Ward precincts, which function as local election districts to determine the polling places for voters, based on their addresses. Precincts are based on U.S. Census Bureau blocks. These precincts were first used for the 2014 elections and first used for Chicago municipal elections in 2015.

This dataset is in a format for spatial datasets that is inherently tabular but allows for a map as a derived view. Please click the indicated link below for such a map.

To export the data in either tabular or geographic format, please use the Export button on this dataset.

Geospatial data about Chicago, Illinois Vote Dry Precincts. Export to CAD, GIS, PDF, CSV and access via API.

Ward precincts, which function as local election districts, in Chicago. To view or use these files, compression software and special GIS software, such as ESRI ArcGIS, is required. To download, right-click the "Download" link above and choose "Save link as."

Ward precincts, which function as local election districts to determine the polling places for voters, based on their addresses. Precincts are based on U.S. Census Bureau blocks. These precincts were first used for the November 2022 election and first used for Chicago municipal elections in 2023. Neither this description nor the dataset should be relied upon in situations where legal precision is required. ​​​​​This dataset is in a forma​​t for spatial datasets that is inherently tabular but allows for a map as a derived view. Please click the indicated link below for such a map. To export the data in either tabular or geographic format, please use the Export button on this dataset.

Geospatial data about Chicago, Illinois Precincts. Export to CAD, GIS, PDF, CSV and access via API.

Suburban Cook County Election Precincts maintained by the Cook County Clerk's Election Department. Not included are the City of Chicago Election Precincts which are maintained by the Chicago Board Of Elections.Voting District Project of the Census Redistricting Data Program commenced in Summer of 2017 to establish the state’s Voting precincts within the bureau’s tiger geography. The initial phase used the Bureau’s GUPS plugin for QGIS to update the districts from the 2010 round, and then a secondary verification phase took place to ensure the updated voting districts were properly enacted into Tiger geographic files. A post census effort took place in December 2021 to cut the number of precincts down countywide to 1430.Election Data Services conducted Phase 2 of the Census Redistricting Data Program for the State of Illinois, as well as implemented changes made post census in Cook County.Precincts are updated as needed before every election by the Cook County Clerk's Elections Department.

Suburban Cook County Election Precincts maintained by the Cook County Clerk's Election Department. Not included are the City of Chicago Election Precincts which are maintained by the Chicago Board Of Elections. An ArcGIS Service is available at: https://hub-cookcountyil.opendata.arcgis.com/datasets/0e91b48d49744346be343f0cb99d25bd_0/ Voting District Project of the Census Redistricting Data Program commenced in Summer of 2017 to establish the state’s Voting precincts within the bureau’s tiger geography. The initial phase used the Bureau’s GUPS plugin for QGIS to update the districts from the 2010 round, and then a secondary verification phase took place to ensure the updated voting districts were properly enacted into Tiger geographic files. A post census effort took place in December 2021 to cut the number of precincts down countywide to 1430. Election Data Services conducted Phase 2 of the Census Redistricting Data Program for the State of Illinois, as well as implemented changes made post census in Cook County. Precincts are updated as needed before every election by the Cook County Clerk's Elections Department.

Ward precincts, which function as local election districts to determine the polling places for voters, based on their addresses. Precincts are based on U.S. Census Bureau blocks. These precincts were used in 2010.

NOTE: This dataset is historical-only. The Illinois Liquor Control Act of 1934 permits voters in any precinct in the City of Chicago to vote an entire precinct “dry” through a local option referendum. If a precinct has been voted “Dry/Dry,” no liquor licenses, other than a caterer’s liquor license, may be issued. If a precinct has been voted "Dry/Wet" no liquor licenses can be obtained for the consumption of alcohol on premise but the sale of package goods is allowed along with the caterer’s liquor license. The VOTE_DRY_I column is the Precinct/Ward which was voted dry. It reflects the Ward/Precinct that was effective at the date of the referendum. Ward/Precinct boundaries may have changed since that date. STATUS column indicates if the precinct was voted 'dry/dry' or 'dry/wet'. To view or use this KML file, special GIS software such as Google Earth is required. To download, right-click the "Download" link above and choose "Save link as."

The Chicago City Code, Chapter 4-17, allows for shared housing rentals to be prohibited or restricted in specified precincts. This dataset shows those precincts for which such restrictions have been requested by voter petition, including those approved by ordinance and potentially those for which an attempted repeal of the prohibition is underway or complete. Current status can be determined from the most recent date.

The 2020 election precinct feature class interprets the location and describes the boundaries of all election precincts in suburban townships in Cook County, Illinois. Suburban Cook County includes all municipalities except Chicago. A precinct, which is also called an election district, is an administrative unit for the election department to distribute election materials and resources, conduct elections, and to report election results. Each precinct has a specific polling place where its residents go to vote. Sometimes several precincts will use the same polling place.

Ward boundaries in Chicago from May 2003 to May 2015, corresponding to the dates when a new City Council is sworn in, based on the immediately preceding elections. Neither this description nor the dataset should be relied upon in situations where legal precision is required. The data can be viewed on the Chicago Data Portal with a web browser. However, to view or use the files outside of a web browser, you will need to use compression software and special GIS software, such as ESRI ArcGIS (shapefile) or Google Earth (KML or KMZ), is required.

Chicago Heights Municipal Atlas Data Layers - March 25, 2020 uploadData LayersWards (2018)* Alderman's name and contact emailCity-Owned Parcels* Unknown year of data, but differs from 2016 Cook County Assessor dataHeritage Preservation Overlay DistrictVoting Precincts (2018)Municipal Boundary (2016)* Differs from Cook County municipal boundary data, but this boundary will be prioritized.Vacant Properties (2016) - Points [for heat map]Vacant Properties (2016) - ParcelsLand Bank Properties (2017)Lawn Maintenance Parcels (2019)

This dataset outlines precincts in the Chicago Southland region for 2011.

The 2019 election precinct feature class interprets the location and describes the boundaries of all election precincts in suburban townships in Cook County, Illinois. Suburban Cook County includes all municipalities except Chicago. A precinct, which is also called an election district, is an administrative unit for the election department to distribute election materials and resources, conduct elections, and to report election results. Each precinct has a specific polling place where its residents go to vote. Sometimes several precincts will use the same polling place.

The 2015 election precinct feature class interprets the location and describes the boundaries of all election precincts in suburban townships in Cook County, Illinois. Suburban Cook County includes all municipalities except Chicago. A precinct, which is also called an election district, is an administrative unit for the election department to distribute election materials and resources, conduct elections, and to report election results. Each precinct has a specific polling place where its residents go to vote. Sometimes several precincts will use the same polling place.

This list reflects precincts in the Chicago Southland region. This is reflective of the year 2011.

This dataset contains all current and active business licenses issued by the Department of Business Affairs and Consumer Protection. This dataset contains a large number of records /rows of data and may not be viewed in full in Microsoft Excel. Therefore, when downloading the file, select CSV from the Export menu. Open the file in an ASCII text editor, such as Notepad or Wordpad, to view and search.

Data fields requiring description are detailed below.

APPLICATION TYPE: 'ISSUE' is the record associated with the initial license application. 'RENEW' is a subsequent renewal record. All renewal records are created with a term start date and term expiration date. 'C_LOC' is a change of location record. It means the business moved. 'C_CAPA' is a change of capacity record. Only a few license types my file this type of application. 'C_EXPA' only applies to businesses that have liquor licenses. It means the business location expanded.

LICENSE STATUS: 'AAI' means the license was issued.

Business license owners may be accessed at: http://data.cityofchicago.org/Community-Economic-Development/Business-Owners/ezma-pppn To identify the owner of a business, you will need the account number or legal name.

Data Owner: Business Affairs and Consumer Protection

Time Period: Current

Frequency: Data is updated daily

About

There have been several blog posts about open data in Chicago (see here and here) - though there doesn't seem to be a single registry of open data.

Political/administrative boundary data sets are available at:

• Boundary Data

Datasets include:

• Census Block
• Census Data -- November 2004
• Census Tracts
• City Boundary
• Citywide Wards Map
• Community Areas
• IL House
• IL Senate
• Surrounding Municipalities
• Neighborhoods
• Precincts
• TIFS 2008
• US Congress
• Zipcodes

Openness

Assume this is intended to be open, but no information found on whether or not data can legally be reused.

This dataset contains all current and active business licenses issued by the Department of Business Affairs and Consumer Protection. This dataset contains a large number of records /rows of data and may not be viewed in full in Microsoft Excel. Therefore, when downloading the file, select CSV from the Export menu. Open the file in an ASCII text editor, such as Notepad or Wordpad, to view and search.

Data fields requiring description are detailed below.

APPLICATION TYPE: 'ISSUE' is the record associated with the initial license application. 'RENEW' is a subsequent renewal record. All renewal records are created with a term start date and term expiration date. 'C_LOC' is a change of location record. It means the business moved. 'C_CAPA' is a change of capacity record. Only a few license types my file this type of application. 'C_EXPA' only applies to businesses that have liquor licenses. It means the business location expanded.

LICENSE STATUS: 'AAI' means the license was issued.

Business license owners may be accessed at: http://data.cityofchicago.org/Community-Economic-Development/Business-Owners/ezma-pppn To identify the owner of a business, you will need the account number or legal name.

Data Owner: Business Affairs and Consumer Protection

Time Period: Current

Frequency: Data is updated daily