County · code 36087
Rockland CountyNew York
Rockland County is a county in New York with its seat in New City. The county was formed on February 23, 1798.
- Founded1798
- County seatNew City
- Land area173 sq mi + 26 sq mi water
- Population338,329 2020 Census
- Parcels mapped92,620 checked 15 October 2026
Where it is
Rockland on the map of New York
New York has 62 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1798 from Orange County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Rockland County was created from Orange County on February 23, 1798. On March 21, 1800, Rockland County gained additional territory from Orange County.
- 1798Rockland County created Rockland created from Orange. · N.Y. Laws 1798, 21st sess., ch. 16/p. 156
- 1800Gained territory Rockland gained from Orange. · N.Y. Laws 1800, 23d sess., ch. 51/p. 493
Land and parcels
What the maps cover in Rockland
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 92,620 parcels from New York State Geographic Information Systems (GIS) Clearinghouse. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 25 September 2026 · checked 15 October 2026 -
Address points Official
One point per address, 138,514 in all from NYS Office of Information Technology Services (ITS), Geospatial Services / GIS Program Office (AGOL org 'ShareGIS NY', owner NYSGIS_GPO).
edited 25 September 2026 · checked 14 October 2026 -
Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
Rockland by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
Rockland County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of Rockland County.
See your own lot on these maps
Open Rockland County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about Rockland County
- When was Rockland County founded?
- Rockland County was founded in 1798, formed from Orange County.
- What is the county seat of Rockland County?
- The county seat of Rockland County is New City.
- Is there an online parcel map for Rockland County?
- Yes. New York State Geographic Information Systems (GIS) Clearinghouse publishes a parcel map of 92,620 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Rockland County's boundary or name changed?
- Rockland County was created in 1798 from Orange County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Orange County.
- Is my lot in a flood zone?
- We do not have flood maps for Rockland County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby