My Local Guide

River Country, College Towns, and Wild Places

St. Lawrence County, New York

Explore a New York county shaped by the St. Lawrence River, Seaway, college towns, Adirondack wilderness, border communities, and North Country industry. Canton and nearby communities provide the services, food, culture, and local traditions that anchor daily life, while parks, historic sites, and scenic routes reveal a broader regional story. Whether you are planning a day trip, researching a move, or looking for useful local contacts, this guide brings the county’s places, resources, and practical information together in one starting point.

St. Lawrence County at a Glance

Population105,488 (July 1, 2025 Census estimate)
County SeatCanton
Largest MunicipalityMassena (town)
Established1802
ZIP Codes47 ZIP Codes serving the county
Total AreaApproximately 2,821.2 square miles, including water
Major RoutesUS 11 • NY 37 • NY 56 • NY 68 • NY 3 • NY 812
Area Code315 / 518 / 680 / 838
Shop - Dine - Discover

Meet Local Businesses

Support the businesses that help make our communities thrive. From family-owned shops and restaurants to trusted local services, discover businesses worth visiting throughout the county.

Greenfield County courthouse
Discover the County

St. Lawrence County

Created in 1802, St. Lawrence County is New York’s largest county by land area and stretches from the St. Lawrence River deep into Adirondack country. Canton is the county seat, while Massena, Ogdensburg, Potsdam, Gouverneur, and smaller communities serve a vast rural region. The river and Seaway shaped transportation and industry, colleges brought a strong educational presence, and forests, lakes, and rivers remain central to recreation and the county’s North Country identity.

Visitors can explore riverfront parks, art museums, university communities, state parks, waterfalls, and Adirondack trails. Ogdensburg, Massena, Potsdam, and Canton provide dining, shopping, culture, health care, and services, while the southern part of the county opens into quieter forest and lake country. International bridges, major highways, colleges, industry, agriculture, and outdoor tourism combine to make the county unusually varied across a very large geographic area.

What Shapes Us

Seaway Heritage

The St. Lawrence River, international crossings, shipping, power generation, and river communities connect the county to continental trade and border history.

College Towns

Clarkson, St. Lawrence University, SUNY Potsdam, and SUNY Canton bring education, culture, research, athletics, and year-round activity to the county.

Wild North Country

Adirondack forests, lakes, rivers, waterfalls, and state lands create extensive opportunities for paddling, hiking, fishing, camping, and winter recreation.

Local stories, shared places, and room to explore.
Google News — St. Lawrence County & Major Communities

Massena weighs school shake-up as enrollment shrinks - WWNY

Massena weighs school shake-up as enrollment shrinks  WWNY

Read the Story Oct 6, 2026 • 2 min read
Shop - Dine - Discover

Meet Local Businesses

Support the businesses that help make our communities thrive. From family-owned shops and restaurants to trusted local services, discover businesses worth visiting throughout the county.

County Resources

Everything You Need. All in One Place.

From public services and schools to health care, trails, transportation, and everyday essentials, use these verified St. Lawrence County resources to find organizations that serve residents and visitors.

Government

St. Lawrence County Government
Official county departments, public services, notices, and contacts.
Official Website

New York Local Government Portal
State links to local-government information and services.
Official Website

NY Department of State — Local Government Services
Training and technical resources for local governments and communities.
Official Website

New York Committee on Open Government
Freedom of Information Law and Open Meetings Law guidance.
Official Website

New York Property Tax Resources
Official property-tax, assessment, and exemption information.
Official Website

We’re Here To Help.

Practical answers for living in, visiting, and exploring St. Lawrence County, New York.

Helpful Information

Frequently Asked Questions.

Start with the questions people actually ask about St. Lawrence County — from signature attractions and outdoor access to local travel, weather, and community life.

Start with Frederic Remington Art Museum, Higley Flow State Park, and Frederic Remington Art Museum. Together they give you a quick feel for the St. Lawrence River, Seaway, college towns, Adirondack wilderness, border communities, and North Country industry. Build the day around one major stop, then leave time for a downtown, scenic road, or local meal instead of trying to cover the entire county at once.

Shop - Dine - Discover

Meet Local Businesses

Support the businesses that help make our communities thrive. From family-owned shops and restaurants to trusted local services, discover businesses worth visiting throughout the county.

My Local Guide

Find Something Fun

Top Picks for Every Kind of Day.

Browse local ideas for family time, food, shopping, outdoor adventures, and free ways to enjoy St. Lawrence County.

Every place has a story.Find Your Next Favorite.
County Guides

Explore More Counties

© 2026 My Local Guide. All rights reserved.