DeKalb County, Illinois ZIP codes
13 ZIP codes are in DeKalb County, plus 9 that cross in from neighboring counties. It's part of the Chicago-Naperville-Elgin, IL-IN metro area.
- ZIP codes
- 13
- Population in these ZIPs
- 105,547
- Avg. median income
- $74,000population-weighted
- Cities & towns
- 13
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in DeKalb County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 60111 | Clare | 257 | $84,583 | $415,900 |
| 60112 | Cortland | 4,621 | $72,831 | $296,300 |
| 60115 | Dekalb | 42,536 | $47,043 | $260,500 |
| 60135 | Genoa | 7,274 | $98,033 | $310,700 |
| 60145 | Kingston | 2,464 | $108,477 | $320,600 |
| 60146 | Kirkland | 2,369 | $88,032 | $278,500 |
| 60150 | Malta | 1,738 | $86,719 | $276,500 |
| 60178 | Sycamore | 22,224 | $92,913 | $317,000 |
| 60520 | Hinckley | 2,979 | $98,958 | $331,300 |
| 60548 | Sandwich | 11,721 | $82,957 | $322,900 |
| 60550 | Shabbona | 941 | $81,574 | $278,400 |
| 60552 | Somonauk | 4,285 | $113,411 | $325,600 |
| 60556 | Waterman | 2,138 | $100,186 | $296,100 |
ZIP codes partly in DeKalb County
These ZIP codes are mostly in a neighboring county but cover part of DeKalb County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 60129 | Esmond | Ogle County | 229 | $117,750 | $187,500 |
| 60140 | Hampshire | Kane County | 22,689 | $111,241 | $397,500 |
| 60151 | Maple Park | Kane County | 3,888 | $117,450 | $410,400 |
| 60152 | Marengo | McHenry County | 12,417 | $98,451 | $365,700 |
| 60511 | Big Rock | Kane County | 2,081 | $158,625 | $416,200 |
| 60518 | Earlville | LaSalle County | 3,289 | $69,980 | $246,400 |
| 60530 | Lee | Lee County | 992 | $96,250 | $264,600 |
| 60531 | Leland | LaSalle County | 1,885 | $79,808 | $279,400 |
| 61068 | Rochelle | Ogle County | 14,788 | $73,214 | $216,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in DeKalb County
Nearby counties
Frequently asked questions
How many ZIP codes are in DeKalb County, Illinois?
13 ZIP codes are mainly in DeKalb County, and 9 more ZIP codes from neighboring areas reach partly into it.
What cities are in DeKalb County?
ZIP codes in DeKalb County use the city names Clare, Cortland, Dekalb, Genoa, Hinckley, Kingston, Kirkland, Malta, Sandwich, Shabbona, Somonauk and Sycamore and others.
What metro area is DeKalb County in?
DeKalb County is part of the Chicago-Naperville-Elgin, IL-IN metropolitan statistical area.