Official Census inventory · IL
Illinois government directory.
6,972 public-entity records, with Census classifications, functions, contact fields, population or enrollment where published, and explicit functioning or dormant status.
6,963functioning
2,821general-purpose governments
3,219special district governments
890independent school districts
0dependent school systems
42public pension systems
Census public-use file
6,972 records
Special district governmentFunctioning
Old Du Quoin Public Water District
WATER SUPPLY UTILITY
- County area
- Perry
- Contact
- PO BOX 466 · DU QUOIN, IL · 62832-0466
- Census ID
- 146583
Special district governmentFunctioning
Old River Drainage District
DRAINAGE
- County area
- Cass
- Contact
- 19 E DEER PATH DR · BEARDSTOWN, IL · 62618-9593
- Census ID
- 145460
Special district governmentFunctioning
Old Salem Chautauqua Sanitation District
SEWERAGE
- County area
- Menard
- Contact
- 18644 3RD ST · PETERSBURG, IL · 62675-6261
- Census ID
- 190063
Special district governmentFunctioning
Old Town Sanitary District
SEWERAGE
- County area
- Cook
- Contact
- 1845 E RAND RD, STE 111 · ARLINGTON HEIGHTS, IL · 60004-4359
- Census ID
- 204339
Special district governmentFunctioning
Olive Fire Protection District
LOCAL FIRE PROTECTION
- County area
- Madison
- Contact
- PO BOX 359 · LIVINGSTON, IL · 62058-0359
- Census ID
- 206405
Special district governmentFunctioning
Olivet Public Water Service District
WATER SUPPLY UTILITY
- County area
- Vermilion
- Contact
- 5022 OLIVET RD · GEORGETOWN, IL · 61846-6151
- Census ID
- 146822
Special district governmentFunctioning
Olney Township Fire Protection District
LOCAL FIRE PROTECTION
- County area
- Richland
- Contact
- 501 N WALNUT ST · OLNEY, IL · 62450
- Census ID
- 206432
Special district governmentFunctioning
Olney-Noble Airport Authority
AIR TRANSPORTATION
- County area
- Richland
- Contact
- PO BOX 656 · OLNEY, IL · 62450-0656
- Census ID
- 201698
Special district governmentFunctioning
Olympia Fields Park District
PARKS AND RECREATION
- County area
- Cook
- Contact
- 20712 WESTERN AVE · OLYMPIA FIELDS, IL · 60461-1948
- Census ID
- 192500
Special district governmentFunctioning
Olympia Gardens Fire Protection District
LOCAL FIRE PROTECTION
- County area
- Cook
- Contact
- 20520 HUTCHINSON AVE · CHICAGO HEIGHTS, IL · 60411-1946
- Census ID
- 145648
Special district governmentFunctioning
Onarga #6 Drainage District
DRAINAGE
- County area
- Iroquois
- Contact
- 1001 E GRANT ST · WATSEKA, IL · 60970-1832
- Census ID
- 243090
Special district governmentFunctioning
Onarga Douglas Danforth Drainage District
DRAINAGE
- County area
- Iroquois
- Contact
- 1001 E GRANT ST · WATSEKA, IL · 60970-1832
- Census ID
- 146062
Special district governmentFunctioning
Onarga Drainage District 2
DRAINAGE
- County area
- Iroquois
- Contact
- 1001 E GRANT ST · WATSEKA, IL · 60970-1832
- Census ID
- 125625
Special district governmentFunctioning
Onarga Drainage District 3
DRAINAGE
- County area
- Iroquois
- Contact
- 1001 E GRANT ST · WATSEKA, IL · 60970-1832
- Census ID
- 146063
Special district governmentFunctioning
Onarga Drainage District 4
DRAINAGE
- County area
- Iroquois
- Contact
- 1001 E GRANT ST · WATSEKA, IL · 60970-1832
- Census ID
- 125615
Special district governmentFunctioning
Onarga Drainage District 5
DRAINAGE
- County area
- Iroquois
- Contact
- 1001 E GRANT ST · WATSEKA, IL · 60970-1832
- Census ID
- 146082
Special district governmentFunctioning
Onarga Fire Protection District
LOCAL FIRE PROTECTION
- County area
- Iroquois
- Contact
- PO BOX 136 · ONARGA, IL · 60955-0136
- Census ID
- 146064
Special district governmentFunctioning
Onarga Public Library District
LIBRARIES
- County area
- Iroquois
- Contact
- 209 W SEMINARY AVE · ONARGA, IL · 60955-1131
- Census ID
- 103338
Special district governmentFunctioning
Onarga-Ridgeland Drainage District 1
DRAINAGE
- County area
- Iroquois
- Contact
- 1001 E GRANT ST · WATSEKA, IL · 60970-1832
- Census ID
- 103335
Special district governmentFunctioning
Onarga-Ridgeland Drainage District 2
DRAINAGE
- County area
- Iroquois
- Contact
- 101 S BLUE SPRUCE LN · ONARGA, IL · 60955-1303
- Census ID
- 125624
Special district governmentFunctioning
Oneco Cemetery District
CEMETERIES
- County area
- Stephenson
- Contact
- 10 RIDGE CT · ORANGEVILLE, IL · 61060
- Census ID
- 195845
Special district governmentFunctioning
Oneida Sanitary District
SEWERAGE
- County area
- Knox
- Contact
- 107 E PINE ST · ONEIDA, IL · 61467-5099
- Census ID
- 146195
Special district governmentFunctioning
Oneida-Wataga Fire Protection District
LOCAL FIRE PROTECTION
- County area
- Knox
- Contact
- PO BOX 279 · ALTONA, IL · 61414-0279
- Census ID
- 146188
Special district governmentFunctioning
Ophir Drainage District 1
DRAINAGE
- County area
- Lasalle
- Contact
- 1471 N 42ND RD · EARLVILLE, IL · 60518-6092
- Census ID
- 146234
Special district governmentFunctioning
Ophir-Meriden Union Drainage District 10
DRAINAGE
- County area
- Lasalle
- Contact
- 760 E ETNA RD · OTTAWA, IL · 61350-1014
- Census ID
- 146248
Special district governmentFunctioning
Oquawka Fire Protection District
LOCAL FIRE PROTECTION
- County area
- Henderson
- Contact
- 411 WARREN ST · OQUAWKA, IL · 61469
- Census ID
- 249962
Special district governmentFunctioning
Oran and East Lincoln Drainage District 1
DRAINAGE
- County area
- Logan
- Contact
- 216 S CENTER ST · CLINTON, IL · 61727-1920
- Census ID
- 215162
Special district governmentFunctioning
Orangeville Fire Protection District
LOCAL FIRE PROTECTION
- County area
- Stephenson
- Contact
- PO BOX 74, 306 W HIGH ST · ORANGEVILLE, IL · 61060
- Census ID
- 146746
Special district governmentFunctioning
Orchardville Fire Protection District
LOCAL FIRE PROTECTION
- County area
- Wayne
- Contact
- 1721 CO HWY 13 · XENIA, IL · 62899
- Census ID
- 196261
Special district governmentFunctioning
Oregon Fire Protection District
LOCAL FIRE PROTECTION
- County area
- Ogle
- Contact
- 106 S 1ST ST · OREGON, IL · 61061
- Census ID
- 204384
Source: U.S. Census Bureau, 2025 Government Units Listing. A listed entity is not proof that its board is elected or that the contact field identifies an officeholder.