Most populated ZIP codes in Illinois

The ZIP codes in Illinois with the most residents.

Rank	ZIP code	City	County	Population	Population
1	60629	Chicago, IL	Cook County	108,324	108,324
2	60618	Chicago, IL	Cook County	91,901	91,901
3	60632	Chicago, IL	Cook County	89,107	89,107
4	60647	Chicago, IL	Cook County	84,749	84,749
5	60639	Chicago, IL	Cook County	84,240	84,240
6	60804	Cicero, IL	Cook County	82,797	82,797
7	60623	Chicago, IL	Cook County	81,277	81,277
8	60608	Chicago, IL	Cook County	80,737	80,737
9	60625	Chicago, IL	Cook County	76,760	76,760
10	60617	Chicago, IL	Cook County	74,790	74,790
11	60634	Chicago, IL	Cook County	73,885	73,885
12	60085	Waukegan, IL	Lake County	72,341	72,341
13	60657	Chicago, IL	Cook County	71,904	71,904
14	60614	Chicago, IL	Cook County	70,693	70,693
15	60641	Chicago, IL	Cook County	68,894	68,894
16	60640	Chicago, IL	Cook County	65,445	65,445
17	60620	Chicago, IL	Cook County	64,871	64,871
18	60402	Berwyn, IL	Cook County	63,721	63,721
19	60651	Chicago, IL	Cook County	63,335	63,335
20	60073	Round Lake, IL	Lake County	62,868	62,868
21	60609	Chicago, IL	Cook County	62,028	62,028
22	60016	Des Plaines, IL	Cook County	60,898	60,898
23	60628	Chicago, IL	Cook County	60,431	60,431
24	60619	Chicago, IL	Cook County	59,503	59,503
25	60505	Aurora, IL	Kane County	57,199	57,199
26	60638	Chicago, IL	Cook County	57,074	57,074
27	60453	Oak Lawn, IL	Cook County	56,861	56,861
28	60056	Mount Prospect, IL	Cook County	55,818	55,818
29	60630	Chicago, IL	Cook County	55,486	55,486
30	60622	Chicago, IL	Cook County	54,609	54,609
31	60616	Chicago, IL	Cook County	54,308	54,308
32	61761	Normal, IL	McLean County	54,075	54,075
33	60637	Chicago, IL	Cook County	52,721	52,721
34	60148	Lombard, IL	DuPage County	52,596	52,596
35	60613	Chicago, IL	Cook County	52,244	52,244
36	60411	Chicago Heights, IL	Cook County	52,175	52,175
37	60440	Bolingbrook, IL	Will County	51,940	51,940
38	60004	Arlington Heights, IL	Cook County	51,835	51,835
39	60120	Elgin, IL	Cook County	51,225	51,225
40	60506	Aurora, IL	Kane County	50,038	50,038
41	60626	Chicago, IL	Cook County	49,662	49,662
42	60014	Crystal Lake, IL	McHenry County	48,590	48,590
43	60123	Elgin, IL	Kane County	48,379	48,379
44	60645	Chicago, IL	Cook County	48,208	48,208
45	60435	Joliet, IL	Will County	48,167	48,167
46	60649	Chicago, IL	Cook County	48,056	48,056
47	60586	Plainfield, IL	Will County	47,834	47,834
48	60126	Elmhurst, IL	DuPage County	47,516	47,516
49	60644	Chicago, IL	Cook County	47,210	47,210
50	60564	Naperville, IL	Will County	47,016	47,016

Source: American Community Survey 2020–2024 5-year estimates. Only ZIP codes with a delivery area are ranked. Methodology

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Most populated ZIP codes in Illinois

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