DeKalb County ZIP Codes

List of ZIP Codes in DeKalb County

The following table lists ZIP Codes associated with DeKalb County, Illinois, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.

S.N.	Zip Code	Latitude	Longitude	City	Population	Density
1	60111	42.00721	-88.83114	Clare	222	4.0
2	60112	41.92391	-88.68994	Cortland	4,611	487.1
3	60115	41.90109	-88.75469	Dekalb	42,461	202.3
4	60135	42.11265	-88.67867	Genoa	7,486	61.8
5	60145	42.09396	-88.77719	Kingston	2,206	25.2
6	60146	42.10091	-88.88019	Kirkland	2,241	15.6
7	60150	41.92106	-88.88982	Malta	2,000	13.8
8	60178	42.00625	-88.67205	Sycamore	21,709	124.8
9	60520	41.7826	-88.65808	Hinckley	2,966	25.4
10	60548	41.64811	-88.63471	Sandwich	11,233	104.8
11	60550	41.77708	-88.87777	Shabbona	1,074	10.0
12	60552	41.66144	-88.70343	Somonauk	4,589	66.6
13	60556	41.76507	-88.77373	Waterman	2,156	15.9

About DeKalb County ZIP Codes

DeKalb County in Illinois (IL) is served by approximately 13 ZIP Codes. These codes cover residential neighborhoods, business districts, and rural areas that fall under the county's jurisdiction.

Based on ZIP-level population estimates, the total population covered by these ZIP Codes is around 104,954 people. Population and density values vary from one ZIP Code to another, reflecting the mix of dense urban communities and lower-density suburban or rural zones.

Many of the most significant population centers in DeKalb County are located in cities such as Dekalb, Sycamore, Sandwich, Genoa, Cortland. These cities and towns help define the economic and demographic character of the county.

Most ZIP Codes in DeKalb County, Illinois follow the America/Chicago time zone.

DeKalb County ZIP Codes

List of ZIP Codes in DeKalb County

About DeKalb County ZIP Codes

Illinois Counties ZIP Codes

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