[3] The county was established in 1813 and is named in honor of General Joseph Warren, an American Revolutionary War hero of the Battle of Bunker Hill.

[7] In 1963, the courthouse in Lake George village was closed and operations moved several miles south to its present-day location at the Warren County Municipal Center main campus in Queensbury.

[10] Warren County is situated in the eastern portion of New York State in the Adirondack Mountains.

[12] In the winter, bouts of cold, dry air arrive from Canada, and interior sections of North America.

[12] In the summer, the Gulf Stream can bring days of hot, moist, humid air to the county.

[12] Extratropical storms often affect the county; in the winter, Nor'easters bring heavy snow and rain, and sometimes high wind.

In the summer and fall, back door cold fronts move in from the north and bring thunderstorms, sometimes severe.

Currently Republicans constitute 51% of registered voters in Warren County, while Democrats account for 23%.

In 2006 Republican John E. Sweeney was unseated in the district by Kirsten Gillibrand as Member of Congress.

[16] In 2009 Congresswoman Kirsten Gillibrand was selected by Governor David Paterson to replace Hillary Clinton as New York's junior Senator.

[17] This was only the second time since 1964 that Warren County had voted for the Democratic nominee, the other being 1996, when Bill Clinton won with a plurality.

In 2016, Donald Trump flipped the county back to the Republicans, with an 8.5 percent margin of victory over Democratic nominee Hillary Clinton.

[28] Norman Jekyll and David Sheridan introduced the medical device industry to the Glens Falls area.

One of the primary manufacturers is AngioDynamics Inc., which is located in Queensbury, and is a producer of medical devices used in minimally invasive, image-guided procedures to treat peripheral vascular disease.

The trolleys go from Bolton Landing (four times a day) and usually turn around just north of Hearthstone Point Campground on Route 9N.

[40] Only New York State Route 9N traverses the Lake Luzerne region of Warren County.

[41] There is New York State Route 149, a 32 miles (51 km) long road that traverses Warren and nearby Washington counties.

There is also New York State Route 254, a 6 miles (9.7 km) road in southern part of the town and enters Washington County as well.

[41] The Fort Edward Amtrak station is located 6 miles (10 km) southeast of Glens Falls.

[38] The Whitehall Amtrak station is located 23 miles (37 km) northeast of Glens Falls and is serviced by the Adirondack route.

In July, it holds an annual Chamber Music Festival which is open for public viewing.

[45] In Warren County, New York on Lake George at Bolton Landing, Golden Heart Farm art colony the summer residence of Thomas and Wilhelmina Weber Furlong of the Art Students League of New York opened in the summer of 1921.

The historically important art colony and artists in residence program were at the center of the American modernist movement as important artists like David Smith, John Graham, and Dorothy Dehner from Manhattan traveled to Warren County to escape the city and study with the couple.

[46] A New York State historic marker was placed for the Warren County Bicentennial honoring Weber Furlong On July 23, 2013, at City Hall in Glens Falls.

These include Prospect Mountain just outside town, Steel Pier along Beach Road which serves several tour boats.

There are several campgrounds around the region including Hearthstone Point on Route 9N and Lake George Battleground south of the village.

[51] All island campgrounds and land-locked grounds are maintained by the New York Department of Environmental Conservation.

[51] One of the premiere historic sites in Warren County is the Fredella, Joseph J., House and Garage, which was constructed in 1900, and is significant for its architectural detail.