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Worst Air Quality ZIP Codes in Delaware

Top 50 worst air quality zip codes in america in Delaware. ZIP-level data from EPA Air Quality Index.

Top 50

#	ZIP Code	City / Suburb	Median AQI
1	19701	Bear	43
2	19702	Glasgow	43
3	19703	Claymont	43
4	19706	Delaware City	43
5	19707	Hockessin	43
6	19709	Middletown	43
7	19710	—	43
8	19711	Newark	43
9	19713	Brookside	43
10	19716	Newark	43
11	19717	Newark	43
12	19720	New Castle	43
13	19730	Odessa	43
14	19731	Port Penn	43
15	19732	—	43
16	19733	St. Georges	43
17	19734	Townsend	43
18	19735	—	43
19	19736	Hockessin	43
20	19801	Wilmington	43
21	19802	Wilmington	43
22	19803	Wilmington	43
23	19804	Newport	43
24	19805	Wilmington	43
25	19806	Wilmington	43
26	19807	Greenville	43
27	19808	Pike Creek	43
28	19809	Wilmington	43
29	19810	Arden	43
30	19901	Dover	41
31	19902	Dover	41
32	19904	Dover	41
33	19934	Camden	41
34	19936	Cheswold	41
35	19938	Clayton	41
36	19943	Riverview	41
37	19946	Frederica	41
38	19952	Harrington	41
39	19953	Hartly	41
40	19954	Houston	41
41	19955	Kenton	41
42	19962	Rising Sun-Lebanon	41
43	19964	—	41
44	19977	Smyrna	41
45	19979	Viola	41
46	19980	Woodside	41
47	19930	Bethany Beach	40
48	19931	Bethel	40
49	19933	Bridgeville	40
50	19939	Dagsboro	40

Methodology

This ranking is based on EPA Air Quality Index data, scoped to Delaware ZIP codes. Up to 50 ZIP codes are listed, ordered by median aqi. Data is refreshed periodically. See our methodology page for full details on data sources and update frequency.

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