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DeKalb County, Illinois

DeKalb County, Illinois · ZIP 60111, 60112, 60115

  • Census data · ACS 2019-2023
Browse the 32 townsFind my townSponsor a town here
  • 101,335 (2024 estimate)Population
  • 39,314Households
  • $69,022Median household income
  • $231,900Median home value
  • 32Towns with a page
  • 18ZIP codes

DeKalb County in numbersOfficial sources, refreshed yearly

Population, 2000 to 2020+12.9%
80k90k100k110k2000: 88,96920002010: 105,16020102020: 100,420202088,969100,420
Population of DeKalb County at each census
CensusPopulation
200088,969
2010105,160
2020100,420

As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.

Sources: Census 2000 Summary File 1: total population, county level, state 17, retrieved November 14, 2026; Census 2010 Summary File 1: total population, county level, state 17, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, county level, state 17, retrieved November 14, 2026.

Household income in DeKalb County
Under $50k36.9%
$50k to $100k28.4%
$100k to $150k17.7%
$150k to $200k9.6%
$200k and over7.2%

Median household income $69,022 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.

Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, county level, state 17, retrieved November 14, 2026.

Housing tenure in DeKalb County
Owner occupied
23,927 units
Renter occupied
15,387 units
Vacancy rate
5.3%

Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.

Source: American Community Survey 5-year data profile 2019–2023, county level, state 17, retrieved November 14, 2026.

Jobs by sector in DeKalb County2023
Health care and social assistance5,031
Retail trade4,613
Manufacturing4,287
Transportation and warehousing3,304
Accommodation and food services3,279
Construction1,751
Administrative and support and waste management and remediation services1,255
Other services (except public administration)1,181

29,129 employees in 1,975 establishments with payroll in 2023, all sectors; employers themselves are not named in the source. County Business Patterns counts are published with noise.

Source: County Business Patterns 2023: employment by sector, county level, state 17, retrieved November 14, 2026.

DeKalb County compared with its state
DeKalb County compared with its state, American Community Survey 2019-2023
MeasureDeKalb CountyIllinois
Population100,51212,692,653
Median household income$69,022$81,702
Median age32.638.9
Median home value$231,900$250,500
Bachelor’s degree or higher32.7%37.2%
Foreign-born residents6.4%14.4%
Owner-occupied homes60.9%66.8%
Mean commute to work26.7 minutes28.1 minutes

Source: American Community Survey 5-year data profile 2019–2023, county level, state 17, retrieved November 14, 2026.

Townships, towns and villages in DeKalb County32 with a page · sort by any column

Type
DeKalb TownshipTownship42,93335.1 sq mi
DeKalbCity40,49117.8 sq mi
SycamoreCity18,96810.1 sq mi
Sycamore TownshipTownship14,93334.3 sq mi
Cortland TownshipTownship11,48335.0 sq mi
Sandwich TownshipTownship7,59415.3 sq mi
SandwichCity7,2994.76 sq mi
Genoa TownshipTownship5,70636.1 sq mi
GenoaCity5,5142.60 sq mi
CortlandTown4,5923.62 sq mi
Kingston TownshipTownship3,48435.7 sq mi
Squaw Grove TownshipTownship2,69835.0 sq mi
Franklin TownshipTownship2,19735.9 sq mi
HinckleyVillage1,9760.86 sq mi
Somonauk TownshipTownship1,97419.3 sq mi
Clinton TownshipTownship1,91535.2 sq mi
SomonaukVillage1,7612.50 sq mi
KirklandVillage1,6211.26 sq mi
WatermanVillage1,5431.52 sq mi
Malta TownshipTownship1,52435.0 sq mi
Maple ParkVillage1,4822.29 sq mi
Shabbona TownshipTownship1,33334.6 sq mi
MaltaVillage1,1370.61 sq mi
KingstonVillage1,0950.99 sq mi
Afton TownshipTownship90435.1 sq mi
Mayfield TownshipTownship90434.9 sq mi
ShabbonaVillage8521.28 sq mi
Pierce TownshipTownship43235.0 sq mi
South Grove TownshipTownship41534.4 sq mi
Paw Paw TownshipTownship31037.6 sq mi
Milan TownshipTownship30935.2 sq mi
Victor TownshipTownship28732.8 sq mi

Populations: Census Population Estimates, Vintage 2024: subcounty totals, state 17 (2024). Land areas: Census Gazetteer 2025: counties. A dash means the figure is not in the cited file.

County officialsFrom public records

No county official is published yet. Names appear once a researcher drafts them from the county’s own site and a second person approves; office contacts only, never personal details.

Across DeKalb County

Jobs across DeKalb County

No job is posted in DeKalb County’s towns yet. Employers post from their business dashboard; public job banks are added once their terms are recorded.

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Events in the next 31 days

No upcoming event is listed in DeKalb County's towns yet. Members and businesses add events from any town page.

Latest postsRolled up from the towns

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Neighboring counties

Neighboring counties

Sources: Census county adjacency file 2024, retrieved November 14, 2026; Census Population Estimates, Vintage 2024: subcounty totals, state 17, retrieved November 14, 2026.