In order to ensure Cook County’s commitment to transparency, reports on employment actions and monitoring activities are available.

As required under the Employment Plan, Cook County Board President Toni Preckwinkle hired a Compliance Officer whose primary responsibilities include the following:

1. Overseeing compliance with the Employment Plan

2. Maintaining and reviewing the Exempt List

3. Accepting, investigating, and reporting on complaints related to Employment Actions and the Employment Plan

4. Taking steps to evaluate, eliminate, remedy and reporting instances of Political Contacts and Unlawful Political Discrimination; and

5. Training on Employment Plan and reviewing Policies and Procedures.

If you would like to make a complaint alleging non-compliance with the Employment Plan, a Complaint Form is available or you can contact the Compliance Officer directly.

Letitia Dominici, Compliance Officer 118 N. Clark Street, 8th Floor Chicago, IL 60602 Letitia.dominici@cookcountyil.gov

The Independent Inspector General submits Quarterly Reports to the President and the County Board. Quarterly Reports summarize the status of compliance efforts of Cook County government officers and agencies with the non-discrimination and anti-harassment policy requirements set forth in Section 44-53 of the Code of Ordinances and the sexual harassment training requirements of Section 44-58 of the Code of Ordinances.

Commercial valuation data collected and maintained by the Cook County Assessor's Office, from 2021 to present. The office uses this data primarily for valuation and reporting. This dataset consolidates the individual Excel workbooks available on the Assessor's website into a single shared format. Properties are valued using similar valuation methods within each modelgroup, per township, per year (in the year the township is reassessed). This dataset has been cleaned minimally, only enough to fit the source Excel workbooks together - because models are updated for each township in the year it is reassessed, users should expect inconsistencies within columns across time and townships.

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.

This data is property-level. Each 14-digit key PIN represents one commercial property. Commercial properties can and often do encompass multiple PINs. Additional notes:

• Current property class codes, their levels of assessment, and descriptions can be found on the Assessor's website. Note that class codes details can change across time.


• Data will be updated yearly, once the Assessor has finished mailing first pass values. If users need more up-to-date information they can access it through the Assessor's website.


• The Assessor's Office reassesses roughly one third of the county (a triad) each year. For commercial valuations, this means each year of data only contain the triad that was reassessed that year. Which triads and their constituent townships have been reassessed recently as well the year of their reassessment can be found in the Assessor's assessment calendar.


• Commercial properties are calculated by first determining a property’s use (office, retail, apartments, industrial, etc.), then the property is grouped with similar or like-kind property types. Next, income generated by the property such as rent or incidental income streams like parking or advertising signage is examined. Next, market-level vacancy based on location and property type is examined. In addition, new construction that has not yet been leased is also considered. Finally, expenses such as property taxes, insurance, repair and maintenance costs, property management fees, and service expenditures for professional services are examined. Once a snapshot of a property’s income statement is captured based on market data, a standard valuation metric called a “capitalization rate” to convert income to value is applied.


• This data was used to produce initial valuations mailed to property owners. It does not incorporate any subsequent changes to a property’s class, characteristics, valuation, or assessed value from appeals.

Township codes can be found in the legend of this map.

For more information on the sourcing of attached data and the preparation of this dataset, see the Assessor's Standard Operating Procedures for Open Data on GitHub.

Cook County 10-digit parcels with attached distances to various spatial features.

When working with 10-digit Parcel Index Numbers (PINs) make sure to zero-pad them to 10 digits. Some datasets may lose leading zeros for PINs when downloaded. 10-digit PINs do not identify individual condominium units.

Additional notes:

• Centroids are based on Cook County parcel shapefiles.


• Older properties may be missing coordinates and thus also missing attached spatial data (usually they are missing a parcel boundary in the shapefile).


• Attached spatial data does NOT all go back to 2000. It is only available for more recent years, primarily those after 2012.


• This dataset contains data for the current tax year, which may not yet be complete or final. Assessed values for any given year are subject to change until review and certification of values by the Cook County Board of Review, though there are a few rare circumstances where values may change for the current or past years after that.


• Rowcount for a given year is final once the Assessor has certified the assessment roll all townships.


• Data will be updated annually as new parcel shapefiles are made available.

For more information on the sourcing of attached data and the preparation of this dataset, see the Assessor's Standard Operating Procedures for Open Data on GitHub.

A brief outline of the changes users can expect from the Assessor's open data offerings.

Pursuant to the Employment Plan, the OIIG prepares quarterly reports listing the total number of hires, promotions, transfers and terminations involving employees during the preceding three month period, including: (i) the number and type of each such employment action; (ii) the dates of each employment action; (iii) the title of the position; and (iv) whether such employment action was pursuant to a posted or emergency hire.

The Independent Inspector General submits Quarterly Reports to the MWRD Board of Commissioners and Executive Director. The Quarterly Report is released the 15th day of January, April, July, and October of each year. Quarterly Reports chronicle the number and type of investigations initiated, concluded or pending since the date of the last report and whether any recommendations for remedial action were made and whether or not the recommendations were followed by the MWRD.

The Independent Inspector General submits a Quarterly Report to the President and the County Board. The Quarterly Report is released the 15th day of January, April, July, and October of each year. Quarterly Reports chronicle the number and type of investigations initiated, concluded or pending since the date of the last report. The Quarterly Report identifies the number and type of investigations (corruption, fraud, waste, mismanagement, unlawful political discrimination or misconduct) of any County employee, appointed officials, elected officials, contractors, subcontractors, persons seeking County Contracts, or persons seeking certification of eligibility for County contracts or other County Programs. The Quarterly Report identifies the number and type of investigations conducted by the OIIG regarding employees under the separately elected officials. The Quarterly Report identifies the number and type of recommendations made to any department heads or elected officials and whether or not the recommendation was followed.

The County has prepared the CAFR in accordance with Generally Accepted Accounting Principles (GAAP). GAAP require that management provide a narrative introduction, overview and analysis to accompany the basic financial statements in the form of a Management Discussion & Analysis (MD&A). The letter of transmittal in this report is designed to compliment the MD&A and should be read in conjunction with it.

Neighborhood polygons used by the Cook County Assessor's Office for valuation and reporting. These neighborhoods are specific to the Assessor. They are intended to represent homogenous housing submarkets, NOT Chicago community areas or municipalities.

These neighborhoods were reconstructed from individual parcels using spatial buffering and simplification. The full transformation script can be found on the Assessor's GitHub.