This data set includes all channels of engagement in which a service request is created.

Refer to this link to learn more about BOS:311: https://www.cityofboston.gov/311/

9/22/25 UPDATE: In October 2025, 311 service requests will begin transitioning to a new backend system; cases from the new system will populate a new and differently structured dataset. During the transition, some cases will populate in the current dataset ("311 Service Requests - 2025") and some cases will populate in the new dataset (not yet posted) depending on the type of service the case requires. The data dictionary labeled NEW SYSTEM corresponds to the dataset for the new system. The Data Transition Guide provides current information on which case types to find in which dataset as well as how to use old and new datasets together. We anticipate all cases will be transitioned to the new system by mid-2026. If you have any questions on the upcoming changes, you can contact doitbcstech@boston.gov.

Gives property, or parcel, ownership together with value information, which ensures fair assessment of Boston taxable and non-taxable property of all types and classifications. To preserve their integrity, the identifiers PID, CM_ID, GIS_ID, ZIPCODE, and MAIL_ZIPCODE all are marked with an underscore ("_") as the last character.

Year-specific documentation for the FY2008 through FY2013 files is not currently available, but the format of those files is equivalent to that described in the FY2014 documentation.

Provides metrics on overall city health based on work done across all facets of the City of Boston.

For more information about CityScore, please refer to this link: https://www.boston.gov/cityscore

Open spaces of conservation and recreation interest in Boston, Massachusetts, USA, regardless of ownership.

This dataset pulls from many different data sources to identify individual building characteristics of all buildings in Boston. It also identifies high-potential retrofit options to reduce carbon emissions in multifamily buildings, using the best available data and assumptions from building experts.

Building characteristics will require on-site verification before an owner can act on them.

Find out more about carbon targets for Boston's existing large buildings.

2020 Census data for the city of Boston, Boston neighborhoods, census tracts, block groups, and voting districts. In the 2020 Census, the U.S. Census Bureau divided Boston into 207 census tracts (~4,000 residents) made up of 581 smaller block groups. The Boston Planning and Development Agency uses the 2020 tracts to approximate Boston neighborhoods. The 2020 Census Redistricting data also identify Boston’s voting districts.

For analysis of Boston’s 2020 Census data including graphs and maps by the BPDA Research Division and Office of Digital Cartography and GIS, see 2020 Census Research Publications

For a complete official data dictionary, please go to 2020 Census State Redistricting Data (Public Law 94-171) Summary File, Chapter 6. Data Dictionary. 2020 Census State Redistricting Data (Public Law 94-171) Summary File

2020 Census Tracts In Boston

2020 Census Block Groups In Boston

Boston Neighborhood Boundaries Approximated By 2020 Census Tracts

Boston Voting District Boundaries

City of Boston sidewalk inventory data. Completed by the Boston Public Works Department (PWD) in 2014.

Each year, the City of Boston publishes payroll data for employees. This dataset contains employee names, job details, and earnings information including base salary, overtime, and total compensation for employees of the City.

See the "Payroll Categories" document below for an explanation of what types of earnings are included in each category.

Monthly utility data for all City of Boston accounts. This data comes from Boston’s Enterprise Energy Management System. This software tool serves as the system of record for all municipal utility expenditures and energy/water use.

Demographic Data for Boston’s Neighborhoods, 1950-2019

Boston is a city defined by the unique character of its many neighborhoods. The historical tables created by the BPDA Research Division from U.S. Census Decennial data describe demographic changes in Boston’s neighborhoods from 1950 through 2010 using consistent tract-based geographies. For more analysis of these data, please see Historical Trends in Boston's Neighborhoods. The most recent available neighborhood demographic data come from the 5-year American Community Survey (ACS). The ACS tables also present demographic data for Census-tract approximations of Boston’s neighborhoods. For pdf versions of the data presented here plus earlier versions of the analysis, please see Boston in Context.

Boston Public Schools (BPS) schools for the school year 2018-2019. Updated September 2018.

This data, maintained by the Mayor’s Office of Housing (MOH), is an inventory of all income-restricted units in the city. This data includes public housing owned by the Boston Housing Authority (BHA), privately- owned housing built with funding from DND and/or on land that was formerly City-owned, and privately-owned housing built without any City subsidy, e.g., created using Low-Income Housing Tax Credits (LIHTC) or as part of the Inclusionary Development Policy (IDP). Information is gathered from a variety of sources, including the City's IDP list, permitting and completion data from the Inspectional Services Department (ISD), newspaper advertisements for affordable units, Community Economic Development Assistance Corporation’s (CEDAC) Expiring Use list, and project lists from the BHA, the Massachusetts Department of Housing and Community Development (DHCD), MassHousing, and the U.S. Department of Housing and Urban Development (HUD), among others. The data is meant to be as exhaustive and up-to-date as possible, but since many units are not required to report data to the City of Boston, MOH is constantly working to verify and update it. See the data dictionary for more information on the structure of the data and important notes. The database only includes units that have a deed-restriction. It does not include tenant-based (also known as mobile) vouchers, which subsidize rent, but move with the tenant and are not attached to a particular unit. There are over 22,000 tenant-based vouchers in the city of Boston which provide additional affordability to low- and moderate-income households not accounted for here. The Income-Restricted Housing report can be directly accessed here:
https://www.boston.gov/sites/default/files/file/2023/04/Income%20Restricted%20Housing%202022_0.pdf

Learn more about income-restricted housing (as well as other types of affordable housing) here: https://www.boston.gov/affordable-housing-boston#income-restricted

The Checkbook Explorer web application provides current financial information about the City of Boston's expenditures, allowing users to explore how City funds are spent.

Data is updated regularly, though the timing may vary based on internal review and approval processes. This data is published, and certain information is withheld from publishing, in accordance with the 2014 Executive Order of Mayor Martin J. Walsh, "_An Order Relative to Open Data and Protected Data Sharing_." Personal information is excluded to protect individual privacy. The Checkbook Explorer does not contain payroll information, which is available in the Employee Earnings Report (https://data.boston.gov/dataset/employee-earnings-report), or data from independent city agencies. Data from July 2011 (FY 2012) to present is available.

Traffic-related data collected by the Boston Transportation Department, as well as other City departments and State agencies. Various types of counts: Turning Movement Counts, Automated Traffic Recordings, Pedestrian Counts, Delay Studies, and Gap Studies.

~_Turning Movement Counts (TMC)_ present the number of motor vehicles, pedestrians, and cyclists passing through the particular intersection. Specific movements and crossings are recorded for all street approaches involved with the intersection. This data is used in traffic signal retiming programs and for signal requests. Counts are typically conducted for 2-, 4-, 11-, and 12-Hr periods.

~_Automated Traffic Recordings (ATR)_ record the volume of motor vehicles traveling along a particular road, measures of travel speeds, and approximations of the class of the vehicles (motorcycle, 2-axle, large box truck, bus, etc). This type of count is conducted only along a street link/corridor, to gather data between two intersections or points of interest. This data is used in travel studies, as well as to review concerns about street use, speeding, and capacity. Counts are typically conducted for 12- & 24-Hr periods.

~_Pedestrian Counts (PED)_ record the volume of individual persons crossing a given street, whether at an existing intersection or a mid-block crossing. This data is used to review concerns about crossing safety, as well as for access analysis for points of interest. Counts are typically conducted for 2-, 4-, 11-, and 12-Hr periods.

~_Delay Studies (DEL)_ measure the delay experienced by motor vehicles due to the effects of congestion. Counts are typically conducted for a 1-Hr period at a given intersection or point of intersecting vehicular traffic.

~_Gap Studies (GAP)_ record the number of gaps which are typically present between groups of vehicles traveling through an intersection or past a point on a street. This data is used to assess opportunities for pedestrians to cross the street and for analyses on vehicular “platooning”. Counts are typically conducted for a specific 1-Hr period at a single point of crossing.

Amended in 2021, the Building Emissions Reduction and Disclosure Ordinance (BERDO) aims to reduce air pollution and greenhouse gas emissions generated by large buildings in Boston. BERDO gives the City of Boston authority to set emissions standards for large existing buildings, including residential buildings with 15 or more units and non-residential buildings that are 20,000 square feet or larger.

The emissions standards set by BERDO decrease over time, with all buildings expected to reach net-zero emissions by 2050. BERDO encourages retrofits, energy efficiency improvements, fuel switching, and renewable energy generation in local buildings.

BERDO applies to the following buildings:

• Residential buildings that have 15 or more units.
• Non-residential buildings that are 20,000 square feet or larger.
• Any tax parcel with multiple buildings that sum to at least 20,000 square feet or 15 units.

Every year by May 15, covered building owners need to report the total energy and water use of their buildings from the previous calendar year. The City of Boston is required to annually disclose BERDO reported data from the previous year.

Please note:

• Reported data from 2021 and earlier was reported under the old Building Energy Reporting and Disclosure Ordinance, which applied to buildings 35,000 square feet and above or 25 units or above. The prior iteration of BERDO required energy and water reporting, but did not include emissions reduction requirements.
• Usage figures reported in these datasets are provided by building owners and have not been independently verified by the City of Boston.
• This dataset will be updated periodically with usage figures which are submitted or revised after the official reporting deadline.
• The compliance map reflects buildings' status as of the reporting deadline in the most recent year, and late submissions will remain marked as out of compliance even if usage figures have subsequently been added to the dataset.
• Reports for buildings which show "Not Available" values in one or more fields are pending revision and will be updated when additional data becomes available.

Blue Bikes (formerly Hubway) is jointly owned and managed by the municipalities of Boston, Arlington, Brookline, Cambridge, Chelsea, Everett, Malden, Medford, Newton, Revere, Salem, Somerville, and Watertown. This external website provides datasets on Blue Bikes usage.

It includes:

• Comprehensive set of trip histories which is updated monthly
• Real time system data, published in open General Bikeshare Feed Specification (GBFS) format - a format recommended by the North American Bike Share Association (NABSA).

This data is provided according to the Blue Bikes Data License Agreement.

This dataset represents the annual greenhouse gas emissions produced by the City of Boston from 2005 to 2021. The annual inventory is based on a combination of direct data and estimates for data that cannot be obtained directly. Data sources vary, and include City records, utility company reports, and information from state and federal agencies. Reporting is separated into community-wide and local government operations inventories. Because the data for these inventories is collected using separate protocols on separate timescales, the Local Government Operations Inventory should be considered to be overlapping, but not completely contained within the Citywide Inventory.

You can view the inventory report on the City's main website.

Note: We reviewed our community methodology and updated emissions data across the 2005-2021 period accordingly. Please contact environment@boston.gov if you would like to access past datasets or discuss the methodology.

The FIO program encompasses a wide range of interactions between the Boston Police Department (BPD) and private individuals. By releasing the records of these interactions, BPD hopes to add transparency to the execution of the program while still protecting the privacy of the individuals involved. These records are now sourced from three different record management systems titled: (OLD RMS) (NEW RMS) and (MARK43). The differences between the resulting files are described below.

About the FIO Records (Mark43) Files (Sept 29 2023 - Dec 31 2024)

These records are compiled from the BPD’s new Records Management System (RMS) on the BPD's FIO program. MARK43 went live September 29, 2019 and the FIO information has been structured into two separate tables. These tables are the same titles as (NEW RMS) but include new or different data points as retrieved from MARK43.

• FieldContact, which lists each contact between BPD and one or more individuals
• FieldContact_Name, which lists each individual involved in these contacts.

A FIO Data Key has also been created and posted to help distinguish the data categories (Data Key (Mark43)).

Lastly, FIOs are maintained in a live database and information related to each individual may change overtime. The data provided here should be considered a static representation of the Field Interaction and/or Observation that occurred in 2019.

NULL indicates no entry was made for an optional field.

About the FIO Records 2015 (New RMS) and 2016, 2017, 2018, 2019, and 2020 (Jan 1 - Sept 29 2020) Files

These records are compiled from the BPD’s new Records Management System (RMS) on the BPD's FIO program. The new RMS, which went live in June, 2015, structures the FIO information into two separate tables:

• FieldContact, which lists each contact between BPD and one or more individuals
• FieldContact_Name, which lists each individual involved in these contacts

While these two tables align on the field contact number (fc_num) column, it is not methodologically correct to join the two datasets for the purpose of generating aggregate statistics on columns from the FieldContact table. Doing so would lead to incorrect estimates stemming from contacts with multiple individuals. As noted in the Data Key (New RMS) file, several of the columns in the FieldContact table apply to the contact as a whole, but may not necessarily apply to each individual involved in the contact. These include:

• frisked
• searchperson
• summonsissued
• circumstances
• basis
• contact_reason

For example, the frisked column contains a value of Y if any of the individuals involved in a contact were frisked, but it would be inaccurate to assume that all individuals were frisked during that contact. As such, extrapolating from the frisked column for a contact to each individual and then summing across them would give an artificially high estimate of the number of people frisked in total. Likewise, the summonsissued column indicates when someone involved in a contact was issued a summons, but this does not imply that everyone involved in a contact was issued a summons.

For a detailed listing of columns in each table, see both tables of the Data Key (New RMS) file below.

About the FIO Records 2011 - 2015 (Old RMS) File

These records are sourced from BPD's older RMS, which was retired in June, 2015. This system (which stored all records in a single table, rather than the two tables in the newer system) captures similar information to the new RMS, but users should note that the fields are not identical and exercise care when comparing or combining records from each system.

Additional Notes

• The data provided is FIO information entered into the new system from June, 2015 through December, 2016, which includes some interactions which occurred before June, 2015 which were entered after the transition from the old system. For comprehensive analyses of interactions prior to the introduction of the new RMS, users will need to include data on interactions prior to June, 2015 from the 2015 (New RMS) file.
• These files are extracted from live databases which may have records added or updated at any time. As such, the number and content of records shared here may differ slightly from versions used to produce analyses such as those linked below, due to subsequent revisions to the underlying database records.
• A contact can consist of an observation of a vehicle, without direct contact with a person. This would create a record where no person-level details are recorded.

For more information on the FIO Program, please visit:

Boston Police Commissioner Announces Field Interrogation and Observation (FIO) Study Results

Commissioner Evans Continues Efforts to Increase Transparency and Accountability of Policing Activities to the Public

Boston Police Department Releases Latest Field Interrogation Observation Data