ESRI point feature class representing City of Somerville, Massachusetts polling places for the for the voter precincts based on the 2020 Census. Last updated September 18, 2023.

The annual bike and pedestrian count is a volunteer data collection effort each fall that helps the City understand where and how many people are biking and walking in Somerville, and how those numbers are changing over time. This program has been taking place each year since 2010.

Counts are collected Tuesday, Wednesday, or Thursday for one hour in the morning and evening using a “screen line” method, whereby cyclists and pedestrians are counted as they pass by an imaginary line across the street and sidewalks. Morning count sessions begin between 7:15 and 7:45 am, and evening count sessions begin between 4:45 and 5:15 pm. Counts are collected for four movements at each location: two screen lines, counting cyclists and pedestrians traveling in both directions. See an example location below.

Bike counts capture the number of people riding bicycles, so an adult and child riding on the same bike would be counted as two counts even though it is only one bike. Pedestrian counts capture people walking or jogging, people using a wheelchair or assistive device, children in strollers, and people using other micro-mobility devices, such as skateboards, scooters, or roller skates.

While the City and its amazing volunteers do their best to collect accurate and complete data each year and the City does quality control to catch clear errors, it is not possible to ensure 100% accuracy of the data and not all locations have been counted every year of the program. There are also several external factors impacting counts that are not consistent year-to-year, such as nearby construction and weather. For these reasons, the counts are intended to be used to observe high-level trends across the city and at count locations, and not to extrapolate that biking and walking in Somerville has changed by a specific percentage or number.

We invite you to use the data to conduct your own analyses. Data shared here are summed at the location level for each year. If you would like to request more granular data at the movement level, please send your request to transportation@somervillema.gov.

ESRI polygon feature class representing City of Somerville, Massachusetts fire response districts.

ESRI point feature class representing City of Somerville, Massachusetts police station locations.

The annual bike and pedestrian count is a volunteer data collection effort each fall that helps the City understand where and how many people are biking and walking in Somerville, and how those numbers are changing over time. This program has been taking place each year since 2010.

Counts are collected Tuesday, Wednesday, or Thursday for one hour in the morning and evening using a “screen line” method, whereby cyclists and pedestrians are counted as they pass by an imaginary line across the street and sidewalks. Morning count sessions begin between 7:15 and 7:45 am, and evening count sessions begin between 4:45 and 5:15 pm. Counts are collected for four movements at each location: two screen lines, counting cyclists and pedestrians traveling in both directions. See an example location below.

Bike counts capture the number of people riding bicycles, so an adult and child riding on the same bike would be counted as two counts even though it is only one bike. Pedestrian counts capture people walking or jogging, people using a wheelchair or assistive device, children in strollers, and people using other micro-mobility devices, such as skateboards, scooters, or roller skates.

While the City and its amazing volunteers do their best to collect accurate and complete data each year and the City does quality control to catch clear errors, it is not possible to ensure 100% accuracy of the data and not all locations have been counted every year of the program. There are also several external factors impacting counts that are not consistent year-to-year, such as nearby construction and weather. For these reasons, the counts are intended to be used to observe high-level trends across the city and at count locations, and not to extrapolate that biking and walking in Somerville has changed by a specific percentage or number.

We invite you to use the data to conduct your own analyses. Data shared here are summed at the location level for each year. If you would like to request more granular data at the movement level, please send your request to transportation@somervillema.gov.

Parking permits issued by the City of Somerville Parking Department between January 1, 2017 and November 30, 2020. Each row represents a unique permit issued. Medical care permits have been removed from this dataset.

Please note that this dataset may contain errors due to manual data input.

If you have any suggestions about this dataset, please contact somerstat@somervillema.gov.

Additional permit information can be found at https://www.somervillema.gov/departments/parking-department

This is a draft dataset for the City of Somerville Infectious Illness Dashboard. This dataset combines multiple public data sources concerning COVID and flu in Massachusetts and, where possible, in the Somerville area specifically. Data sources include the Center for Disease Control, the Massachusetts Department of Public Health, and the Massachusetts Water Resources Authority.