfield	Hamilton County	IN	46,042	$123,580	$400,000
46226	Indianapolis city (balance)	Marion County	IN	45,640	$47,086	$148,900
48188	—	Wayne County	MI	45,522	$118,037	$356,700
80123	Columbine	Jefferson County	CO	45,364	$106,731	$581,800
47374	Richmond	Wayne County	IN	45,186	$52,566	$121,800
46350	La Porte	LaPorte County	IN	45,152	$75,311	$199,800
53209	Milwaukee	Milwaukee County	WI	44,963	$45,288	$150,200
12065	Clifton Knolls-Mill Creek	Saratoga County	NY	44,726	$115,681	$356,900
14075	North Boston	Erie County	NY	44,588	$82,083	$246,100
80126	Highlands Ranch	Douglas County	CO	44,482	$166,501	$713,500
49442	Muskegon	Muskegon County	MI	44,412	$50,069	$116,100
44691	Wooster	Wayne County	OH	44,390	$71,319	$216,800
48307	Rochester Hills	Oakland County	MI	44,267	$105,118	$329,400
48111	Belleville	Wayne County	MI	44,193	$74,125	$239,400
80239	Denver	Denver County	CO	44,077	$86,661	$394,500
46360	Michigan City	LaPorte County	IN	43,997	$59,641	$155,900
48104	Ann Arbor	Washtenaw County	MI	43,762	$63,341	$481,600
01453	Leominster	Worcester County	MA	43,635	$82,098	$345,900
60201	Evanston	Cook County	IL	43,555	$92,101	$577,800
66502	Manhattan	Riley County	KS	43,247	$52,363	$217,500
46038	Fishers	Hamilton County	IN	43,245	$105,092	$301,600
17701	Williamsport	Lycoming County	PA	43,169	$52,770	$176,200
53081	Sheboygan	Sheboygan County	WI	43,146	$62,401	$169,700
47909	Shadeland	Tippecanoe County	IN	42,971	$67,341	$203,600
46140	Greenfield	Hancock County	IN	42,927	$82,850	$227,200
13760	Endwell	Broome County	NY	42,880	$63,242	$150,700
60089	Buffalo Grove	Lake County	IL	42,781	$129,932	$393,000

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.