New York · FIPS 36083 · County seat: Troy
Rensselaer County, NY GIS & Parcel Viewer
Use this page to reach the official county parcel map for Rensselaer County, New York. The button below opens the Rensselaer County parcel map in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Rensselaer County parcel map ↗
Opens rensselaercounty.prosgar.com in a new tab. We link out and never embed or copy parcel data.
Rensselaer County at a glance
| Official map | Rensselaer County parcel map |
|---|---|
| Type | County-run map |
| Website | rensselaercounty.prosgar.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Troy |
| Population | 159,305 (2023 Census Bureau estimate) |
| Land area | 652 sq mi |
| FIPS code | 36083 |
Where the parcel data comes from
This map is published by or for Rensselaer County itself, so it reflects the local parcel layer rather than a third-party copy. As of our October 2026 test, anyone could open it without signing in or paying.
How to use the Rensselaer County viewer
- Open the official link in a new tab.
- Accept any disclaimer, then look for a search box that takes street addresses, owners or parcel IDs.
- Zoom in and click a parcel to see its details.
- Use the map's layer controls to add aerials or other layers if they're offered.
Have a tax bill handy? The parcel or account number on it is usually the fastest way to search.
Rensselaer County by the numbers
The U.S. Census Bureau estimated Rensselaer County's population at 159,305 in 2023, spread over about 652 square miles of land, or roughly 244 people per square mile. By population it ranks 22nd of 62 counties in New York. The county seat is Troy.
Nearby parcel maps
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Rensselaer County:
- Albany County
- Columbia County (state list)
- Greene County
- Saratoga County
- Washington County (state list)
- Bennington County, VT
- Berkshire County, MA
Before you rely on the lines
Online parcel lines are drawn for tax and planning use. They can be off by several feet, so use a recorded plat or a licensed surveyor for fences, setbacks or a sale.