DeKalb County Illinois - Government Site
Population: 100,139
Area: 634 square miles
County Seat: Sycamore
Area Code(s) in use: 815
Time Zone: CST
Adjacent counties:
Boone Kane Kendall La Salle Lee McHenry Ogle Winnebago
Airport
Aero Lake Estates Airport, Anderson Airport, Ballek Landing Area, Colonial Acres Airport, DeKalb Taylor Municipal Airport, Dewey Airport, Diedrich Airport, George Airport, Gord Airport, Harold Bunger Airport, Hendrickson Flying Service Airport, Hinckley Airport, Hoffman Airport, Hospital Heliport, Jack W Watson Airport, Kishwaukee Comm Health Heliport, Marx V Stott Airport, Ramme Airport, Richard C Watson Airport, Ruder Airport, Sandwich Airport, Uncle Chucks Airport, Vodden Airport, Wade Airport, Walter Airport, Warren Airport, Warren Landing Strip, Willadae Farms Airport, Willis Airport, Woodlake Landing Airport
Building
Adams Hall, Altgeld Hall, Anderson Hall, Boutell Memorial Concert Hall, Center for Black Studies, Chick Evans Field House, Cole Hall, Davis Hall, DeKalb County Administration Building, DeKalb County Courthouse, DeKalb County Public Safety Building, Dorland Building, Douglas Hall, DuSable Hall, East Heating Plant, Faraday Hall, Faraday Hall West, Founders Memorial Library, Gabel Hall, Gilbert Hall, Graham Hall, Grant Towers North, Grant Towers South, Haish Memorial Library, Holmes Student Center, Jack Olson Gallery, Kishwaukee Hall, Lincoln Hall, Lowden Hall, McMurry Hall, Montgomery Hall, Neptune Central Hall, Neptune East Hall, Neptune North Hall, Neptune West Hall, Pine Acres Rest Home, Reavis Hall, Sandwich City Hall, Sandwich Township Public Library, Stevens Building, Stevenson Towers North, Stevenson Towers South, Still Gymnasium, Still Hall, Swen Parson Hall, Sycamore Community Center, Sycamore Municipal Building, Sycamore Public Library, Tom Kennedy Recycling Center, Waterman City Hall, Watson Hall, West Heating Plant, Williston Hall, Wirtz Hall, Zulauf Hall
Canal
Union Ditch Number 1, Union Ditch Number 2
Cemetery
Afton Center Cemetery, Ault Road Cemetery, Barron Cemetery, Bethlehem Lutheran Cemetery, Brownell Cemetery, Charter Grove Cemetery, Charter Oak Cemetery, Cheney Cemetery, Colton Cemetery, Community Methodist Cemetery, DeKalb County Farm Cemetery, Dennis Cemetery, East Paw Paw Cemetery, Elmwood Cemetery, English Cemetery, Evergreen Cemetery, Fairview Park Cemetery, Freeland Cemetery, Genoa Cemetery, Greenview Cemetery, Greenwood Cemetery, Hick's Mill Cemetery, Hudson Cemetery, Immauel Lutheran Cemetery, Johnson Grove Cemetery, Johnson Grove Cemetery, Kingston Cemetery, Lanan Cemetery, Lee Calvary Cemetery, Little Red School House Cemetery, Malta Cemetery, Maple Cemetery, Mayfield Cemetery, Methodist-Elm Street Cemetery (historical), Miller Cemetery, Mound Rest Cemetery, Mount Carmel Sycamore Cemetery, Mount Pleasant Cemetery, Ney Cemetery, North Clinton Cemetery, North Kingston Cemetery, Oak Mound Cemetery, Oaklawn Cemetery, Oaklawn Cemetery, Oakridge Cemetery, Ohio Grove Cemetery, Old Stevens Cemetery, Pine Hill Cemetery, Pleasant Hill Cemetery, Pleasant Street Cemetery, Rose Hill Cemetery, Ross Grove Cemetery, Saint Catherines - Genoa Cemetery, Saint Marys Catholic DeKalb Cemetery, Saint Marys Cemetery, Saint Paul's Catholic Cemetery, South Grove Cemetery, South Paw Paw Cemetery, Suydam Cemetery, Sycamore - Main Street (historical), Sycamore-Somonauk Street (historical), Van Olindas Cemetery, Vanderburgh Cemetery, Victor Cemetery, Whitmore Cemetery
Church
Bethany Baptist Church, Bethel Assembly of God Church, Bethlehem Lutheran Church, Calvary Church, Evangelical Lutheran Church of Saint John, Faith Tabernacle Church, Faith United Methodist Church, Federated Church, First Baptist Church of DeKalb, First Baptist Church of Genoa, First Congregational United Church of Christ, First Lutheran Church, First Lutheran Church, Foursquare Gospel Church, Grace Community Fellowship Church, Immanuel Lutheran Church, Mayfield Church, Ney Church (historical), North Avenue Baptist Church, Northside Baptist Church, Northwest United Church, Open Bible Church, Pierce Community Church, Presbyterian Church of Waterman, Rollo Congregational Church, Saint Catherine Church, Saint Mary Catholic Church, Saint Mary Catholic Church, Saint Marys Catholic Church, Saint Pauls United Church of Christ, Saint Peters Episcopal Church, Salem Lutheran Church, Somonauk Church, Sycamore Baptist Church, The Israel of Gods Church, Trinity Lutheran Church, United Methodist Church of DeKalb, Waterman Bible Church
Civil
DeKalb County, Township of Afton, Township of Clinton, Township of Cortland, Township of DeKalb, Township of Franklin, Township of Genoa, Township of Kingston, Township of Malta, Township of Mayfield, Township of Milan, Township of Paw Paw, Township of Pierce, Township of Sandwich, Township of Shabbona, Township of Somonauk, Township of South Grove, Township of Squaw Grove, Township of Sycamore, Township of Victor
Dam
Buck Lake Dam, Shabbona Lake Dam
Forest
Chief Shabbona County Forest Preserve, Russell Forest Preserve
Hospital
Ben Gorden Community Mental Heath Center, Kishwaukee Community Hospital, Sandwich Community Hospital, Vencor Hospital
Lake
Parris Lake, Sononauk Lake (historical)
Locale
Camp Rotary McQueen, Chase (historical), Chief Shabbona Historical Site, DeKalb County Nursing Home, Edgebrook Country Club, Henrietta (historical), Indian Oaks Country Club, Ohio Grove Grange, Shabbona Grove Picnic Area, Sommonauk Point Picnic Area, Sycamore Golf Course, Three Fires Picnic Area
Mine
Fairdale Quarry, Sears Quarry
Park
Community Park, Hopkins Park, Huntley Park, Huskie Stadium, J Walter Becker Memorial Park, Katz Park, Knights Park, Liberty Park, Lions Park, Lions Park, MacQueen Forest Preserve, McCormack Park, Moose Range Park, P A Nehring Forest Preserve, Pioneer Park, Sandwich Memorial Park, Saunnak Forest Preserve, Shabbona Lake State Recreational Area, Shipman Park, Sycamore Historic District, Sycamore Swimming Pool, Wetzel Park, Wilkinson - Renwick Marsh Nature Preserve
Populated Place
Afton Center, Charter Grove, Clare, Colvin Park, Cortland, DeKalb, Edgebrook Mobile Home Park, Elva, Esmond, Evergreen Village Mobile Home Park, Fairdale, Five Points, Franks, Genoa, Hinckley, Kingston, Kirkland, Malta, McGirr, New Lebanon, Rollo, Sandwich, Shabbona, Shabbona Grove, Somonauk, Sycamore, Waterman, Wilkinson
Post Office
DeKalb Post Office, Dustin Post Office (historical), Pierceville Post Office (historical), Ross Grove Post Office (historical), Sandwich Post Office, South Grove Post Office (historical), Sycamore Post Office, Van Buren Post Office (historical)
Reservoir
Buck Lake, East Lagoon, Lorusso Lagoon, Shabbona Lake
School
Afton School (historical), Aldrich School (historical), Alms School (historical), Alsthon School (historical), Anderson School (historical), Arbuckle School (historical), Baker School (historical), Base Line School (historical), Bell School (historical), Bemis School (historical), Berg School (historical), Binder School (historical), Bovee School (historical), Brookside School (historical), Brown School (historical), Brush Point School (historical), Canada School (historical), Carlton School (historical), Center School (historical), Central School, Charter Grove School (historical), Charter Oak School (historical), Chesebro Elementary School, Clarke School (historical), Clinton Rosette Middle School, Coleman School (historical), Collidge School (historical), Colton School (historical), Coltonville School (historical), Cortland Elementary School, Coy School (historical), Crane School (historical), Cronktown School (historical), Davenport Elementary School, Deitrich School (historical), DeKalb High School, Derby Line School (historical), Dixon School (historical), Dreily School (historical), Dresser School (historical), Dummer Attendence Center, Dustin School (historical), Ellwood School, Evans School (historical), Excelsior School (historical), Farley School (historical), Fay School (historical), Five Points School (historical), Forest Eagle School (historical), Franklin School (historical), Freeland School (historical), Gallagher School (historical), Genoa Center School (historical), Genoa Middle School, Genoa-Kingston High School, Gibson School (historical), Glidden School, Gormley School (historical), Granart School (historical), Greenhow School (historical), Gunn School (historical), Haish School, Hays School (historical), Hiawatha Elementary School, Hiawatha High School, Hickey School (historical), Hickory Grove School (historical), Hinckley Elementary School, Hinckley-Big Rock High School, Hipple School (historical), Hix School (historical), Horan School (historical), Hueber School (historical), Huntley Middle School, Immanuel School (historical), Indian Creek High School, Indian Creek Middle School, Indian Valley Vocational Center, Jefferson School, Johnson School (historical), Johnson School (historical), Kingston Grade School, Kishwaukee College, Lacey School (historical), Latimer School (historical), Linch School (historical), Lincoln School, Littlejohn Elementary School, Love School (historical), Lovell School (historical), Lynn G Haskin Elementary School, Malta Grade School, Malta High School, McGirr School (historical), Milan School (historical), Mount Hunger School (historical), Nelson School (historical), Newman School, Ney School (historical), North Elementary School, North Grove School (historical), North Kingston School (historical), Northern Illinois University, Notre Dame School, Oak Glen School (historical), Ohio Grove School (historical), Olmstead School (historical), Open Hands Preschool, Parke School (historical), Person School (historical), Pleasant Hill School (historical), Pooler School (historical), Post School (historical), Powers School (historical), Prairie View Elementary School, Quilhot School (historical), Renwick School (historical), Renwick School (historical), Rose School (historical), Rundown School (historical), Saint Marys School, Saint Marys School, Sandwich High School, Sawyer School (historical), Schandelmeir School (historical), Shabbona Elementary School, Sheridan School (historical), Slade School (historical), Somonauk Grade School, Somonauk Junior-Senior High School, Somonauk School (historical), South Grove School (historical), South School, Southeast Elementary School, Stone School (historical), Strawberry Patch Christian Pre-School, Stuartville School (historical), Suydam School (historical), Swift School (historical), Sycamore High School, Sycamore Junior High School, Toad Hollow School (historical), Tyler Elementary School, Vandeburg School (historical), W W Woodbury Elementary School, Ward School (historical), Waterman Community Consolidated School, Waterman Elementary School, Waterman High School, Waterman Middle School, West Elementary School, Willowdale School (historical), Wiltberger School (historical), Wormley School (historical), Ziegler School (historical)
Stream
Battle Creek, Buck Branch, Bull Run, Deer Creek, East Branch Kilbuck Creek, East Branch South Branch Kishwaukee River, Kingsbury Creek, Middle Branch South Branch Kishwaukee River, North Branch South Branch Kishwaukee River, Owens Creek, South Branch South Branch Kishwaukee River, Trimble Run, West Branch Big Rock Creek
Tower
WDEK-FM (DeKalb), WDKB-FM (DeKalb), WLBK-AM (DeKalb), WSQR-AM (Sycamore)
Trail
Touch the Earth Trail
Woods
Charter Grove, Ohio Grove (historical), Prichards Grove, Ross Grove
| Race | Population |
| White |  90,849 |
| Black | 5,057 |
| Asian | 2,774 |
| Mixed | 1,043 |
| American Indian | 306 |
| Hawaiian & Pacific Islander | 110 |
| Additional population tables : | |
| State population table | |
| Illinois population by county | |