DeKalb County, IL Average Home Price (2026)
The average home price in DeKalb County, Illinois is about $311,000 (the 2026 median across 13 ZIP codes, at ~$202/sq ft) — 58% more expensive than the Illinois median and 8% more expensive than the typical U.S. home.
How DeKalb County compares
DeKalb County is about average for housing nationally: its typical home costs $311,000 against $197,000 for Illinois and $289,000 for the U.S. Within the county, ZIP-level values run from about $261,000 to $416,000.
| Area | Typical value | $ / sq ft |
|---|---|---|
| DeKalb County | $311,000 | $202 |
| Illinois | $197,000 | $134 |
| United States | $289,000 | $193 |
DeKalb County home prices by ZIP code
The 13 most valuable ZIP codes in DeKalb County (of 13 with data):
| ZIP code | Typical value | $ / sq ft | vs county |
|---|---|---|---|
| 60111 Clare | $416,000 | $469 | +34% |
| 60520 Hinckley | $331,000 | $202 | +6% |
| 60552 Somonauk | $326,000 | $201 | +5% |
| 60548 Sandwich | $323,000 | $203 | +4% |
| 60145 Kingston | $321,000 | $194 | +3% |
| 60178 Sycamore | $317,000 | $213 | +2% |
| 60135 Genoa | $311,000 | $220 | +0% |
| 60112 Cortland | $296,000 | $215 | -5% |
| 60556 Waterman | $296,000 | $212 | -5% |
| 60146 Kirkland | $278,000 | $127 | -11% |
| 60550 Shabbona | $278,000 | $134 | -11% |
| 60150 Malta | $277,000 | $159 | -11% |
| 60115 Dekalb | $261,000 | $185 | -16% |
Home value appreciation in DeKalb County
Home prices in DeKalb County have risen about 85% over the last 10 years (≈6.3% a year) and +42.9% over 20 years, according to the FHFA house price index through 2025. The most recent year came in at +6.4% — still rising. A home worth $311,000 today was worth roughly $168,290 ten years ago.
See where that trend takes a specific home with the home appreciation calculator — statewide, Illinois is +64.6% over the same 10 years. Past appreciation is a track record, not a forecast; local prices can fall.
Calculators for DeKalb County
Run the numbers for DeKalb County with the local rates already filled in — change any input to test your own situation.
Salary needed to buy a home in DeKalb County
To buy the typical $311,000 home in DeKalb County with 20% down, you need a household income of roughly $85,000 a year (about $1,970 a month for the mortgage, taxes, and insurance). With 10% down the bar rises to about $101,000, because the loan is bigger and mortgage insurance kicks in.
| Down payment | Cash down | Monthly payment | Income needed |
|---|---|---|---|
| 5% (+PMI) | $15,600 | $2,450/mo | $105,000/yr |
| 10% (+PMI) | $31,100 | $2,350/mo | $101,000/yr |
| 20% | $62,200 | $1,970/mo | $85,000/yr |
Assumes a 30-year fixed mortgage at 6.5%, property tax at 1.1% and insurance at 0.45% of value per year, PMI of 0.75% on loans with less than 20% down, and the standard 28% housing-to-income rule. Your rate, taxes, and HOA will move these — run your own numbers in the mortgage calculator.
What your budget buys in DeKalb County
At about $202 per square foot, here is roughly how much home different budgets get you in DeKalb County:
| Budget | Approx. size | What that looks like locally |
|---|---|---|
| $150k | 740 sq ft | below the local median — condos, smaller or older homes |
| $200k | 990 sq ft | below the local median — condos, smaller or older homes |
| $250k | 1240 sq ft | around the typical home here |
| $300k | 1490 sq ft | around the typical home here |
| $400k | 1980 sq ft | around the typical home here |
Wondering where that budget goes further? The relocation calculator ranks hundreds of U.S. cities by what the same money buys — it opens filtered to Illinois.
Estimate a specific home in DeKalb County
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DeKalb County home prices: frequently asked
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Browse all Illinois cities and counties, or look up price per square foot by ZIP code nationwide.
Directional estimates from public market data (Realtor.com & Zillow research; FHFA house price index; Census ZIP-to-county relationships), not appraisals.