Niagara County, New York

County seat: Lockport · Population 208,912 (2025) · 522 sq mi

Niagara County is the 18th most populous of New York's 62 counties, with 208,912 people (2025 estimate). Its county seat is Lockport. The map shows its 8 cities and towns and the 3 neighboring counties.

Map of Niagara County, New York with cities, towns and the county boundary
Niagara County, New York with its cities and towns, unincorporated communities (CDPs) and neighboring counties. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).

Niagara County facts

County seat
Lockport
Population (2025 estimate)
208,912 −1.8% since 2020
Land area
522 sq mi 41st largest of 62
Water area
617 sq mi
Population density
400 per sq mi
Established
1808
Largest city
Niagara Falls 47,255
Median household income
$69,633
Cities and towns
8 plus 8 CDPs
ZIP codes
22
Time zone
Eastern
FIPS code
36063

Cities and towns in Niagara County

Niagara County has 8 incorporated cities, towns and villages. Populations count the people living inside Niagara County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
Niagara FallsCity47,255
North TonawandaCity29,806
Lockport (county seat)City20,248
LewistonVillage2,492
YoungstownVillage1,822
MiddleportVillage1,692
WilsonVillage1,210
BarkerVillage566

Unincorporated communities (CDPs)

Census-designated places are communities without their own city government; the county provides their services.

CommunityPopulationAlso in
South Lockport9,144
Newfane3,938
Rapids1,655
Sanborn1,573
Ransomville1,564
Niagara University1,473
Gasport1,212
Olcott527

ZIP codes in Niagara County

22 ZIP codes reach into Niagara County. ZIP codes ignore county lines, so some also cover a neighboring county.

Population of Niagara County, 2020–2025

Niagara County shrank by 3,759 people (−1.8%) between April 2020 and July 2025: 4,294 more deaths than births and a net gain of 507 people from migration.

Year (July 1)Population
2020212,118
2021211,778
2022210,403
2023209,451
2024209,380
2025208,912

Neighboring counties

Printable Niagara County map

The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.

Paste this code to embed the map on your site:

Sources

Back to the New York county map with all 62 counties. Found an error? Tell us.