DeKalb County
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- Population
- 100,703
- Area
- 631.34 sq mi (1,635.16 km²), 3.31 sq mi water
- Median age
- 32.7
- Households
- 39,550
- Persons per household
- 2.4
- Median household income
- $70,724
- Median house value
- $243,600
Demographics: 2020–2024 ACS
Overnight
62°F
Partly Cloudy
Saturday
84°F
Mostly Sunny7% precip
Saturday Night
57°F
Partly Cloudy4% precip
Sunday
72°F
Partly Sunny then Chance Rain Showers40% precip
Cities & Towns in DeKalb County
Afton TownshipClinton TownshipCortlandCortland TownshipDeKalbDeKalb TownshipFranklin TownshipGenoaGenoa TownshipHinckleyKingston TownshipKingston VillageKirklandLeeMaltaMalta TownshipMaple ParkMayfield TownshipMilan TownshipPaw Paw TownshipPierce TownshipSandwichSandwich TownshipShabbonaShabbona TownshipSomonaukSomonauk TownshipSouth Grove TownshipSquaw Grove TownshipSycamoreSycamore TownshipVictor TownshipWaterman