County · code 36029
Erie CountyNew York
Erie County is located in New York and was formed on April 2, 1821, from Niagara County. The county is named after Lake Erie and has Buffalo as its seat.
- Founded1821
- County seatBuffalo
- Named forLake Erie, North America
- Land area1,043 sq mi + 184 sq mi water
- Population954,236 2020 Census
- Parcels mapped360,010 checked 16 October 2026
Where it is
Erie 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 1821 from Niagara County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Erie was created from Niagara on April 2, 1821. The county gained additional land from Niagara on April 12, 1824.
- 1821Erie County created Erie created from Niagara. · N.Y. Laws 1820, 44th sess., ch. 228, sec. 1/p. 220
- 1824Gained territory Erie gained from Niagara. · N.Y. Laws 1824, 47th sess., ch. 242, sec. 6/p. 304
Land and parcels
What the maps cover in Erie
Who publishes each layer, how good it is, and when we last checked.
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Parcels Fallback
Lot lines and tax-map numbers for 360,010 parcels from Erie County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey. This copy is a fallback, not the county's own: use it as a guide and check the official record.
edited 3 October 2023 · checked 16 October 2026 -
Address points Official
One point per address, 535,293 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
Erie 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
Erie 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 Erie County.
See your own lot on these maps
Open Erie 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 Erie County
- When was Erie County founded?
- Erie County was founded in 1821, formed from Niagara County, and named after Lake Erie, North America.
- What is the county seat of Erie County?
- The county seat of Erie County is Buffalo.
- Is there an online parcel map for Erie County?
- Yes. Erie County publishes a parcel map of 360,010 parcels, rated fallback here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Erie County's boundary or name changed?
- Erie County was created in 1821 from Niagara County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Niagara County.
- Is my lot in a flood zone?
- We do not have flood maps for Erie County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby