|Coordinates: 44°51′27″N72°54′43″W / 44.85748°N 72.912°W Coordinates: 44°51′27″N72°54′43″W / 44.85748°N 72.912°W|
|Founded||December 1, 1796|
|Named for||Benjamin Franklin|
|Shire Town||St. Albans|
|Largest city||St. Albans|
|• Total||692 sq mi (1,790 km2)|
|• Land||634 sq mi (1,640 km2)|
|• Water||58 sq mi (150 km2) 8.4%%|
|• Density||72/sq mi (28/km2)|
|Time zone||UTC−5 (Eastern)|
|• Summer (DST)||UTC−4 (EDT)|
Franklin County is a county located in the U.S. state of Vermont. As of the 2020 census, the population was 49,946.  Its county seat is the city of St. Albans.  It borders the Canadian province of Quebec. The county was created in 1792 and organized in 1796.   Franklin County is part of the Burlington metropolitan area.
Franklin County is one of several Vermont counties created from land claimed by Vermont on January 15, 1777, when Vermont declared itself to be a state distinct from New York.    The land originally was contested by Massachusetts, New Hampshire, and New York, but it remained undelineated until July 20, 1764, when King George III established the boundary between New Hampshire and New York along the west bank of the Connecticut River, north of Massachusetts and south of the parallel of 45 degrees north latitude. New York assigned the land gained to Albany County.   On March 12, 1772, Albany County was partitioned to create Charlotte County,  and this situation remained until Vermont's independence from New York and Britain. However, this did not end the contest. In 1772, land surveyors John Collins of Quebec and Thomas Valentine of New York erected survey monuments along what they took to be the 45th parallel of north latitude, intended to be the boundary between New York and Quebec. The Webster–Ashburton Treaty of 1842 said that their measurement errors stand, so the boundary between Vermont and Quebec, and between New York and Quebec, is where Collins and Valentine put the survey monuments, some of which still stand today (see Collins–Valentine line).
On September 3, 1783, as a result of the signing of the Treaty of Paris the Revolutionary War ended with Great Britain recognizing the independence of the United States. Article II of the treaty agreed on boundaries between the United States and British possessions to the north, and included Vermont within the U.S. Vermont's border with Quebec was established at 45 degrees north latitude.   In 1792, Franklin County was formed from part of Chittenden County.  However, Vermont's government continued to take the position that it was independent of both the United States and Britain, and so it remained until 1791.
The county's namesake is Benjamin Franklin. 
In 2008, the federal government declared the county a disaster area after severe storms and flooding on June 14–17. 
According to the U.S. Census Bureau, the county has an area of 692 square miles (1,790 km2), of which 634 square miles (1,640 km2) is land and 58 square miles (150 km2) (8.4%) is water. 
|U.S. Decennial Census  |
1790–1960  1900–1990 
1990–2000  2010–2018 
As of the 2010 United States Census, there were 47,746 people, 18,513 households, and 12,939 families residing in the county.  The population density was 75.3 inhabitants per square mile (29.1/km2). There were 21,588 housing units at an average density of 34.1 per square mile (13.2/km2).  Of the 18,513 households, 34.9% had children under the age of 18 living with them, 53.7% were married couples living together, 10.7% had a female householder with no husband present, 30.1% were non-families, and 22.7% of all households were made up of individuals. The average household size was 2.55 and the average family size was 2.97. The median age was 39.6 years. 
The median income for a household in the county was $53,623 and the median income for a family was $63,009. Males had a median income of $43,155 versus $36,940 for females. The per capita income for the county was $24,767. About 7.2% of families and 10.5% of the population were below the poverty line, including 13.8% of those under age 18 and 8.7% of those age 65 or over. 
In 1828, Franklin County was won by National Republican Party candidate John Quincy Adams
In 1832, the county was won by Anti-Masonic Party candidate William Wirt.
In 1836, the county was won by Democratic Party candidate Martin Van Buren
From William Henry Harrison in 1840 to Winfield Scott in 1852, the county would vote the Whig Party candidates.
From John C. Frémont in 1856 to Herbert Hoover in 1928 (barring 1912, where the county was won by Progressive Party candidate and former president Theodore Roosevelt), the Republican Party would have a 72-year winning streak in the county.
In 1932, the county was won by Democratic candidate Franklin D. Roosevelt and would be won by him in all four of his presidential runs from 1932 to 1944. During that time, Franklin County, along with Chittenden and Grand Isle Counties would become Democratic enclaves in an otherwise Republican-voting Vermont. The county would also be won by Harry S. Truman in 1948.
Dwight D. Eisenhower was able to win back Franklin County for the Republicans during the 1952 and 1956 elections.
The county would go to Democratic candidates John F. Kennedy in 1960, Lyndon B. Johnson in 1964, and Hubert H. Humphrey in 1968.
Incumbent President Richard Nixon would carry the county in 1972 as would Gerald Ford in 1976.
In 1980 and 1984, the county was won by Republican Ronald Reagan, who would become the last Republican presidential candidate to win Franklin County.
Since Michael Dukakis won the county in 1988, it has been won by Democratic candidates ever since.
The median income for a household in the county was $41,659, and the median income for a family was $46,733. Males had a median income of $32,009 versus $24,078 for females. The per capita income for the county was $17,816. About 7.00% of families and 9.00% of the population were below the poverty line, including 10.40% of those under age 18 and 10.30% of those age 65 or over.
In 2009, the county had the most dairy farms in the state, 239 out of 1,078. 
Villages are census divisions, but have no separate corporate existence from the towns they are in.
Clinton County is a county in the north-easternmost corner of the state of New York, in the United States and bordered by the Canadian province of Quebec. As of the 2020 United States Census, the population was 79,843. Its county seat is the city of Plattsburgh. The county lies just south of the border with the Canadian province of Quebec and to the west of the State of Vermont.
Windsor County is a county located in the U.S. state of Vermont. As of the 2020 census, the population was 57,753. The shire town is the town of Woodstock. The county's largest municipality is the town of Hartford.
Windham County is a county located in the U.S. state of Vermont. As of the 2020 census, the population was 45,905. The shire town is Newfane, and the largest municipality is the town of Brattleboro.
Washington County is a county located in the U.S. state of Vermont. Named after George Washington, its county seat is the city of Montpelier and the most populous municipality is the city of Barre. As of the 2020 census, the population was 59,807, making it the third-most populous county in Vermont, but the third-least populous capital county in the United States after Hughes County, South Dakota and Franklin County, Kentucky.
Rutland County is a county located in the U.S. state of Vermont. As of the 2020 census, the population was 60,572, making it the second-most populous county in Vermont. Its county seat and most populous municipality is the city of Rutland.
Orange County is a county located in the U.S. state of Vermont. As of the 2020 census, the population was 29,277. Its shire town is the town of Chelsea. Orange County was organized on February 2, 1781, as an original county within the state.
Lamoille County is a county located in the U.S. state of Vermont. As of the 2020 census, the population was 25,945, and it is the third-least populous county in Vermont. Its shire town is the town of Hyde Park, while Morristown is the county's largest town by population as well as its main commercial center. The county was created in 1835 and organized the following year.
Grand Isle County is a county in the U.S. state of Vermont. As of the 2020 census, the population was 7,293, making it Vermont's second-least populous county. Its shire town is North Hero. The county was created in 1802 and organized in 1805.
Essex County is a county located in the northeastern part of the U.S. state of Vermont. As of the 2020 census, the population was 5,920, making it the least-populous county in both Vermont and New England. Its shire town is the municipality of Guildhall. The county was created in 1792 and organized in 1800. Bordered by the Connecticut River next to New Hampshire, Essex County is south of the Canadian province of Quebec. It is the county with the lowest household-income in Vermont.
Chittenden County is the most populous county in the U.S. state of Vermont. As of the 2020 census, the population was 168,323. The county seat is Vermont's most populous municipality, the city of Burlington. The county has over a quarter of Vermont's population and more than twice the population of Vermont's second most populous county, Rutland. The county also has more than twice the population density of Vermont's second most dense county, Washington. The county is named for Vermont's first governor and one of the framers of its constitution as an independent republic and later U.S. state, Thomas Chittenden.
Caledonia County is a county located in the northeastern part of the U.S. state of Vermont. As of the 2020 census, the population was 30,233. Its shire town is the town of St. Johnsbury. The county was created in 1792 and organized in 1796. It was given the Latin name for Scotland, in honor of the many settlers who claimed ancestry there.
Bennington County is a county in the U.S. state of Vermont. As of the 2020 census, the population was 37,347. The shire towns are jointly Bennington and Manchester, and the largest municipality is Bennington. The county was created in 1778.
Addison County is a county located in the U.S. state of Vermont. As of the 2020 census, the population was 37,363. Its shire town is the town of Middlebury.
Westford is a town in Chittenden County, Vermont, United States. The population was 2,062 at the 2020 census.
Enosburgh is a town in Franklin County, Vermont, in the United States. The population was 2,810 at the 2020 census. Enosburgh includes the village of Enosburg Falls and the settlements of Bordoville, East Enosburgh, North Enosburgh, Sampsonville, West Enosburgh, and Enosburgh Center. Enosburgh was named for Roger Enos, who had been a commander of all the Vermont Forces in the American Revolution. He was also the father-in-law of Ira Allen, founder of Vermont. The spelling of Enosburgh differs from the spelling of Enosburg Falls.
Enosburg Falls is a village in the town of Enosburgh in Franklin County, Vermont, in the United States. The population was 1,356 at the 2020 census.
Highgate is a town in Franklin County, Vermont, United States. The population was 3,472 at the 2020 census. The town is on the Canada–US border and is a border town with Philipsburg, Quebec.
Richford is a town in Franklin County, Vermont, United States, located along the Canada–United States border. The population was 2,346 at the 2020 census.
Swanton is a village in the town of Swanton in Franklin County, Vermont, United States. It is sometimes called Swanton Village to distinguish it from the surrounding town of the same name. The population was 2,328 at the 2020 census. It was founded in 1888.
Swanton is a town in Franklin County, Vermont, United States. The population was 6,701 at the 2020 census. The town includes the village of Swanton.