Environmental Justice Areas in Colorado — 2026

Out of 634 ZIP codes with data in Colorado, these are the highest-ranked areas for ej index. See also: National ZIP Codes with Highest Environmental Justice Concern | All Colorado Rankings

Statistic	Value
ZIP codes ranked	634
Highest value	94/100
Median value	25/100
State	Colorado

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	EJ Index	Safety Score
1	81422	Naturita	CO	94/100	66/100
2	81044	Hasty	CO	80/100	37/100
3	81424	Nucla	CO	80/100	60/100
4	81019	Colorado City	CO	75/100	57/100
5	81030	Cheraw	CO	75/100	33/100
6	81041	Granada	CO	75/100	50/100
7	81090	Walsh	CO	75/100	34/100
8	80010	Aurora	CO	74/100	51/100
9	80301	Boulder	CO	70/100	58/100
10	80303	Boulder	CO	70/100	53/100
11	80437	Evergreen	CO	70/100	52/100
12	80860	Victor	CO	68/100	56/100
13	81023	Beulah	CO	68/100	45/100
14	81047	Holly	CO	68/100	33/100
15	81055	La Veta	CO	68/100	53/100
16	81064	Pritchett	CO	68/100	49/100
17	81067	Rocky Ford	CO	68/100	45/100
18	81089	Walsenburg	CO	68/100	44/100
19	81039	Fowler	CO	67/100	62/100
20	80018	Aurora	CO	64/100	56/100
21	80465	Morrison	CO	64/100	56/100
22	80045	Aurora	CO	62/100	51/100
23	81049	Kim	CO	61/100	58/100
24	80302	Boulder	CO	60/100	53/100
25	81045	Haswell	CO	60/100	61/100
26	81050	La Junta	CO	60/100	35/100
27	81058	Manzanola	CO	60/100	33/100
28	81071	Sheridan Lake	CO	60/100	62/100
29	81137	Ignacio	CO	60/100	62/100
30	81144	Monte Vista	CO	60/100	73/100
31	81226	Florence	CO	60/100	66/100
32	81321	Cortez	CO	60/100	66/100
33	81413	Cedaredge	CO	60/100	59/100
34	81419	Hotchkiss	CO	60/100	57/100
35	81429	Paradox	CO	60/100	49/100
36	80744	Ovid	CO	59/100	61/100
37	81001	Pueblo	CO	58/100	65/100
38	81130	Creede	CO	58/100	81/100
39	81328	Mancos	CO	58/100	56/100
40	80480	Walden	CO	57/100	58/100
41	80030	Westminster	CO	56/100	64/100
42	80737	Julesburg	CO	56/100	61/100
43	80818	Genoa	CO	56/100	46/100
44	81073	Springfield	CO	55/100	65/100
45	80011	Aurora	CO	54/100	51/100
46	80012	Aurora	CO	54/100	51/100
47	80427	Central City	CO	54/100	61/100
48	80758	Wray	CO	54/100	58/100
49	81020	Aguilar	CO	54/100	61/100
50	81132	Del Norte	CO	54/100	80/100
51	81649	Red Cliff	CO	54/100	71/100
52	81120	Antonito	CO	53/100	72/100
53	80027	Louisville	CO	52/100	68/100
54	80461	Leadville	CO	52/100	56/100
55	80728	Fleming	CO	52/100	65/100
56	81143	Moffat	CO	51/100	72/100
57	81148	Romeo	CO	51/100	82/100
58	81210	Almont	CO	51/100	69/100
59	80026	Lafayette	CO	50/100	64/100
60	80110	Englewood	CO	50/100	69/100
61	80118	Larkspur	CO	50/100	60/100
62	80133	Palmer Lake	CO	50/100	66/100
63	80136	Strasburg	CO	50/100	63/100
64	80304	Boulder	CO	50/100	53/100
65	80305	Boulder	CO	50/100	58/100
66	80306	Boulder	CO	50/100	68/100
67	80307	Boulder	CO	50/100	64/100
68	80308	Boulder	CO	50/100	68/100
69	80309	Boulder	CO	50/100	64/100
70	80310	Boulder	CO	50/100	64/100
71	80314	Boulder	CO	50/100	64/100
72	80321	Boulder	CO	50/100	64/100
73	80322	Boulder	CO	50/100	64/100
74	80323	Boulder	CO	50/100	64/100
75	80328	Boulder	CO	50/100	64/100
76	80329	Boulder	CO	50/100	64/100
77	80436	Dumont	CO	50/100	68/100
78	80438	Empire	CO	50/100	65/100
79	80439	Evergreen	CO	50/100	42/100
80	80467	Oak Creek	CO	50/100	68/100
81	80473	Rand	CO	50/100	40/100
82	80477	Steamboat Springs	CO	50/100	72/100
83	80487	Steamboat Springs	CO	50/100	67/100
84	80488	Steamboat Springs	CO	50/100	69/100
85	80511	Estes Park	CO	50/100	59/100
86	80517	Estes Park	CO	50/100	54/100
87	80536	Livermore	CO	50/100	34/100
88	80540	Lyons	CO	50/100	35/100
89	80545	Red Feather Lakes	CO	50/100	61/100
90	80747	Peetz	CO	50/100	51/100
91	80801	Anton	CO	50/100	40/100
92	80816	Florissant	CO	50/100	66/100
93	80827	Lake George	CO	50/100	64/100
94	80861	Vona	CO	50/100	61/100
95	80863	Woodland Park	CO	50/100	59/100
96	80866	Woodland Park	CO	50/100	52/100
97	81006	Pueblo	CO	50/100	65/100
98	81043	Hartman	CO	50/100	40/100
99	81069	Rye	CO	50/100	40/100
100	81084	Two Buttes	CO	50/100	47/100

Methodology

The Environmental Justice Index combines environmental risk factors (water violations, lead, flooding) with socioeconomic vulnerability indicators. Higher values indicate communities facing disproportionate environmental burden. This metric highlights areas where infrastructure investment and policy attention are most needed.

Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-06-04.

Frequently Asked Questions

What is the Environmental Justice Index?

The EJ Index identifies communities that face disproportionate environmental hazards relative to their socioeconomic resilience. Areas with high violation counts, aging infrastructure, AND vulnerable populations score highest. These areas need the most infrastructure investment.

Why does environmental justice matter for homebuyers?

High EJ Index areas often have deferred infrastructure maintenance, slower violation resolution, and less access to clean water alternatives. For homebuyers, this means potential hidden costs for water filtration, flood insurance, and home remediation.