August 5, 2026
- Hazards and Environment
- Property and Housing
- Rates and Prices
- Utilities and Infrastructure
- Work and Income
Behind the Data
Every figure on this site carries a source and a date. This is the same claim in aggregate: when the data last landed, what moved, and what has to pass before anything is published.
A scheduled job checks the source publications on a tiered schedule, matched to how often each subject actually moves. Rates and fuel prices are republished weekly. Assessor rolls and census tables move once a year, and checking those every week would be pointless load on a public service.
Nothing lands unless it passes. Each run rebuilds every derived figure and then runs the full test suite against the fresh data. If a figure regressed, a source changed shape, or a town went missing, the run fails and the previous data stays up. Data is committed only because the checks went green.
"Changed" means the figures moved. Every pull is stamped with the date it ran, so counting that as a change would mark everything as updated every week. We compare the content itself, which is why a run can honestly report that we checked and the publishing bodies had put out nothing new.
Checked is not the same as current. This page tells you when we last asked the publishing bodies for new figures. It cannot tell you how old their figures are, and those are different things: a census table published in 2023 and a tax rate set for fiscal 2026 are both "checked today" and neither is from today. The period a figure actually covers is stated beside that figure, on the page it appears on, because that is where it means something.
We publish what we hold and who published it. We do not publish the machine addresses, query parameters or per-source schedules behind each pull: naming the publishing body is the attribution these public sources ask for, and the assembly is our own work.
Every dated series we publish and the period its figures cover, straight from each publisher's own release. "Checked" in the chrome is when we last asked; this is what the answers actually contain. A further 25 sources are living registers (facility lists, service areas, schedules) that are current as of our last check, and 5 are one-time surveys that do not update.
| Series | Figures Run Through | Publisher |
|---|---|---|
| Affordability Gap Analysis (HUD) | 2018–2022 survey window | U.S. Department of Housing and Urban Development |
| Annual Population Estimates | estimates through 2024 | U.S. Census Bureau |
| Assessed Values and Parcels | FY2027 (assessment years vary by town, FY2019–FY2027) | MassGIS, Massachusetts Bureau of Geographic Information |
| Building Permits, Town by Town | 1980–2025 | U.S. Census Bureau |
| Business Counts by ZIP | 2023 | U.S. Census Bureau |
| Census Geography Crosswalk | 2023 Gazetteer | U.S. Census Bureau |
| Census Population Counts | 2020 census | U.S. Census Bureau |
| Climate Normals | 1991–2020 normals | NOAA National Centers for Environmental Information |
| Community Resilience Estimates | 2024 | U.S. Census Bureau |
| Commutes, Education and Housing Age (Census Survey) | 2019–2023 survey window | U.S. Census Bureau |
| County Employment and Wages | 2024 | U.S. Bureau of Labor Statistics |
| County House Price Index | 2025 | Federal Housing Finance Agency |
| County Unemployment | 2026 | U.S. Bureau of Labor Statistics |
| Decennial Census Housing Counts | 2020 census | U.S. Census Bureau |
| Elevation Survey Flights | 2013–2021 flights | MassGIS, Massachusetts Bureau of Geographic Information |
| Environmental Justice Populations | 2020 | MassGIS, Massachusetts Bureau of Geographic Information |
| Fuel and Electricity Prices | 2026-05 | U.S. Bureau of Economic Analysis |
| Heating Fuels and Housing Stock (Census Survey) | 2020–2024 survey window | U.S. Census Bureau |
| Housing Cost Burden (Census Survey) | 2019–2023 survey window | U.S. Census Bureau |
| HUD Rent Standards | FY2026 | U.S. Environmental Protection Agency |
| Income and Work (Census Survey) | 2020–2024 survey window | U.S. Census Bureau |
| Income, Value and Rent Series (Census Survey) | 2009–2023 vintages | U.S. Census Bureau |
| Land Use Snapshots | 1971, 1985 and 1999 snapshots | MassGIS, Massachusetts Bureau of Geographic Information |
| Local Lender Rate Survey | 2026-08-05 | U.S. Department of Housing and Urban Development |
| Migration Flows (Census Survey) | 2018–2022 survey window | U.S. Census Bureau |
| Mortgage Rate History | 2026-07-30 | Freddie Mac |
| Natural Hazard Risk Index (County) | December 2025 release | Federal Emergency Management Agency |
| Natural Hazard Risk Index (Tract) | December 2025 release | Federal Emergency Management Agency |
| New Homes Permitted | 2025 | U.S. Census Bureau |
| Per-Pupil School Spending | FY2024 | U.S. Environmental Protection Agency |
| Reported Chemical Releases (TRI) | 2024 | U.S. Environmental Protection Agency |
| State Aid to Towns (Cherry Sheets) | FY2027 estimates | U.S. Environmental Protection Agency |
| Subsidized Housing Inventory (40B) | September 30, 2025 | Massachusetts Executive Office of Housing and Livable Communities |
| Tax Rates and Town Finances | FY2026 certifications | U.S. Environmental Protection Agency |
| The Town Records (Derived) | per component series | Multiple bodies |
| This Week's Mortgage Rate | 2026-07-30 | Freddie Mac |
| Town Boundaries | 2020 census boundaries | MassGIS, Massachusetts Bureau of Geographic Information |
| Town Land Areas | 2024 | U.S. Census Bureau |
| Traffic Counts | 2024 inventory | Massachusetts Department of Transportation |
| Walkability Index | 2021 Smart Location Database | U.S. Environmental Protection Agency |
| Water Quality Assessments | 2022 Integrated List | Massachusetts Department of Environmental Protection |
| Where People Work (Commute Census) | 2022 | U.S. Census Bureau |
| Who Moved In and Out (IRS) | 2021–2022 filing years | Internal Revenue Service |
The subjects that appear in the history below, and the bodies behind each.
Assessed values, tax rates, the housing stock, and what has sold.
Massachusetts Department of Elementary and Secondary Education · Massachusetts Department of Environmental Protection · Massachusetts Executive Office of Housing and Livable Communities · Massachusetts Historical Commission · MassGIS, Massachusetts Bureau of Geographic Information · U.S. Census Bureau · U.S. Environmental Protection Agency · U.S. Geological Survey
Newest figures cover through FY2027 (assessment years vary by town, FY2019–FY2027). 3 sources are living registers, current at our last check.
Employment, wages, commuting patterns and the local economy.
Internal Revenue Service · U.S. Bureau of Economic Analysis · U.S. Bureau of Labor Statistics · U.S. Census Bureau
Newest figures cover through 2026.
Flood mapping, wetlands, contaminated sites, dams and reported releases.
Federal Emergency Management Agency · Massachusetts Department of Conservation and Recreation · Massachusetts Department of Environmental Protection · NOAA National Centers for Environmental Information · U.S. Census Bureau · U.S. Environmental Protection Agency
Newest figures cover through December 2025 release. 8 sources are living registers, current at our last check.
Water and sewer service, gas, electricity, broadband, roads and transit.
Massachusetts Department of Environmental Protection · Massachusetts Department of Transportation · MassGIS, Massachusetts Bureau of Geographic Information · The regional transit authorities · U.S. Environmental Protection Agency · U.S. Geological Survey
Newest figures cover through 2024 inventory. 11 sources are living registers, current at our last check.
Mortgage rates, fuel prices and the national series behind local costs.
Community Preservation Coalition · Federal Housing Finance Agency · Freddie Mac · Massachusetts Executive Office of Housing and Livable Communities · MassGIS, Massachusetts Bureau of Geographic Information · U.S. Census Bureau · U.S. Department of Housing and Urban Development · U.S. Environmental Protection Agency
Newest figures cover through FY2027 estimates. 3 sources are living registers, current at our last check.
Refreshing brings the newest figures in. The archive underneath them is decades deep, because the agencies behind these series have been publishing them for decades and we hold the whole run, not just the latest reading.
Newest first, and it grows from here: this log records each run as it happens rather than reconstructing what came before it. Runs that changed nothing are listed too, because knowing we checked on a given date and the publishing bodies had put out nothing new is the point of keeping it.
August 5, 2026
Public records contain errors, and we copy them faithfully. If a figure here disagrees with the town's own records, the town is right and we want to know. The contact is on the about page.
A recent refresh date means the figures were checked recently. It is not a warranty that they are accurate, current or complete. See the terms of use.