Beach E. coli Predictions

The Chicago Park District issues swim advisories at beaches along Chicago's Lake Michigan lakefront based on E. coli levels. This dataset shows predicted E. coli levels based on an experimental analytical modeling approach.

Healthy Chicago Equity Zones

Healthy Chicago Equity Zones is an initiative of the Chicago Department of Public Health (CDPH) to organize and support hyperlocal, community-led efforts that promote health and racial equity. Chicago is divided into six Equity Zones, through which the City collaborates with regional and neighborhood organizations to address issues of common concern – like COVID-19 vaccine distribution, health care access, violence prevention, and food security – and improve quality of life at the neighborhood level. The Equity Zones are the following. Far South: Beverly, Burnside, Calumet Heights, East Side, Hegewisch, Morgan Park, Mount Greenwood, Pullman, Riverdale, Roseland, South Deering, Washington Heights, West Pullman Near South: Auburn Gresham, Avalon Park, Chatham, Douglas, Englewood, Fuller Park, Grand Boulevard, Greater Grand Crossing, Hyde Park, Kenwood, Oakland, South Chicago, South Shore, Washington Park, West Englewood, Woodlawn North/Central: Edgewater, Lake View, Lincoln Park, Lincoln Square, Loop, Near North Side, Near South Side, North Center, Rogers Park, Uptown, West Ridge Northwest: Albany Park, Avondale, Belmont Cragin, Dunning, Edison Park, Forest Glen, Hermosa, Irving Park, Jefferson Park, Logan Square, Montclare, North Park, Norwood Park, O'Hare, Portage Park Southwest: Archer Heights, Armour Square, Ashburn, Bridgeport, Brighton Park, Chicago Lawn, Clearing, Gage Park, Garfield Ridge, McKinley Park, New City, West Elsdon, West Lawn West: Austin, East Garfield Park, Humboldt Park, North Lawndale, South Lawndale, Lower West Side, Near West Side, West Garfield Park, West Town ​​​​​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.

Libraries - 2012 Circulation by Location

Circulation figures include new checkouts as well as renewals. In January all branch locations were closed on Monday, January 9, Monday, January 23 and Monday, January 30. Beginning in February, all branch locations restored partial Monday hours, from 2 p.m. to 6 p.m. On June 18, all branch locations restored full Monday hours. Edgewater closed 6/16/11 for construction of a new branch scheduled to open in mid-2013. The library’s bookmobile opened 6/24/11 for Edgewater holds pickup and returns. Douglass closed for 10 days in February for roof repairs. Humboldt Park closed 3/26/12 for facility improvements and expansion. Lincoln Park closed for four days in August for replacement of the air conditioning system. Many locations experienced sporadic closures in summer 2012 due to air conditioning issues and area power outages. Albany Park closed 9/22/12 for construction of a new branch and will remain closed until 2014. Brighton Park, Jefferson Park and Portage Cragin were closed 11/26/12-12/7/12 for replacement of their HVAC systems.

Libraries - 2012 Visitors by Location

The Chicago Public Library has more than 70 locations. In January all branch locations were closed on Monday, January 9, Monday, January 23 and Monday, January 30. Beginning in February, all branch locations restored partial Monday hours, from 2 p.m. to 6 p.m. On June 18, all branch locations restored full Monday hours. Edgewater closed 6/16/11 for construction of a new branch scheduled to open in mid-2013. The library’s bookmobile opened 6/24/11 for Edgewater holds pickup and returns. Douglass closed for 10 days in February for roof repairs. Humboldt Park closed 3/26/12 for facility improvements and expansion. Lincoln Park closed for four days in August for replacement of the air conditioning system. Many locations experienced sporadic closures in summer 2012 due to air conditioning issues and area power outages. Albany Park closed 9/22/12 for construction of a new branch and will remain closed until 2014. Brighton Park, Jefferson Park and Portage Cragin were closed 11/26/12-12/7/12 for replacement of their HVAC systems. * Count does not reflect the total building visitor count due to location of traffic counter. Community room and program traffic are not included in totals.

Libraries - 2012 Holds Placed by Location

Patrons may place holds on desired materials either online or by contacting any CPL location. In January all branch locations were closed on Monday, January 9, Monday, January 23 and Monday, January 30. Beginning in February, all branch locations restored partial Monday hours, from 2 p.m. to 6 p.m. On June 18, all branch locations restored full Monday hours. Edgewater closed 6/16/11 for construction of a new branch scheduled to open in mid-2013. The library’s bookmobile opened 6/24/11 for Edgewater holds pickup and returns. Douglass closed for 10 days in February for roof repairs. Humboldt Park closed 3/26/12 for facility improvements and expansion. Lincoln Park closed for four days in August for replacement of the air conditioning system. Many locations experienced sporadic closures in summer 2012 due to air conditioning issues and area power outages. Albany Park closed 9/22/12 for construction of a new branch and will remain closed until 2014. Brighton Park, Jefferson Park and Portage Cragin were closed 11/26/12-12/7/12 for replacement of their HVAC systems.

Libraries - 2012 Holds Filled by Location

Materials pulled to fulfill patron holds. In January all branch locations were closed on Monday, January 9, Monday, January 23 and Monday, January 30. Beginning in February, all branch locations restored partial Monday hours, from 2 p.m. to 6 p.m. On June 18, all branch locations restored full Monday hours. Edgewater closed 6/16/11 for construction of a new branch scheduled to open in mid-2013. The library’s bookmobile opened 6/24/11 for Edgewater holds pickup and returns. Douglass closed for 10 days in February for roof repairs. Humboldt Park closed 3/26/12 for facility improvements and expansion. Lincoln Park closed for four days in August for replacement of the air conditioning system. Many locations experienced sporadic closures in summer 2012 due to air conditioning issues and area power outages. Albany Park closed 9/22/12 for construction of a new branch and will remain closed until 2014. Brighton Park, Jefferson Park and Portage Cragin were closed 11/26/12-12/7/12 for replacement of their HVAC systems.

Libraries - 2012 Computer Sessions by Location

The Chicago Public Library offers one-hour computer sessions and 15-minute computer sessions. In January all branch locations were closed on Monday, January 9, Monday, January 23 and Monday, January 30. Beginning in February, all branch locations restored partial Monday hours, from 2 p.m. to 6 p.m. On June 18, all branch locations restored full Monday hours. Edgewater closed 6/16/11 for construction of a new branch scheduled to open in mid-2013. The library’s bookmobile opened 6/24/11 for Edgewater holds pickup and returns. Douglass closed for 10 days in February for roof repairs. Humboldt Park closed 3/26/12 for facility improvements and expansion. Lincoln Park closed for four days in August for replacement of the air conditioning system. Many locations experienced sporadic closures in summer 2012 due to air conditioning issues and area power outages. Albany Park closed 9/22/12 for construction of a new branch and will remain closed until 2014. Brighton Park, Jefferson Park and Portage Cragin were closed 11/26/12-12/7/12 for replacement of their HVAC systems.

Beach Lab Data

The Chicago Park District collects and analyzes water samples from beaches along Chicago’s Lake Michigan lakefront. The Chicago Park District partners with the University of Illinois at Chicago Department of Public Health Laboratory to analyze water samples using a new DNA testing method called Rapid Testing Method (qPCR analysis) which tests for Enterococci in order to monitor swimming safety. The rapid testing method (qPCR analysis) is a new method that measures levels of pathogenic DNA in beach water. Unlike the culture based test that requires up to 24 hours of processing, the new rapid testing method requires a 4-5 hours for results. The Chicago Park District can use results of the rapid test to notify the public when levels exceed UPEPA recommended levels, which is 1000* CCE. When DNA bacteria levels exceed 1000 CCE, a yellow swim advisory flag is implemented. For more information please refer to the USEPA Recreational Water Quality Criteria (http://water.epa.gov/scitech/swguidance/standards/criteria/health/recreation). Historically, the Chicago Park District used the culture based analysis method and statistical prediction models to monitor beach water quality. The culture based method tests for Escherichia coli (E. coli) bacteria which is an indicator species for the presence of disease-causing bacteria, viruses, and protozoans that may pose health risks to the public. This method requires 18-24 hours of processing to receive results. The Chicago Park District would use results of the culture based method to notify the public when levels exceed UPEPA recommended levels, which is 235* CFU. When bacteria levels exceed 235 CFU, a yellow swim advisory flag was implemented. This standard is still used at most beaches throughout the Great Lakes region. For more information please refer to the USEPA Recreational Water Quality Criteria. The statistical prediction model forecasted real-time Escherichia coli (E. coli) bacteria levels present in the water. The Chicago Park District (CPD) in partnership with the US Geological Survey, developed statistical prediction models by using weather data pulled from CPD buoys (https://data.cityofchicago.org/d/qmqz-2xku) and weather stations (https://data.cityofchicago.org/d/k7hf-8y75). The Chicago Park District would use results of the predictive model to notify the public when bacteria levels would exceed 235 CFU. When bacteria levels exceed 235 CFU, a yellow swim advisory flag was implemented. * The unit of measurement for Escherichia coli is Colony Forming Units (CFU) per 100 milliliters of water. (Culture Based Method / Statistical Prediction Model) *The unit of measuring DNA is Enterococci Calibrator Cell Equivalents (CCE) per 100 milliliters of water. (Rapid Testing Analysis)

Assessor [Archived 05-31-2023] - Parcel Universe

A complete, historic universe of Cook County parcels with attached geographic, governmental, and spatial data. When working with Parcel Index Numbers (PINs) make sure to zero-pad them to 14 digits. Some datasets may lose leading zeros for PINs when downloaded. Additional notes:<ul><li>Data is attached via spatial join (st_contains) to each parcel's centroid.</li> <li>Centroids are based on <a href="https://datacatalog.cookcountyil.gov/Property-Taxation/ccgisdata-Parcel-2021/77tz-riq7">Cook County parcel shapefiles</a>.</li> <li>Older properties may be missing coordinates and thus also missing attached spatial data (usually they are missing a parcel boundary in the shapefile).</li> <li>Newer properties may be missing a mailing or property address, as they need to be assigned one by the postal service.</li> <li>Attached spatial data does NOT go all the way back to 1999. It is only available for more recent years, primarily those after 2012.</li> <li>The universe contains data for the current tax year, which may not be complete or final. PINs can still be added and removed to the universe up until the Board of Review closes appeals.</li> <li>Data will be updated monthly.</li> <li>Rowcount and characteristics for a given year are final once the Assessor <a href="https://www.cookcountyassessor.com/assessment-calendar-and-deadlines">has certified the assessment roll</a> for all townships.</li> <li>Depending on the time of year, some third-party and internal data will be missing for the most recent year. Assessments mailed this year represent values from last year, so this isn't an issue. By the time the Data Department models values for this year, those data will have populated.</li> <li>Current property class codes, their levels of assessment, and descriptions can be found <a href="https://prodassets.cookcountyassessor.com/s3fs-public/form_documents/classcode.pdf">on the Assessor's website</a>. Note that class codes details can change across time.</li> <li>Due to decrepencies between the systems used by the Assessor and Clerk's offices, <i>tax_district_code</i> is not currently up-to-date in this table.</li></ul> For more information on the sourcing of attached data and the preparation of this dataset, see the <a href="https://gitlab.com/ccao-data-science---modeling/data-architecture">Assessor's data architecture repo</a> on GitLab. <a href="https://datacatalog.cookcountyil.gov/stories/s/i22y-9sd2">Read about the Assessor's 2022 Open Data Refresh.</a>

Resident Satisfaction Survey Results 2018