Parcel Chartplaces Open the free map

County · code 36063

Niagara CountyNew York

Niagara County is in western New York with its county seat in Lockport. The county was formed on March 11, 1808, from Allegany and Genesee counties.

  • Founded1808
  • County seatLockport
  • Land area522 sq mi + 617 sq mi water
  • Population212,666 2020 Census
  • Parcels mapped94,318 checked 16 October 2026
Open the free map Click any parcel in Niagara County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

OrleansErieGenesee Lockport Census outline · seat marked

Where it is

Niagara 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.

Albany CountyAllegany CountyBronx CountyBroome CountyCattaraugus CountyCayuga CountyChautauqua CountyChemung CountyChenango CountyClinton CountyColumbia CountyCortland CountyDelaware CountyDutchess CountyErie CountyEssex CountyFranklin CountyFulton CountyGenesee CountyGreene CountyHamilton CountyHerkimer CountyJefferson CountyKings CountyLewis CountyLivingston CountyMadison CountyMonroe CountyMontgomery CountyNassau CountyNew York CountyOneida CountyOnondaga CountyOntario CountyOrange CountyOrleans CountyOswego CountyOtsego CountyPutnam CountyQueens CountyRensselaer CountyRichmond CountyRockland CountySt. Lawrence CountySaratoga CountySchenectady CountySchoharie CountySchuyler CountySeneca CountySteuben CountySuffolk CountySullivan CountyTioga CountyTompkins CountyUlster CountyWarren CountyWashington CountyWayne CountyWestchester CountyWyoming CountyYates CountyNiagara County Niagara
Counties of New York · Niagara highlighted

History

Formed in 1808 from Allegany County, Genesee County, Cattaraugus County and Chautauqua County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Cattaraugus and Chautauqua counties were initially unorganized and attached to Niagara County for administrative and judicial purposes. Chautauqua was fully organized and detached in 1811, followed by Cattaraugus in 1817. Niagara County lost territory to the creation of Erie County in 1821 and 1824.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

  1. 1808
    Niagara County created Niagara created from Allegany and Genesee; Cattaraugus and Chautauqua not fully organized, both attached to Niagara for administrative and judicial purposes.
    from Alleganyfrom Geneseefrom Cattaraugusfrom Chautauqua
    · N.Y. Laws 1808, 31st sess., ch. 40, secs. 1-2/p. 266
  2. 1811
    Changed Chautauqua fully organized, detached from Niagara.
    Chautauqua
    · Doty et al, 1:360
  3. 1814
    Changed Eastern half of Cattaraugus was detached from Niagara, attached to Allegany for administrative and judicial purposes.
    CattaraugusAllegany
    · N.Y. Laws 1814, 37th sess., ch. 123/p. 146
  4. 1817
    Changed Cattaraugus fully organized, detached from Niagara.
    Cattaraugus
    · N.Y. Laws 1816, 40th sess., ch. 115, sec. 1/p. 107
  5. 1821
    Lost territory Niagara lost to creation of Erie.
    to Erie
    · N.Y. Laws 1820, 44th sess., ch. 228, sec. 1/p. 220
  6. 1824
    Lost territory Niagara lost to Erie.
    to Erie
    · N.Y. Laws 1824, 47th sess., ch. 242, sec. 6/p. 304

Land and parcels

What the maps cover in Niagara

Who publishes each layer, how good it is, and when we last checked.

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

Niagara by the Census

Population
212,666 2020 Census count
Housing units
100,156 2020 Census count
Land area
522 square miles
Water area
617 square miles · 54% of the county, including large bodies of water
People per sq mi
407 population ÷ land area

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.

Inside a city or town, permits usually come from that city rather than the county.

Permits

County government

See your own lot on these maps

Open Niagara 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.

Open the free map no sign-in Pro early access

Questions

Common questions about Niagara County

When was Niagara County founded?
Niagara County was founded in 1808, formed from Allegany County, Genesee County, Cattaraugus County and Chautauqua County.
What is the county seat of Niagara County?
The county seat of Niagara County is Lockport.
Is there an online parcel map for Niagara County?
Yes. Niagara County, NY Real Property Services, Tax Mapping (user lisamcfail = Niagara County GIS Coordinator) publishes a parcel map of 94,318 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Niagara County's boundary or name changed?
Niagara County was created in 1808 from Allegany County, Genesee County, Cattaraugus County and Chautauqua County. Since then the Atlas of Historical County Boundaries records 5 later changes, chiefly involving Cattaraugus County, Erie County and Allegany County.
Who issues building permits in Niagara County?
The county's page on building permits: Pistol Permit Office. Inside a city or town, ask that city first.
Is my lot in a flood zone?
We do not have flood maps for Niagara County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door