County · code 36077
Otsego CountyNew York
Otsego County is in New York with its county seat in Cooperstown. The county was established in 1791.
- Founded1791
- County seatCooperstown
- Land area1,002 sq mi + 14 sq mi water
- Population58,524 2020 Census
- Parcels mapped39,706 checked 15 October 2026
Where it is
Otsego 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 1791 from Montgomery County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Otsego County was created from Montgomery County on February 16, 1791. Its boundaries changed multiple times: Schoharie County was created from Otsego in 1795, Delaware County in 1797, Herkimer County took land in 1816, and Delaware took more land in 1817. In 1822, Otsego gained territory back from Delaware County.
- 1791Otsego County created Otsego created from Montgomery. · N.Y. Laws 1791, 14th sess., ch. 10/p. 206
- 1795Lost territory Otsego lost to creation of Schoharie. · N.Y. Laws 1795, 18th sess., ch. 42/p. 588
- 1797Lost territory Otsego lost to creation of Delaware. · N.Y. Laws 1797, 20th sess., ch. 33/p. 39
- 1816
- 1817
- 1822Gained territory Otsego gained from Delaware. · N.Y. Laws 1822, 45th sess., ch. 210/p. 206
Land and parcels
What the maps cover in Otsego
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 39,706 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, 41,156 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
Otsego 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
Who to ask before you build, dig or sell
Official county pages only. We link to them; we do not copy them, because they change.
County government
- County government
The official website of Otsego County.
See your own lot on these maps
Open Otsego 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 Otsego County
- When was Otsego County founded?
- Otsego County was founded in 1791, formed from Montgomery County.
- What is the county seat of Otsego County?
- The county seat of Otsego County is Cooperstown.
- Is there an online parcel map for Otsego County?
- Yes. New York State Geographic Information Systems (GIS) Clearinghouse publishes a parcel map of 39,706 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Otsego County's boundary or name changed?
- Otsego County was created in 1791 from Montgomery County. Since then the Atlas of Historical County Boundaries records 5 later changes, chiefly involving Delaware County, Herkimer County and Schoharie County.
- Is my lot in a flood zone?
- We do not have flood maps for Otsego County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby