ZIP codes
13
DeKalb County, IL Demographics & ZIP Codes
DeKalb County, Illinois demographics and median household income by ZIP code — 13 ZIP codes — population 104,954 — avg. income $87,845 — avg. home value $241,585. Compare income, housing, and ZIP-level data on US5.
Population
104,954
Median household income (avg.)
$87,845
117% of U.S. median
Average home value
$241,585
69% of U.S. median
Average rent
$876
75% of U.S. median
DeKalb County demographics
DeKalb County, Illinois covers 13 ZIP codes, with a combined ZIP-area population of about 104,954.
Median household income in DeKalb County
The average median household income across ZIP codes in DeKalb County, Illinois is about $87,845 — about 12% above the IL ZIP average ($78,143), and about 17% above the U.S. median ($75,149).
Among ZIPs with income data, 60552 (Somonauk) is near the top at about $122,375, while 60115 (DeKalb) is near the bottom at about $46,808.
Housing in DeKalb County
For housing in DeKalb County, Illinois, the average median home value is about $241,585 and the average median rent is about $876.
The most populous ZIP is 60115 (DeKalb) with about 42,461 residents. Use the table below to compare ZIP codes across the county.
ZIP codes in DeKalb County
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 60115 | DeKalb | DeKalb County | IL | 42,461 | $46,808 | $205,700 |
| 60178 | Sycamore | DeKalb County | IL | 21,709 | $88,314 | $262,700 |
| 60548 | Sandwich | DeKalb County | IL | 11,233 | $83,774 | $240,000 |
| 60135 | Genoa | DeKalb County | IL | 7,486 | $87,935 | $238,000 |
| 60112 | Cortland | DeKalb County | IL | 4,611 | $79,506 | $202,400 |
| 60552 | Somonauk | DeKalb County | IL | 4,589 | $122,375 | $245,300 |
| 60520 | Hinckley | DeKalb County | IL | 2,966 | $83,380 | $292,600 |
| 60146 | Kirkland | DeKalb County | IL | 2,241 | $84,615 | $209,400 |
| 60145 | Kingston | DeKalb County | IL | 2,206 | $88,750 | $251,800 |
| 60556 | Waterman | DeKalb County | IL | 2,156 | $94,625 | $242,900 |
| 60150 | Malta | DeKalb County | IL | 2,000 | $92,125 | $183,800 |
| 60550 | Shabbona | DeKalb County | IL | 1,074 | $79,420 | $192,500 |
| 60111 | — | DeKalb County | IL | 222 | $110,357 | $373,500 |
Frequently asked questions
What are the demographics of DeKalb County?
DeKalb County, Illinois has a combined ZIP-area population of about 104,954 across 13 ZIP codes. Browse the ZIP table for population, income, and housing by code.
What is the median household income in DeKalb County?
The average median household income across ZIP codes in DeKalb County, Illinois is about $87,845, about 12% above the state ZIP average ($78,143), and about 17% above the U.S. median ($75,149). Average median home value is about $241,585. Among ZIPs with data, 60552 (Somonauk) is near the top ($122,375) and 60115 (DeKalb) is near the bottom ($46,808).
How many ZIP codes are in DeKalb County?
DeKalb County, Illinois includes 13 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for DeKalb County?
This page lists ZIP codes in DeKalb County, Illinois with population, median household income, and home value. Select a ZIP for a full demographics profile.