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State
MTA Service Alerts: Beginning April 2020
State of New York —
Service alerts in the MTA system are generated to inform passengers of both scheduled and unscheduled events that affect the transit network. These events can range... -
County
Police Incident Blotter (Archive)
Allegheny County / City of Pittsburgh / Western PA Regional Data Center —
The Police Blotter Archive contains crime incident data after it has been validated and processed to meet Uniform Crime Reporting (UCR) standards, published on a... -
State
Catalog of drill log cards and sample images from USGS seismic shothole sites in the National Petroleum Reserve - Alaska (1974-1981)
State of Alaska —
Catalog of drill log cards and sample images from USGS seismic shothole sites in the National Petroleum Reserve - Alaska (1974-1981), Raw Data File 2025-18, provides... -
City
LADOT Parking Meter Occupancy - Archive
City of Los Angeles —
Monthly archive of all parking meter sensor activity over the previous 36 months (3 years). Updated monthly for data 2 months prior (eg. January data will be... -
County
Assessor [Archived 05-11-2022] - Residential Sales Data
Cook County of Illinois —
This is the data set of residential sales used by the Cook County Assessor in their Computer Assisted Mass Appraisal system used to assess residential property... -
City
Historical License Applications
City of New York —
This dataset represents the state of completed license applications and renewals City Agencies Management Information System, (CAMIS) as of October 2013. -
County
Assessor [Archived 05-11-2022] - First Pass Values
Cook County of Illinois —
As of February 14, 2020 this dataset will be considered archived information and will no longer be updated. First-pass property values as assessed by the Cook County... -
County
Assessor [Archived 05-11-2022] - Property Locations
Cook County of Illinois —
This data set includes property locations and attached spatial data for all Cook County parcels. Spatial matching was based on parcel centroids. Older properties may... -
County
Assessor [Archived 05-11-2022] - Residential Property Characteristics
Cook County of Illinois —
Assessment dataset used by the Cook County Assessor in their Computer Assisted Mass Appraisal (CAMA) system used to assess residential properties in Northern... -
City
Historical Licenses
City of New York —
This dataset features businesses and individuals that were issued a DCWP license and the status of those licenses as of October 2013. A license is required to... -
County
Assessor [Archived 05-11-2022] - Residential Modeling Characteristics (Chicago)
Cook County of Illinois —
This data set contains characteristic data points used by the Cook County Assessor in the 2021 Chicago reassessment to produce initial estimates of the current market... -
City
Dataset Removals
City of New York —
A listing of datasets removed from NYC Open Data and the reason for their removal. -
City
[TEST] Austin Crash Report Data - Crash Level Records
City of Austin —
This is a test dataset for development only. Our official crash record dataset is available here: https://data.austintexas.gov/Transportation-and-Mobility/Austin-... -
City
Council_Districts_Archive
City of New Orleans —
This layer represents the Council Districts for the City of New Orleans that were no longer effective as of May 5, 2014. These boundaries changed based on... -
County
Assessor [Archived 05-11-2022] - Experimental Single Family Sales Comparables
Cook County of Illinois —
A data set showing algorithmically determined sales comparables for single family properties in Lake Township -
County
Assessor [Archived 05-11-2022] - Residential Exemption Amounts
Cook County of Illinois —
This data displays total exempt EAV and total exemptions by tax code. Since residential exemptions reveal sensitive information about individual taxpayers and... -
State
Assets retired from data.ct.gov
State of Connecticut —
Dataset of assets that have been retired or that are currently being retired from data.ct.gov. Datasets may be retired for a number of reasons, including age, factual... -
County
Assessor [Archived 05-18-2022] - Residential Assessments
Cook County of Illinois —
This data contains every residential Property Index Number (PIN) and corresponding Assessed Values from significant stages in the assessment process. This data was... -
County
Assessor [Archived 05-11-2022] - Cook County Property Assessments
Cook County of Illinois —
Every assessed value in Cook County 2010 to 2020, and appeal indicators. Each PIN has three stages of assessments each year: CCAO Mailed, CCAO Certified, and Board of... -
County
Assessor [Archived 05-11-2022] - Residential Neighborhood Boundaries
Cook County of Illinois —
Neighborhoods play an important role in residential property assessment. Single-family and residential multi-family property assessments are sensitive to neighborhood...