Maine · FIPS 23005 · County seat: Portland
Cumberland County, ME GIS & Parcel Viewer
Parcel lookups for Cumberland County start at Maine GeoLibrary Parcel Viewer. This page gives you that official link, notes on how the viewer works, and links to the counties next door.
Open the Cumberland County statewide map ↗
Opens maine.maps.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | Maine GeoLibrary Parcel Viewer |
|---|---|
| Type | Statewide map (covers all of Maine) |
| Website | maine.maps.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Portland |
| Population | 310,230 (2023 Census Bureau estimate) |
| Land area | 836 sq mi |
| FIPS code | 23005 |
About the official source
The link goes to a statewide map (Maine GeoLibrary Parcel Viewer). It shows parcels for Cumberland County along with the rest of Maine. Statewide parcel layers are usually stitched together from county files, so the newest splits or sales may show up on the county's own records first. As of our October 2026 test, anyone could open it without signing in or paying.
Finding a property on this statewide map
- Open Maine GeoLibrary Parcel Viewer in a new tab and zoom to Cumberland County (around Portland).
- Type a street address into the search box, or click directly on a parcel.
- Review the parcel attributes; field names vary by state.
- Confirm anything important with the county assessor, since the statewide layer is a compiled copy.
If an address search comes up empty, try the parcel number from a tax bill or deed instead, or click the lot on the map.
Cumberland County by the numbers
The U.S. Census Bureau estimated Cumberland County's population at 310,230 in 2023, spread over about 836 square miles of land, or roughly 371 people per square mile. That makes it the most populous of Maine's 16 counties. Another 381 square miles of water fall within its lines, according to Census mapping. Portland serves as the county seat.
Neighboring counties
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Cumberland County:
A note on accuracy
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.