Data sources

Every number on this site traces back to a public dataset. We pull each source on its own schedule, normalize it, and show the most meaningful slices — nothing is estimated or adjusted by us. Follow the links to verify anything against the original.

Adult-use cannabis licensees

Refreshed monthly

Published by Maine Office of Cannabis Policy

The monthly licensee CSV: every adult-use license with its type, status, location, and issue dates. We count distinct license numbers.

View the original source ↗ · last pulled June 11, 2026

Residential building permits

Refreshed monthly

Published by Federal Reserve Bank of St. Louis (FRED) · original data from U.S. Census Bureau, Building Permits Survey

Two Maine series — all private housing units authorized (MEBPPRIV) and single-family units (MEBP1FH) — monthly back to 1988.

View the original source ↗ · last pulled June 11, 2026

State of Maine Housing Data Portal

Refreshed annually

Published by MaineHousing & Maine DECD (portal built by HR&A Advisors) · original data from U.S. Census Bureau (ACS), Zillow (ZHVI), Maine Judicial Branch (evictions), MaineHousing program data

21 statewide datasets: population and income, home values, rents, vacancy, eviction filings, cost burden, deed-restricted supply, and 2030 production needs.

View the original source ↗ · last pulled June 11, 2026

Environmental sites (spills, tanks, remediation)

Refreshed monthly

Published by Maine Dept. of Environmental Protection, GIS Unit

Three datasets: response spill locations investigated by DEP, registered petroleum storage tanks, and remediation sites. Locations not yet mapped by DEP are excluded by the source.

View the original source ↗ · last pulled June 11, 2026

Air quality (AQI)

Refreshed daily

Published by AirNow — U.S. EPA and partner agencies · original data from State and federal monitoring stations reporting to AirNow

Daily Air Quality Index readings by pollutant for Maine reporting areas (Portland, Bangor, Acadia, Androscoggin County).

View the original source ↗ · last pulled June 11, 2026

Labor force & unemployment estimates

Refreshed monthly

Published by Maine Dept. of Labor, Center for Workforce Research and Information · original data from U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics (LAUS) program

Statewide seasonally-adjusted estimates back to 1976, plus county, labor-market-area, and town estimates (not seasonally adjusted).

View the original source ↗ · last pulled June 11, 2026

MaineStats is an independent project and is not affiliated with any of the agencies above. If you spot a discrepancy between a chart here and its original source, the original source is right — data here may lag by up to one refresh cycle.