This data contains information about people involved in a crash and if any injuries were sustained. This dataset should be used in combination with the traffic Crash and Vehicle dataset. Each record corresponds to an occupant in a vehicle listed in the Crash dataset. Some people involved in a crash may not have been an occupant in a motor vehicle, but may have been a pedestrian, bicyclist, or using another non-motor vehicle mode of transportation. Injuries reported are reported by the responding police officer. Fatalities that occur after the initial reports are typically updated in these records up to 30 days after the date of the crash. Person data can be linked with the Crash and Vehicle dataset using the “CRASH_RECORD_ID” field. A vehicle can have multiple occupants and hence have a one to many relationship between Vehicle and Person dataset. However, a pedestrian is a “unit” by itself and have a one to one relationship between the Vehicle and Person table.

FOIA requests received by 311 as of May 1, 2010

FOIA requests received by the Office of the Mayor as of May 1, 2010

The Annual Appropriation Ordinance is the final City operating budget as approved by the City Council. It reflects the City’s operating budget at the beginning of the fiscal year on January 1. This dataset details the budgeted expenditures in the Ordinance and identifies them by department, appropriation account, and funding type: Local, Community Development Block Grant Program (CDBG), and other Grants. “Local” funds refer to those line items that are balanced with locally generated revenue sources, including but not limited to the Corporate Fund, Water Fund, Midway and O’Hare Airport funds, Vehicle Tax Fund, Library Fund and General Obligation Bond funds. Owner: Budget and Management. Frequency: Data is updated annually. For more information about the budget process, visit the Budget Documents page: http://j.mp/lPotWf.

This list of 'L' stops provides location and basic service availability information for each place on the CTA system where a train stops, along with formal station names and stop descriptions.

Inspections conducted by the Department of Environment (DOE) from April, 1997 to December 31, 2011 and by the Department of Public Health (CDPH) since January 1, 2012. On January 1, 2012, the Department of Environment was disbanded and all its inspection, permitting, and enforcement authorities were transferred to the CDPH.
Data fields requiring description are detailed below.
INSPECTION ID: This is the unique identifier of the inspection. DOE inspection records are prefixed with “DOEINS.” CDPH inspections are numeric.
INSPECTION NAME: This is the name of the site that was inspected. This is usually the company/owner name, address, or building name.
MAPPED LOCATION: Contains the latitude/longitude coordinates of the facility. The latitude/longitude coordinate is determined through the Chicago Open Data Portal’s geocoding process.
INSPECTOR: Contains the name of the inspector or engineer who conducted the inspection.
INSPECTION CATEGORY: Describes the type of inspection performed. Generally, inspection types can be organized into the following categories:
“COMPLAINT RESPONSE” Inspections conducted in response to citizen complaints. See CDPH Environmental Complaints dataset for type of environmental complaints.
“SOLID WASTE INSPECTIONS” Inspections of permitted waste facilities and inspections conducted as part of a delegation agreement with the Illinois Environmental Protection Agency. These inspections include inspections of solid and liquid waste handling facilities, recycling facilities, junkyards, compost facilities, temporary and permanent rock crushing facilities and illegal dump sites.
“AIR QUALITY INSPECTION”: Inspections of all permitted industrial facilities with potential to emit pollutants into the air, including area sources such as dry cleaners, motor vehicle repair facilities and architectural surface cleaning.
“HAZMATS” Inspections conducted in response to a hazardous material incident and typically conducted with the Fire Department’s HAZMAT units. Also includes inspection audits of facilities subject to Tier II reporting under the Emergency Planning and Community Right-to-Know Act (EPCRA) .
“NOISE” Inspections conducted in response to noise-related complaints.
“TANK INSPECTIONS” Underground Storage Tank (UST) inspections conducted in conjunction with a UST permit and as part of a delegation agreement with the Illinois Office of the State of Fire Marshall (OSFM).These inspections include including UST Removal, UST Abandon, UST Install, UST Upgrade, UST Reline, UST Repair, Stage II and UST Green Decal. This Inspection Type also includes non-OSFM inspections for Aboveground Storage Tank (AST) permits, Abandoned Gas Stations, Leaking Underground Storage Tanks (LUST), UST Emergency Response, historic Filling Station Licenses, and miscellaneous tank inspections.
“DEMOLITION/ASBESTOS” Inspections associated with Demolition or NESHAP Notice of Intents (NOIs). See Chapter 11-4 Article XVIII (see http://tinyurl.com/crvyb29).
“MISC INSPECTIONS” Other inspections including but not limited Water Pollution, Site Assessment, historic Bus Facility and historic Invasive Species inspections per Chapter 11-4 Article XXII (see http://tinyurl.com/crvyb29) of the Municipal Code.
INSPECTION SUB CATEGORY: More specific inspection type under an Inspection Category.
INSPECTION DATE: Date when inspection occurred.
NARRATIVE: Contains the inspector’s narrative log of the inspection.
DATA SOURCE: The city department that collected the data.

FOIA requests received by the Chicago Police Board as of May 1, 2010

This dataset contains the annual number of births and crude birth rate (births per 1,000 residents) with corresponding 95% confidence intervals, by Chicago community area, for the years 1999 – 2009. See the full dataset description for more information: https://data.cityofchicago.org/api/assets/8C4E8E51-6162-4DF3-9C29-D3F205FA2FB4

Street sweeping schedule by Ward and Ward section number. To find your Ward section, visit https://data.cityofchicago.org/d/qixn-wjxu. For more information about the City's Street Sweeping program, go to http://bit.ly/H2PHUP.

This dataset shows approximate, average, weekday boardings by bus stop from the month of October 2012.

List of schools by name, address, type and grades. Note some facilities house multiple schools.

FOIA requests received by the Office of Emergency Management and Communications as of May 1, 2010

FOIA requests received by Transportation as of May 1, 2010

FOIA requests received by Business Affairs and Consumer Protection as of May 1, 2010

311 Service Requests received by the City of Chicago. This dataset includes requests created after the launch of the new 311 system on 12/18/2018 and some records from the previous system, indicated in the LEGACY_RECORD column.

For purposes of all columns indicating geographic areas or locations, please note that requests of the type 311 INFORMATION ONLY CALL often are entered with the address of the City's 311 Center.

Environmental complaints received by the Department of Environment (DOE) from January 1993 to December 31, 2011 and by the Department of Public Health (CDPH) since January 1, 2012. On January 1, 2012, the DOE was disbanded and all its inspection, permitting, and enforcement authorities were transferred to the CDPH.
Data fields requiring description are detailed below.
COMPLAINT ID: This is the unique identifier of the complaint incident.
COMPLAINT TYPE: Specifies the type of complaint. CDPH complaint types are “Abandoned Site”, “Air Pollution Work Order”, “Asbestos Work Order”, “Construction and Demolition”, “Toxics Hazardous Materials Work Order”, ”Illegal Dumping Work Order”, “Noise Complaint”, “Permits Issued by DOE Work Order”, “Recycling Work Order”, “Service Stations/Storage Tanks Work Order”, “Vehicle Idling Work Order”, and “Water Pollution.” For consistency, historic DOE complaint types were renamed to match the most appropriate CDPH complaint type. DOE complaint types that had no matches are designated as “Other.”
MAPPED LOCATION: Contains latitude/longitude coordinates of the site as determined through the Chicago Open Data Portal’s geocoding engine. In instances where the facility address is a range, the lower number (the value in the “Street Number From” column) is used for geocoding. For example, for the range address 1000-1005 S Wabash Ave, the Mapped Location would be the coordinates for 1000 S Wabash Ave.
INSPECTOR: Contains the badge or ID number of the inspector or engineer who conducted the compliant inspection.
COMPLAINT DATE: Date complaint was received by the department.
COMPLAINT DETAIL: Brief description of the nature of the complaint.
INSPECTION LOG: This is the inspector’s narrative log of the complaint inspection.
DATA SOURCE: The city department that collected the data.

This dataset gives annual ridership totals dating to the mid-1980s. Numbers are presented in boardings (see attached readme file for information on how these numbers are calculated).

This dataset contains the historical estimated congestion for 1270 traffic segments, in selected time periods from August 2011 to May 2018. Newer records are in https://data.cityofchicago.org/d/sxs8-h27x. The most recent estimates for each segment are in https://data.cityofchicago.org/d/n4j6-wkkf.

The Chicago Traffic Tracker estimates traffic congestion on Chicago’s arterial streets (non-freeway streets) in real-time by continuously monitoring and analyzing GPS traces received from Chicago Transit Authority (CTA) buses. Two types of congestion estimates are produced every 10 minutes: 1) by Traffic Segments and 2) by Traffic Regions or Zones. Congestion estimates by traffic segments gives observed speed typically for one-half mile of a street in one direction of traffic. Traffic Segment level congestion is available for about 300 miles of principal arterials. Congestion by Traffic Region gives the average traffic condition for all arterial street segments within a region. A traffic region is comprised of two or three community areas with comparable traffic patterns. 29 regions are created to cover the entire city (except O’Hare airport area). There is much volatility in traffic segment speed. However, the congestion estimates for the traffic regions remain consistent for a relatively longer period. Most volatility in arterial speed comes from the very nature of the arterials themselves. Due to a myriad of factors, including but not limited to frequent intersections, traffic signals, transit movements, availability of alternative routes, crashes, short length of the segments, etc. Speed on individual arterial segments can fluctuate from heavily congested to no congestion and back in a few minutes. The segment speed and traffic region congestion estimates together may give a better understanding of the actual traffic conditions. Current estimates of traffic congestion by region are available at http://bit.ly/Vz3rIh.

The Chicago Park District maintains weather sensors at beaches along Chicago's Lake Michigan lakefront. These sensors generally capture the indicated measurements hourly while the sensors are in operation during the summer. During other seasons and at some other times, information from the sensors may not be available. See https://data.cityofchicago.org/id/qmqz-2xku for a dataset with similar measurements on the lake water, itself. The sensor locations are listed at https://data.cityofchicago.org/d/g3ip-u8rb.

The Annual Appropriation Ordinance is the final City operating budget as approved by the City Council. It reflects the City’s operating budget at the beginning of the fiscal year on January 1, 2013.This dataset displays the positions and related salaries detailed in the budget as of January 1. It is extracted from the personnel portion of the Appropriation Ordinance. The dataset presents the position titles (without names) and salaries described in the budget, but does not provide a reflection of the current city workforce with full names and salaries. Disclaimer: the “Total Budgeted Units” column displays either A) the number of employees AND vacancies associated with a given position, or B) the number of budgeted units (ie. hours/months) for that position. “Position Control” determines whether Total Budgeted Units column will count employees and vacancies or hours/months. If a Position Control is 1, then employees and vacancies are displayed; if a Position Control is 0, then the total number of hours/months recorded is displayed. Owner: Budget and Management. Frequency: Data is updated annually. For information on the current city workforce, with names, positions and salaries, visit the "Current Employee Names, Salaries, and Position Titles" dataset: http://j.mp/iutKlR.

This information is derived from payments made to City of Chicago employees from January 1 of the previous calendar year to the present. Payments are initiated by City Departments and issued by the Department of Finance. Descriptions of each attribute follow:

- Voucher Number: This is a unique number assigned to each payment and is used for identifying that particular payment.

- Amount: This is the dollar amount of the payment made.

- Payment Date: This is the date payment was issued.

- Vendor Name: This is the name of the person or entity to which payment was made.

- Description: This is an optional field that indicates the reason payment was made.

This dataset lists monthly station entry averages, by day type (Weekday, Saturday or Sunday/Holiday), as well as monthly totals, beginning in 2001. Note that some stations (such as on the Cermak Branch--now Pink Line) and Skokie did not have Saturday and/or Sunday/holiday service until more recent years, although, in cases where weekday service ran past midnight, late evening fares may appear as part of Saturday tallies.

The City of Chicago launched the Micro-Market Recovery Program (MMRP), a coordinated effort among the City, not-for-profit intermediaries, and non-profit and for-profit capital sources to improve conditions, strengthen property values, and create environments supportive of private investment in targeted markets throughout the city. The goal of MMRP is to improve conditions, strengthen property values, and create environments supportive of private investment in targeted areas by strategically deploying public and private capital and other tools and resources in well-defined micro-markets. This MMRP Violations and Inspections dataset contains Department of Buildings (DOB) Violations and associated Inspections that have occured at properties falling within an MMRP Zone. Permits, Cases and Violations can be linked to the MMRP Geographies dataset using ADDRKEY or ADDRGRPKEY. To link Violations and Inspections to their Permits and Cases use Violation PERMITORCASEKEY and link to Permits APKEY_PERMIT and Cases APKEY_CASE. *Note: Inspections are included only when at least one violation was written. Inspections without violations are not included in this dataset.

FOIA requests received by Law as of May 1, 2010

Permits issued by the Department of Environment (DOE) from January 1993 to December 31, 2011 and by the Department of Public Health (CDPH) since January 1, 2012. This dataset also includes tank permits issued by CDPH on behalf of the Office of the Illinois State Fire Marshall (OSFM). On January 1, 2012, the DOE was disbanded and all its inspection, permitting, and enforcement authorities were transferred to the CDPH.
Data fields requiring description are detailed below.
APPLICATION ID: This is the unique id of the issued permit. Permits from the historic DOE are prefixed with “DOE.” Permits issued by CDPH are prefixed with “ENV_”
APPLICATION NAME: This is the name of the site that is being permitted. This is usually the company/owner name, address, or building name.
MAPPED LOCATION: Contains latitude/longitude coordinates of the site as determined through the Chicago Open Data Portal’s geocoding engine. In instances where the facility address is a range, the lower number (the value in the “Street Number From” column) is used for geocoding. For example, for the range address 1000-1005 S Wabash Ave, the Mapped Location would be the coordinates for 1000 S Wabash Ave.
APPLICATION TYPE:
"ABOVEGROUND STORAGE TANK" Permits to install or remove an Above Ground Storage Tank (AST) for dispensing and non-dispensing with a volume greater than 110 gallons. For more information go to http://tinyurl.com/bg7yrvx.
"UNDERGROUND STORAGE TANK" Permits to install, upgrade, repair, remove, abandon a UST or install an interior lining or Stage II vapor recovery systems in a UST. For more information go to http://tinyurl.com/bkqa8a8.
“AIR POLLUTION CONTROL PERMIT” Permits to install, operate, erect, construct, reconstruct, alter or add a piece of process equipment, process area, or air pollution control equipment and for sandblasting, grinding or chemical washing of any building, facility, statue or other architectural surface. This also includes annual certificate of operation (COO) for regulated process equipment, process area, or air pollution control equipment as defined in 11-4-610 of the Municipal Code. For more information go to http://tinyurl.com/az7ph79 .
“RECYCLING FACILITY” Permits for recycling facilities including but not limited to junkyards, scrap metal, vehicle, vehicle parts, clean construction and demolition debris, and composting facilities. For more information go to http://tinyurl.com/azzpa93 .
“WASTE HANDLING FACILITY” Permits for solid waste transfer stations, liquid waste facilities, and permanent rock crushing facilities. For more information, refer to Chapter 11-4 Article IX and Article XIV of the Municipal Code at http://tinyurl.com/crvyb29.
“TEMPORARY ROCK CRUSHING” Permits to temporarily process concrete debris at the construction or demolition site. For more information go to http://tinyurl.com/a6atybq.
APPLICATION SUBTYPE: The specific work type being permitted as applicable.
STATUS: The current status of the permit (e.g. Open, Closed, Stop Work, etc.).
ISSUE/ENTRY DATE: For historic DOE records, this date is the issue date of the permit. For CDPH records, this is either the date the permit was issued, or the date the permit application was entered into the database.
EXPIRATION DATE: This is the permit expiration date. Not all permits may have an expiration date. Some permits are renewed annually or every three years. If the applicant does not renew, the permit Status will be set to “Closed.”
COMMENT: Contains general comments and permit-specific information.
DATA SOURCE: The department that collected or owns the data.