Iowa

Humboldt County

11 ZIP codes with environmental report cards. Letters show the range across each ZIP’s neighborhoods; open a ZIP for the details and sources.

ZIP	Graded D or F	Water	Air	Superfund	Industry
50519	6 of 12	C to F	A	A	B
50520	6 of 12	C to F	A	A	B
50529	6 of 12	D	A	A	B
50541	6 of 12	B to F	A	A	B
50545	6 of 12	D to F	A	A	B
50548	6 of 12	C to F	A	A	B to C
50558	7 of 12	A to F	A	A	B
50570	6 of 12	C to F	A	A	B
50577	6 of 12	D to F	A	A	B
50582	6 of 12	C to F	A	A	B
50591	6 of 12	D to F	A	A	B to C

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