Chicago community area map

Source: City of Chicago Data Portal, "Boundaries - Community Areas"
(dataset igwz-8jzy), retrieved 2026-09-23, EPSG:4326.
https://data.cityofchicago.org/d/igwz-8jzy
Terms: City of Chicago Data Portal terms of use
https://www.chicago.gov/city/en/narr/foia/data_disclaimer.html

Processing: geometry simplified for display with a tolerance of 0.0002
degrees, islets under about 0.02 km² dropped and coordinates rounded to six
decimals. IDs 01-24 are assigned for this map;
they are not the city's official community area numbers.

Chicago has 77 community areas. The map shows twenty-four of them: Rogers
Park, Edgewater, Uptown, Lake View, Lincoln Park, Logan Square, West Town, Near
North Side, Loop, Near West Side, Near South Side, Lower West Side, Armour
Square, Douglas and Hyde Park (IDs 01-15, north to south), then Lincoln
Square, North Center, Avondale, Humboldt Park, Bridgeport, Oakland, Grand
Boulevard, Kenwood and Woodlawn (IDs 16-24), added so the areas form one
piece. The map is for geographic learning, not
navigation or legal boundaries.

Sight coordinates were checked against OpenStreetMap features, with pins
representing locations rather than guaranteed entrances.

Suburb boundaries (ids s01 to s32, Evanston to Plainfield)

Source: U.S. Census Bureau, 2023 Cartographic Boundary File, Illinois places
(cb_2023_17_place_500k), retrieved 2026-09-23, simplified.
https://www2.census.gov/geo/tiger/GENZ2023/shp/cb_2023_17_place_500k.zip
Terms: public domain, a work of the U.S. federal government.

Rebuilt 2026-09-24 as one piece with no gaps (scripts/build-us-city-districts.py):
the other 53 community areas are grouped into sides (IDs 25-31: Far North
Side, Northwest Side, West Side, Southwest Side, South Side, Far Southeast
Side, Far Southwest Side), and the land between the named suburbs is filled
with regions (ids s33-s42) built from Census 2023 cartographic boundary
county subdivisions for Cook County (cb_2023_17_cousub_500k) and counties
(cb_2023_us_county_500k) for DuPage, Lake, Kane and Will in Illinois and
Lake County, Indiana. Public domain. Areas are simplified together as a
coverage so neighbors share one edge.