New Hampshire · FIPS 33019 · County seat: Newport
Sullivan County, NH GIS & Parcel Viewer
Looking for lot lines or a parcel number in Sullivan County, NH? The quickest route is NHDOT Parcel Mosaic Viewer, the statewide parcel map we keep on file for this county. We link straight to it and add a few tips for getting around.
Open the Sullivan County statewide map ↗
Opens experience.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | NHDOT Parcel Mosaic Viewer |
|---|---|
| Type | Statewide map (covers all of New Hampshire) |
| Website | experience.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Newport |
| Population | 43,969 (2023 Census Bureau estimate) |
| Land area | 538 sq mi |
| FIPS code | 33019 |
About the official source
Sullivan County doesn't have its own viewer in our directory, so we point you to a statewide map: NHDOT Parcel Mosaic Viewer. Zoom in on Sullivan County to see its parcels. A statewide layer can trail the county's own books by weeks or months, so treat it as a fast first look rather than the final word. As of our October 2026 test, anyone could open it without signing in or paying.
Finding a property on this statewide map
- Open the statewide map with the button above.
- Search for an address in Sullivan County, or zoom to the county on the map.
- Click a parcel to see the attributes the state layer includes.
- Write down the parcel number and use it for records searches with the Sullivan County assessor or recorder.
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.
Sullivan County by the numbers
Census Bureau figures put Sullivan County at about 43,969 people (2023 estimate) on roughly 538 square miles of land, which is about 82 residents per square mile. That makes it number 9 out of 10 New Hampshire counties by population. Its county seat is Newport.
Counties next to Sullivan County
Parcels close to the edge of Sullivan County can fall in the next county over. Neighboring counties:
- Cheshire County
- Grafton County
- Hillsborough County
- Merrimack County
- Windham County, VT
- Windsor County, VT
Maps vs. surveys
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.