Counties / Illinois / DeKalb County

DeKalb County, IL

FIPS 17037 · population 100,703 · part of Chicago, IL

$299k
Zillow home value · 2026-06
The numbers

What this county costs and earns

Everything here joins on the county FIPS code, so each figure comes from the agency that publishes it with no name matching in between.

Zillow home value
$299k
▲ 5.6% year over year
Zillow ZHVI · direct
Median asking rent
$1,380
▲ 6.3% year over year
Zillow ZORI · direct
Gross yield
5.5%
annual rent ÷ price, before costs
derived: rent × 12 ÷ price ✓
HUD 2-bed standard
$1,373
market rent is 1.00x the standard
HUD Fair Market Rent · direct
Independent price check

Do two methods point the same way?

Zillow estimates a current home value. FHFA tracks repeat mortgage transactions. Their growth rates should be read side by side, not averaged.

Both annual signals move in the same direction
FHFA five-year cumulative+55.4%not annualized · through 2025
0%ZILLOW ZHVI2026-06+5.6%FHFA HPI2025+6.4%
Annual changes use different methods and may use different periods. The comparison checks direction and magnitude; it does not create a blended estimate. Zillow county ZHVI pulled 2026-07-26; FHFA annual county HPI pulled 2026-07-28.
Owner-reported value$244k
Surveyed gross rent$1,049
Rent burden 30%+57.2%
Median year built1978
Housing composition

Who occupies the stock—and what it is

ACS 2024 5-year
5.1%vacant
41,678estimated housing units
Occupied tenure38.6% renter
owner 61.4%renter 38.6%
Structure mix67.5% single-family
Single-family 67.5%20+ units 6.0%Mobile home 2.1%Other 24.4%
ACS estimates describe the standing housing stock and occupied tenure. They do not measure current listings, transaction prices or asking rents.

Survey source: Census ACS 5-year — county housing value, tenure and stock · ACS 2024 5-year · pulled 2026-07-30. These values describe different housing universes and are not combined into gross yield.

Annual average covered jobs36,502▲ 0.6% from the prior annual release
Covered establishments1,984annual average reporting locations
Average weekly wage$1,143▲ 4.5% from the prior annual release
Largest private supersectorTrade, transportation, and utilities30.7% of disclosed private covered jobs
Local labor base

Jobs, pay and private-sector concentration

2025
0%COVERED JOBS+0.6%WEEKLY WAGE+4.5%Trade, transportation, and utilities30.7%
Annual QCEW counts cover jobs located at reporting establishments. The industry share uses disclosed private covered employment; it is not a resident-employment measure or a forecast.

Workplace source: BLS QCEW — county employment and wages · annual county employment and wages 2025 vs 2024 · pulled 2026-07-31. QCEW counts covered jobs located in the county, not employed residents or the metro score’s CES/LAUS series.

County brief

What the local evidence says

01Decision frame

DeKalb’s decision tension is a stated 5.54% gross yield on a $299,129 Zillow county median home value and $1,380 monthly median asking rent, against carrying costs that can materially narrow that headline. The 2.45% effective property-tax rate and $5,974 median annual tax make this a market for buyers who can validate assessed value, tax treatment, and operating expenses property by property; investors relying on a simple county yield should be cautious.

02Housing economics

The rent is a measured market asking-rent series, so the supplied gross yield is usable only before insurance, taxes, maintenance, vacancy, and financing. HUD’s two-bedroom FMR is $1,373, but it is a payment standard rather than an asking-rent estimate and should not replace market rent. Zillow’s county observation shows 5.60% year-over-year price growth; the separately supplied FHFA annual observation shows a 6.42% gain in its repeat-transaction index. They point in the same direction, but use different methods and supplied periods, and neither is a closed-sale comp.

03Demand & competition

Realtor.com records 151 active MLS listings and a median 39 days on market: they measure visible supply and marketing time, not closed-sale pricing or buyer demand by themselves. QCEW’s annual county workplace series showed covered employment growth, while trade, transportation, and utilities was the largest disclosed private supersector; neither is resident employment, unemployment, or the whole economy. Out-movers exceeded in-movers by 92 tax-return households, although arriving movers had $1,032 higher average AGI. Investor purchase mortgages were 73 of 1,157 total purchases, or 6.31%; that is measurable competition but does not identify cash buyers or the homes targeted.

04Risk & next checks

Inland flood is the dominant hazard, and the modeled annual climate loss ratio is 0.11% of building value; it is not a claim history or a property-specific insurance quote. The county record lacks property-level flood-zone, elevation, drainage, insurance, condition, assessed-value, operating-expense, lease, vacancy, and closed-sale evidence. Those omissions prevent a net-yield, replacement-cost, and exit-price underwriting conclusion. Next checks are parcel tax bills and assessments, flood and insurance quotes, rent comps by unit type, and recent sale comps.

Cities & communities

Where people live within DeKalb County

Census-recognized incorporated places and CDPs that intersect this county. The list does not pretend to include every neighborhood or informal community.

Population scale

Largest Census places

ACS 2024 5-year
DeKalb city40.4KSycamore city18.6KSandwich city*7.2KGenoa city5.5KCortland town4.6KHinckley village2.3KMaple Park village*1.6KSomonauk village*1.6K
Bars use total place population, not a county-share estimate. An asterisk marks a place that crosses a county line.
Official directory

14 Census places

Population
  1. 01
    DeKalb cityIncorporated place
    40,443
  2. 02
    Sycamore cityIncorporated place
    18,559
  3. 03
    Sandwich cityIncorporated place · spans 2 counties
    7,219
  4. 04
    Genoa cityIncorporated place
    5,492
  5. 05
    Cortland townIncorporated place
    4,564
  6. 06
    Hinckley villageIncorporated place
    2,331
  7. 07
    Maple Park villageIncorporated place · spans 2 counties
    1,573
  8. 08
    Somonauk villageIncorporated place · spans 2 counties
    1,569
  9. 09
    Kirkland villageIncorporated place
    1,525
  10. 10
    Waterman villageIncorporated place
    1,448
  11. 11
    Kingston villageIncorporated place
    1,352
  12. 12
    Malta villageIncorporated place
    1,274
Show 2 more places
  1. 13
    Shabbona villageIncorporated place
    572
  2. 14
    Lee villageIncorporated place · spans 2 counties
    320

Population is the total place-wide ACS estimate, not an allocated county share. A place crossing a county line is labelled explicitly. Source: Census ACS 5-year — cities and communities · ACS 2024 5-year · pulled 2026-07-30.

Risk, demand and competition

The three things a price does not tell you

01
Risk & carrying costFEMA NRI + Census ACS
Dominant hazardinland flooding

0.109% of building value expected lost per year

Effective property tax2.45%

$5,974 median annual bill

02
DemandIRS SOI household flows
Net migration-92

3,061 in · 3,153 out

Arriving vs leaving income+$1,032

$53,972 arriving · $52,940 leaving

03
CompetitionHMDA financed purchases
Purchases by investors6.3%

73 of 1,157 mortgages

investorother financed
Current listing pressure

What sellers and visible supply are doing

Realtor.com® Economic Research · county inventory 2026-06 · pulled 2026-07-28
Active listings151▲ 6.7% year over year
Median days on market39▲ 11.3% year over year
Listings price-reduced10.8%seller-concession signal
Median listing pricen/a▲ 9.9% year over year

Listing price is an asking price, not a closed sale. Quality-flagged county rows are withheld instead of displayed.

Same metro

The other counties in Chicago, IL

A metro is an average of these. Which side of a county line a property sits on can change the tax bill, the hazard profile and the tenant pool.

CountyPopulationPriceRentYieldHazard
DeKalb County100,703$299k$1,3805.5%inland flooding
Cook County5,182,090$343k$2,3368.2%inland flooding
DuPage County930,024$449k$2,1405.7%inland flooding
Lake County714,223$401k$2,2516.7%inland flooding
Will County701,462$379k$2,3477.4%inland flooding
Kane County517,255$389k$2,1236.6%inland flooding
Lake County500,379$254k$1,4656.9%inland flooding
McHenry County312,591$372k$2,0286.6%inland flooding
Porter County174,818$336k$1,5285.5%inland flooding
Bear case

What can break the county thesis

  1. Property taxes, insurance, and operating costs could reduce the pre-expense yield below requirements.
  2. County-level rent and value measures may not match the target property’s unit type or neighborhood.
  3. Inland-flood exposure may vary sharply by parcel and insurance terms are not supplied.
Underwriting questions

Before pricing a property

Can gross yield be calculated from a published market-rent measure?

Yes. The record publishes median asking rent and supplies a gross yield before expenses.

How much investor mortgage competition is recorded?

Nonoccupants account for 6.31% of recorded purchase mortgages.

Which hazard should property due diligence prioritize?

Inland flood is the dominant disclosed hazard, with a county-level modeled climate loss ratio reported.