DeKalb County is a

county A county () is a geographic region of a country used for administrative or other purposesL. Brookes (ed.) '' Chambers Dictionary''. Edinburgh: Chambers Harrap Publishers Ltd, 2005. in some nations. The term is derived from the Old French denoti ...

located in the U.S. state of

Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its ...

. As of the 2020 United States census, the population was 100,420. Its

county seat A county seat is an administrative center, seat of government, or capital city of a county or parish (administrative division), civil parish. The term is in use in five countries: Canada, China, Hungary, Romania, and the United States. An equiva ...

Sycamore Sycamore is a name which has been applied to several types of trees, but with somewhat similar leaf forms. The name derives from the Ancient Greek () meaning . Species of otherwise unrelated trees known as sycamore: * ''Acer pseudoplatanus'', a ...

. DeKalb County is part of the Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area.

History

DeKalb County was formed on March 4, 1837, out of

Kane County, Illinois Kane County is a County (United States), county in the U.S. state of Illinois. According to the 2020 United States census, 2020 census, it has a population of 516,522, making it the fifth-most populous county in Illinois. Its county seat is Gen ...

. The county was named for Johann de Kalb, a German (

Bavaria Bavaria, officially the Free State of Bavaria, is a States of Germany, state in the southeast of Germany. With an area of , it is the list of German states by area, largest German state by land area, comprising approximately 1/5 of the total l ...

n) hero of the

American Revolutionary War The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence, was the armed conflict that comprised the final eight years of the broader American Revolution, in which Am ...

. DeKalb County's area is approximately 632.7 square miles, and it is located 63 miles west of Chicago. There are 19 townships in the county; the county seat is Sycamore. Between 1834 and 1837, after the Potawatomi people had been pushed out, European Americans formed settlements in DeKalb County along streams and wooded areas due to fertile soil, wild game, and food and water opportunities. Primary growth stemmed from the introduction of the railroad, which brought easier methods of transportation and opportunities for industrial growth. Early industries based in DeKalb County included Sandwich Mfg. Co, Marsh Harvester Co,

barbed wire Roll of modern agricultural barbed wire Barbed wire, also known as barb wire or bob wire (in the Southern and Southwestern United States), is a type of steel fencing wire constructed with sharp edges or points arranged at intervals along the ...

, and Gurler Bros Pure Milk Co. The county is noted for agriculture. In 1852, the DeKalb Agricultural Society produced the county's first Agricultural Fair, in Sycamore. Eventually farmers, businessmen, bankers and newspapermen organized to become the DeKalb County Soil Improvement Association, which later was split into DeKalb County Farm Bureau and DeKalb Agricultural Association ( DEKALB AgResearch, Inc., Monsanto). DeKalb County is credited with being the birthplace of the Farm Bureau movement. DeKalb County is the 2nd largest hog producing county in Illinois and the 66th largest in the nation. Education has played an important role in the area: Northern Illinois University is located in DeKalb and Kishwaukee College is located in

Malta Malta, officially the Republic of Malta, is an island country in Southern Europe located in the Mediterranean Sea, between Sicily and North Africa. It consists of an archipelago south of Italy, east of Tunisia, and north of Libya. The two ...

. Except for 2020 (due to the

COVID-19 pandemic The COVID-19 pandemic (also known as the coronavirus pandemic and COVID pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an disease outbreak, outbreak of COVID-19 in Wuhan, China, in December ...

), a major fair has been held each year since 1887 at the Sandwich Fairgrounds in Sandwich. File:DeKalb County Illinois 1837.png, DeKalb County at the time of its creation in 1837

Pronunciation

Unlike similarly spelled locations, such as

DeKalb County, Georgia DeKalb County (, , ) is located in the north central portion of the U.S. state of Georgia (U.S. state), Georgia. As of the 2020 United States census, 2020 census, the population was 764,382, making it Georgia's fourth-most populous county. Its ...

, DeKalb denizens from Illinois pronounce the county name , with an L sound, as in German, after its namesake.

Geography

According to the

US Census Bureau The United States Census Bureau, officially the Bureau of the Census, is a principal agency of the U.S. federal statistical system, responsible for producing data about the American people and economy. The U.S. Census Bureau is part of the U ...

, the county has a total area of , of which is land and (0.5%) is water.

Climate and weather

In recent years, average temperatures in the county seat of Sycamore have ranged from a low of in January to a high of in July, although a record low of was recorded in January 1985 and a record high of was recorded in August 1988. Average monthly precipitation ranged from in February to in June.

Adjacent counties

* Boone County - north * McHenry County - northeast * Kane County - east * Kendall County - southeast * LaSalle County - south * Lee County - west * Ogle County - west * Winnebago County - northwest

Major highways

Interstate 88 * US 30

US Route 30 * US 34

US Route 34 * Illinois 23

Illinois Route 23 * Illinois 38

Illinois Route 38 * Illinois 64

Illinois Route 64 * Illinois 72

Illinois Route 72 * Illinois 110

Illinois Route 110

Transit

* DeKalb Public Transit

Demographics

As of the 2010 United States census, there were 105,160 people, 38,484 households, and 23,781 families residing in the county. The population density was . There were 41,079 housing units at an average density of . The racial makeup of the county was 85.1% white, 6.4% black or African American, 2.3% Asian, 0.3% American Indian, 3.9% from other races, and 2.0% from two or more races. Those of Hispanic or Latino origin made up 10.1% of the population. In terms of ancestry, 32.6% were German, 17.5% were Irish, 8.7% were English, 7.0% were Polish, 6.4% were Italian, 6.3% were Swedish, and 4.7% were Norwegian. Of the 38,484 households, 31.9% had children under the age of 18 living with them, 47.2% were married couples living together, 10.2% had a female householder with no husband present, 38.2% were non-families, and 25.8% of all households were made up of individuals. The average household size was 2.56 and the average family size was 3.11. The median age was 29.3 years. The median income for a household in the county was $54,002 and the median income for a family was $70,713. Males had a median income of $50,192 versus $35,246 for females. The per capita income for the county was $24,179. About 7.7% of families and 14.6% of the population were below the

poverty line The poverty threshold, poverty limit, poverty line, or breadline is the minimum level of income deemed adequate in a particular country. The poverty line is usually calculated by estimating the total cost of one year's worth of necessities for ...

, including 13.2% of those under age 18 and 4.5% of those age 65 or over.

Communities

Cities

* DeKalb *

Genoa Genoa ( ; ; ) is a city in and the capital of the Italian region of Liguria, and the sixth-largest city in Italy. As of 2025, 563,947 people live within the city's administrative limits. While its metropolitan city has 818,651 inhabitan ...

Sandwich A sandwich is a Dish (food), dish typically consisting variously of meat, cheese, sauces, and vegetables used as a filling between slices of bread, or placed atop a slice of bread; or, more generally, any dish in which bread serves as a ''co ...

(mostly) *

Town

* Cortland

Villages

* Hinckley * Kingston * Kirkland * Lee (part) *

* Maple Park (part) * Shabbona * Somonauk (mostly) * Waterman

Unincorporated communities

* Afton Center * Charter Grove * Clare * Colvin Park * East Paw Paw * Elva * Esmond * Fairdale * Five Points *

Franks file:Frankish arms.JPG, Aristocratic Frankish burial items from the Merovingian dynasty The Franks ( or ; ; ) were originally a group of Germanic peoples who lived near the Rhine river, Rhine-river military border of Germania Inferior, which wa ...

* McGirr * New Lebanon *

Rollo Rollo (, ''Rolloun''; ; ; – 933), also known with his epithet, Rollo "the Walker", was a Viking who, as Count of Rouen, became the first ruler of Normandy, a region in today's northern France. He was prominent among the Vikings who Siege o ...

* Shabbona Grove * Wilkinson

Townships

* Afton * Clinton * Cortland * DeKalb * Franklin *

* Kingston *

* Mayfield *

Milan Milan ( , , ; ) is a city in northern Italy, regional capital of Lombardy, the largest city in Italy by urban area and the List of cities in Italy, second-most-populous city proper in Italy after Rome. The city proper has a population of nea ...

* Paw Paw * Pierce *

* Shabbona * Somonauk * South Grove * Squaw Grove *

* Victor

Politics

As part of Northern Illinois, DeKalb County was a stronghold for the

Free Soil Party The Free Soil Party, also called the Free Democratic Party or the Free Democracy, was a political party in the United States from 1848 to 1854, when it merged into the Republican Party (United States), Republican Party. The party was focused o ...

in its early elections – being among nine Illinois counties to support

Martin Van Buren Martin Van Buren ( ; ; December 5, 1782 – July 24, 1862) was the eighth president of the United States, serving from 1837 to 1841. A primary founder of the Democratic Party (United States), Democratic Party, he served as Attorney General o ...

in 1848 – and became overwhelmingly Republican for the century following that party's formation. The only time it did not back the official GOP nominee between

1856 Events January–March * January 8 – Borax deposits are discovered in large quantities by John Veatch in California. * January 23 – The American sidewheel steamer SS ''Pacific'' leaves Liverpool (England) for a transatl ...

and 1988 was in

1912 This year is notable for Sinking of the Titanic, the sinking of the ''Titanic'', which occurred on April 15. In Albania, this leap year runs with only 353 days as the country achieved switching from the Julian to Gregorian Calendar by skippin ...

when the Republican Party was mortally divided and Progressive

Theodore Roosevelt Theodore Roosevelt Jr. (October 27, 1858 – January 6, 1919), also known as Teddy or T.R., was the 26th president of the United States, serving from 1901 to 1909. Roosevelt previously was involved in New York (state), New York politics, incl ...

won almost half the county's vote. During this time, it rejected Democrats even in statewide and national landslides. In

1936 Events January–February * January 20 – The Prince of Wales succeeds to the throne of the United Kingdom as King Edward VIII, following the death of his father, George V, at Sandringham House. * January 28 – Death and state funer ...

, Republican nominee

Alf Landon Alfred Mossman Landon (September 9, 1887October 12, 1987) was an American oilman and politician who served as the 26th governor of Kansas from 1933 to 1937. A member of the Republican Party, he was the party's nominee in the 1936 presidential ...

won DeKalb County by double digits while losing 46 of 48 states. Landon held

Franklin D. Roosevelt Franklin Delano Roosevelt (January 30, 1882April 12, 1945), also known as FDR, was the 32nd president of the United States, serving from 1933 until his death in 1945. He is the longest-serving U.S. president, and the only one to have served ...

to only 43 percent of DeKalb County's vote, the most he would garner in the county during his four runs for president. Even

Barry Goldwater Barry Morris Goldwater (January 2, 1909 – May 29, 1998) was an American politician and major general in the United States Air Force, Air Force Reserve who served as a United States senator from 1953 to 1965 and 1969 to 1987, and was the Re ...

– renowned for his antagonism towards the establishment – won by seven percent in

1964 Events January * January 1 – The Federation of Rhodesia and Nyasaland is dissolved. * January 5 – In the first meeting between leaders of the Roman Catholic and Orthodox churches since the fifteenth century, Pope Paul VI and Patria ...

, despite losing sixteen percent of the vote compared to

Richard Nixon Richard Milhous Nixon (January 9, 1913April 22, 1994) was the 37th president of the United States, serving from 1969 until Resignation of Richard Nixon, his resignation in 1974. A member of the Republican Party (United States), Republican ...

in 1960. In

1992 1992 was designated as International Space Year by the United Nations. Events January * January 1 – Boutros Boutros-Ghali of Egypt replaces Javier Pérez de Cuéllar of Peru as United Nations Secretary-General. * January 6 ** The Republ ...

, with the third-party entrance of

Ross Perot Henry Ross Perot ( ; June 27, 1930 – July 9, 2019) was an American businessman, politician, and philanthropist. He was the founder and chief executive officer of Electronic Data Systems and Perot Systems. He ran an Independent politician ...

siphoning votes from Republican

George H. W. Bush George Herbert Walker BushBefore the outcome of the 2000 United States presidential election, he was usually referred to simply as "George Bush" but became more commonly known as "George H. W. Bush", "Bush Senior," "Bush 41," and even "Bush th ...

Bill Clinton William Jefferson Clinton (né Blythe III; born August 19, 1946) is an American politician and lawyer who was the 42nd president of the United States from 1993 to 2001. A member of the Democratic Party (United States), Democratic Party, ...

became the first Democrat to carry the county in 140 years. Clinton would narrowly win the county again in

1996 1996 was designated as: * International Year for the Eradication of Poverty Events January * January 8 – A Zairean cargo plane crashes into a crowded market in the center of the capital city of the Democratic Republic of the Congo ...

, carrying the county by 335 votes over Republican nominee

Bob Dole Robert Joseph Dole (July 22, 1923 – December 5, 2021) was an American politician and attorney who represented Kansas in the United States Senate from 1969 to 1996. He was the Party leaders of the United States Senate, Republican Leader of th ...

Education

Tertiary

Northern Illinois University is in the county.

K-12

References

*
US Census Bureau 2007 TIGER/Line Shapefiles
*
US National Atlas

External links

*
History pages for DeKalb County towns and cities

DeKalb County Youth Service Bureau

* ttp://www.DeKalbCountyOnline.com DeKalb County Online Newspaper {{DEFAULTSORT:Dekalb County, Illinois 1837 establishments in Illinois Chicago metropolitan area Illinois counties Populated places established in 1837

History

Pronunciation

Geography

Climate and weather

Adjacent counties

Major highways

Transit

Demographics

Communities

Cities

Town

Villages

Unincorporated communities

Townships

Politics

Education

Tertiary

K-12

See also

References

References

Further reading

External links