County · code 36015
Chemung CountyNew York
Chemung County is located in New York and was created on March 29, 1836, from Tioga County. The county is named after Chemung and has its seat in Elmira.
- Founded1836
- County seatElmira
- Named forChemung, New York
- Land area407 sq mi + 3.4 sq mi water
- Population84,148 2020 Census
- Parcels mapped39,404 checked 16 October 2026
Where it is
Chemung 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 1836 from Tioga County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Chemung County was created from Tioga County on March 29, 1836. On April 17, 1854, Chemung County lost territory to the creation of Schuyler County.
- 1836Chemung County created Chemung created from Tioga. · N.Y. Laws 1836, 59th sess., ch. 77, sec. 1/p. 102
- 1854Lost territory Chemung lost to creation of Schuyler. · N.Y. Laws 1854, 77th sess., ch. 386, secs. 1-4, 6/pp. 913-915
Land and parcels
What the maps cover in Chemung
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 39,404 parcels from Chemung County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 14 November 2023 · checked 16 October 2026 -
Address points Official
One point per address, 50,947 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
Chemung 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
Chemung 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 Chemung County.
See your own lot on these maps
Open Chemung 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 Chemung County
- When was Chemung County founded?
- Chemung County was founded in 1836, formed from Tioga County, and named after Chemung, New York.
- What is the county seat of Chemung County?
- The county seat of Chemung County is Elmira.
- Is there an online parcel map for Chemung County?
- Yes. Chemung County publishes a parcel map of 39,404 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Chemung County's boundary or name changed?
- Chemung County was created in 1836 from Tioga County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Schuyler County.
- Is my lot in a flood zone?
- We do not have flood maps for Chemung County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby