Illinois — Config Review
Profile config
Judicial Regions24
School Districts35
Concepts (12)
Illinois
Local NameIllinois
Has Active GovernmentYes
Default Body NameGeneral Assembly
Executive TitleGovernor
SubdivisionsCounties
Additional Subdivisions
Major CitiesChicago, Aurora, Rockford, Joliet, Naperville, Springfield, Peoria
County
Local NameCounty
Has Active GovernmentYes
Default Body NameCounty Board
Executive RequiredNo
SubdivisionsCities, Villages, Townships
Legislative CommitteesYes
Committees LabelCommittees
City
Local NameCity
Has Active GovernmentYes
Default Body NameCity Council
Executive TitleMayor
Governancestrong-mayor, council-manager
SubdivisionsNo
Township
Local NameTownship
Has Active GovernmentYes
Default Body NameTownship Board
Executive TitleTownship Supervisor
SubdivisionsNo
Village
Local NameVillage
Has Active GovernmentYes
Default Body NameVillage Board
Executive TitleVillage President
Governancecouncil-manager
SubdivisionsNo
School District
Local NameSchool District
Has Active GovernmentYes
Default Body NameBoard of Education
Regional Office of Education
Local NameRegional Office of Education
Local AbbrevROE
Has Active GovernmentYes
Default Body NameROE
House District
Local NameHouse District
Local AbbrevHD
Has Active GovernmentNo
Senate District
Local NameSenate District
Local AbbrevSD
Has Active GovernmentNo
Congressional District
Local NameCongressional District
Local AbbrevCD
Has Active GovernmentNo
Judicial Circuit
Local NameJudicial Circuit
Has Active GovernmentNo
Special District
Local NameSpecial District
Has Active GovernmentYes
Governance (2)
Council-Manager
Legislative CommitteesNo
Legislative DistrictsNo
Strong-Mayor
Legislative CommitteesYes
Committees LabelCommittees
Sources (5)
Counties
Urlhttps://data.isgs.illinois.edu/arcgis/rest/services/Reference/County_Boundaries/MapServer/0
ProviderIllinois State Geological Survey (ISGS)
TypeArcGIS REST MapServer
Noteconfirmed queryable (JSON/GeoJSON, up to 2000 records/query) — county name and FIPS fields present; a count wasn't independently re-verified this session.
Municipalities
Urlhttps://geoservices.epa.illinois.gov/arcgis/rest/services/Political/PoliticalBoundaries/MapServer/1
ProviderIllinois EPA GeoServices, layer "Municipal Boundaries" (sourced from the IL Dept of Revenue)
TypeArcGIS REST MapServer
Noteverified 1,296 rows (IL has ~1,298 municipalities — close match). Underlying boundary vintage is dated ~2012 in the metadata, so treat as authoritative-but-not-annually-refreshed. No confirmed active- township layer was located.
Field mapping (4)
DIST NAMEname
TYPE concept_id (city/village)
CODE10 / HOME13CODEattributes.municipality_code
CTYPOP2010 / POP2010attributes.population_estimate (dated — see population below)
School Districts
Statusno live state-hosted GIS REST API confirmed
FallbackCensus TIGER/Line School District shapefiles (elementary/ secondary/unified) — ISBE itself points to these as the authoritative boundary source, supplying the underlying district roster to Census.
Notethe University of Illinois's IECAM "Illinois School District Finder" is an interactive ArcGIS-based web app, but no direct REST query endpoint could be extracted from it.
Educational Region
Statusno live GIS/API source confirmed
Noteonly ArcGIS "Web Mapping Application" viewer items were found for ISBE Regions (not a raw feature service), plus isbe.net/roe and illinoisreportcard.com/ListROEs.aspx as human-readable directories (35 ROEs + 3 Cook County ISCs).
Population
Statusnot yet ingested
Recommended SourceUS Census Bureau Population Estimates Program (PEP) — https://api.census.gov/data/{year}/pep/population — joins on the county FIPS from the counties source above.