Property tax in DeKalb County, Illinois
A county-level estimate for buyers and owners, with the data vintage and uncertainty shown instead of hidden.
Estimated annual property tax
For a $243,600 home (the county median):
$5,974/yr (estimated range $5,078-$6,870)
Effective rate: 2.45% - Accuracy: Tier 1 - Medium confidence
Homeowners insurance budget
$3,029/yr (wide budgeting range $1,817-$4,240)
Low confidence This is a historical budgeting benchmark, not a current carrier quote. The baseline is the 2022 NAIC HO-3 state average of $1,343/yr, adjusted for home value and FEMA county risk.
- FEMA risk percentile
- 80.82 (Relatively Low)
- NAIC baseline as of
- 2022-12-31
- FEMA version
- 1.20, 2025-12-01
Sources: NAIC Homeowners Report; FEMA National Risk Index. TrueCarry's analysis is not endorsed by FEMA.
Insurance disclaimer: Estimate for budgeting only — not an insurance quote and not a binding price. Verify with the county assessor and a licensed professional before making financial decisions.
Illustrative monthly PITI
$1,982/mo under the assumptions below
| Principal & interest | $1,232 |
|---|---|
| Property tax | $498 |
| Homeowners insurance | $252 |
| PMI | $0 |
| Estimated total | $1,982 |
Assumes 20% down, a 6.5% fixed interest rate, and a 30-year term. The rate is an assumption, not today's market rate or a loan offer.
How local carrying costs affect affordability
For an illustrative household earning $100,000/yr, with $500/mo in other debts and a $50,000 down payment, the modeled maximum price is:
$271,992 under this county's tax and insurance burden
Compared with the Illinois launch-county average baseline of $294,447, this is $22,455 lower.
Medium confidence Uses 28% / 36% front/back DTI, a 6.5% assumed rate, a 30-year term, and estimated tax and insurance that scale with price. It is not a loan pre-approval.
Estimate for budgeting only — not a loan pre-approval, lending decision, or financial advice. Verify with the county assessor and a licensed professional before making financial decisions.
How DeKalb County compares within Illinois
Tax-rate rank: 2 of 102 published Illinois counties when sorted from highest to lowest effective rate.
The county's 2.45% effective rate is 0.65 percentage points above the Illinois published-county average of 1.8%; the state median is 1.8%.
The $243,600 county median home value ranks 10 of 102 from highest to lowest and is $108,950 above the Illinois county median of $134,650.
FEMA places DeKalb County at risk percentile 80.82 (Relatively Low), which is used only as a bounded relative adjustment to the historical state insurance baseline.
Counties with similar effective rates
- Stephenson County: 2.4% effective rate; $134,900 median home value
- Winnebago County: 2.39% effective rate; $164,500 median home value
- Kendall County: 2.37% effective rate; $322,400 median home value
Calculate your price and monthly cost
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Source, method & confidence
Confidence: Medium. County-level effective rate derived from ACS medians; not a jurisdiction-specific mill rate.
Data as of 2024-12-31 (ACS period ending); tax year 2024; data version 2024.1.
Sources: U.S. Census Bureau, American Community Survey (ACS) 5-year, table B25103; U.S. Census Bureau, American Community Survey (ACS) 5-year, table B25077.
Assumptions and exclusions
- Effective property-tax rate of 2.45% applied to the full home value (ACS median tax paid ÷ median home value).
- Uncertainty band of ±15% reflects intra-county variation not captured by a single county rate.
- Excludes special districts, local levies, and any exemptions (estimated separately at higher tiers).
Common questions about DeKalb County carrying costs
- What is the property tax rate in DeKalb County, Illinois?
- The estimated effective property tax rate in DeKalb County is 2.45%. On the county median home value of $243,600, that is about $5,974 per year (estimated range $5,078 to $6,870), based on U.S. Census ACS 2024 data.
- How much is property tax on a $243,600 home in DeKalb County?
- About $5,974 per year at a 2.45% effective rate. Actual bills vary with assessment, exemptions, and local levies, so treat this as a budgeting estimate rather than a tax bill.
- How much is homeowners insurance in DeKalb County, Illinois?
- A budgeting estimate of $3,029 per year (wide range $1,817 to $4,240), based on the 2022 NAIC HO-3 state average adjusted for FEMA county risk. It is a historical benchmark, not a carrier quote.
- What is the estimated monthly PITI payment for a home in DeKalb County?
- About $1,982 per month for a $243,600 home, assuming 20% down, a 6.5% interest rate, and a 30-year term. PITI covers principal, interest, property tax, and homeowners insurance.