|Windsor County, Vermont|
Windsor County courthouse in Woodstock
Location in the U.S. state of Vermont
Vermont's location in the U.S.
|• Total||977 sq mi (2,530 km2)|
|• Land||969 sq mi (2,510 km2)|
|• Water||7.4 sq mi (19 km2), 0.8%|
|• ( 2016)||55,496|
|• Density||57.8/sq mi (22.3/km2)|
|Time zone||Eastern: UTC−5/ −4|
Windsor County is a county located in the U.S. state of Vermont. As of the 2010 census, the population was 56,670.  The shire town ( county seat) is the municipality of Woodstock.  The county's largest municipality is Hartford.
Windsor County is notable for being the birthplace (1805) of the founder of the Church of Jesus Christ of Latter-day Saints, Joseph Smith, Jr.
According to the U.S. Census Bureau, the county has a total area of 977 square miles (2,530 km2), of which 969 square miles (2,510 km2) is land and 7.4 square miles (19 km2) (0.8%) is water.  It is the largest county by area in Vermont.
- Orange County - north
- Grafton County, New Hampshire - northeast
- Sullivan County, New Hampshire - east
- Windham County - south
- Bennington County - southwest
- Rutland County - west
- Addison County - northwest
- Green Mountain National Forest (part)
- Marsh-Billings-Rockefeller National Historical Park
- White Rocks National Recreation Area (part)
|U.S. Decennial Census
1790–1960  1900–1990 
1990–2000  2010–2016 
As of the 2000 census,  there were 57,418 people, 24,162 households, and 15,729 families residing in the county. The population density was 59 people per square mile (23/km²). There were 31,621 housing units at an average density of 33 per square mile (13/km²). The racial makeup of the county was 97.72% White, 0.33% Black or African American, 0.23% Native American, 0.63% Asian, 0.03% Pacific Islander, 0.15% from other races, and 0.91% from two or more races. 0.82% of the population were Hispanic or Latino of any race. 20.1% were of English, 12.9% Irish, 10.9% American, 9.9% French, 7.7% German, 6.7% French Canadian and 5.5% Italian ancestry according. 96.4% spoke English and 1.5% French as their first language.
There were 24,162 households out of which 29.20% had children under the age of 18 living with them, 52.70% were married couples living together, 9.00% had a female householder with no husband present, and 34.90% were non-families. 28.10% of all households were made up of individuals and 11.10% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 2.86. In the county, the population was spread out with 23.30% under the age of 18, 5.90% from 18 to 24, 27.30% from 25 to 44, 27.60% from 45 to 64, and 15.80% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 94.80 males. For every 100 females age 18 and over, there were 92.10 males.
The median income for a household in the county was $40,688, and the median income for a family was $59,002. Males had a median income of $42,648 versus $25,696 for females. The per capita income for the county was $22,369. About 3.20% of families and 5.70% of the population were below the poverty line, including 7.50% of those under age 18 and 7.60% of those age 65 or over.
In 2007, the census department estimated that Windsor had the oldest average age in the state, 44.7. This compares with the actual census in 2000 of 41.3 years. 
As of the 2010 United States Census, there were 56,670 people, 24,753 households, and 15,420 families residing in the county.  The population density was 58.5 inhabitants per square mile (22.6/km2). There were 34,118 housing units at an average density of 35.2 per square mile (13.6/km2).  The racial makeup of the county was 96.3% white, 0.9% Asian, 0.6% black or African American, 0.3% American Indian, 0.2% from other races, and 1.7% from two or more races. Those of Hispanic or Latino origin made up 1.2% of the population. 
Of the 24,753 households, 25.9% had children under the age of 18 living with them, 49.1% were married couples living together, 9.0% had a female householder with no husband present, 37.7% were non-families, and 30.0% of all households were made up of individuals. The average household size was 2.25 and the average family size was 2.77. The median age was 45.8 years. 
The median income for a household in the county was $50,893 and the median income for a family was $63,387. Males had a median income of $44,610 versus $34,150 for females. The per capita income for the county was $29,053. About 5.6% of families and 9.7% of the population were below the poverty line, including 12.5% of those under age 18 and 7.6% of those age 65 or over. 
From John C. Frémont in 1856 to Richard Nixon in 1960 (barring 1912, when the county was won by Progressive Party candidate and former president Theodore Roosevelt), the Republican Party would have a 104 year winning streak in the county.
In 1964, Windsor County was won by Democratic Party incumbent President Lyndon B. Johnson, who became not only the first Democratic presidential candidate to win the county, but the first to win the state of Vermont entirely.
Following the Democrats victory in 1964, the county went back to voting for Republican candidates for another 20 year winning streak starting with Richard Nixon in 1968 and ending with George H. W. Bush in 1988, who became the last Republican presidential candidate to win the county.
Villages are census divisions, but have no separate corporate existence from the surrounding towns.
- List of counties in Vermont
- List of towns in Vermont
- National Register of Historic Places listings in Windsor County, Vermont
- USS Windsor (APA-55), an attack transport named for Windsor County
- "State & County QuickFacts". United States Census Bureau. Retrieved December 30, 2013.
- "Find a County". National Association of Counties. Retrieved 2011-06-07.
- "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. Retrieved June 29, 2015.
- "Population and Housing Unit Estimates". Retrieved June 9, 2017.
- "U.S. Decennial Census". United States Census Bureau. Retrieved June 29, 2015.
- "Historical Census Browser". University of Virginia Library. Retrieved June 29, 2015.
- Forstall, Richard L., ed. (March 27, 1995). "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved June 29, 2015.
- "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. April 2, 2001. Retrieved June 29, 2015.
- "American FactFinder". United States Census Bureau. Retrieved 2011-05-14.
- Sutkowski, Matt (August 7, 2008). Census: State older, a little more diverse. Burlington Free Press.
- "DP-1 Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data". United States Census Bureau. Retrieved 2016-01-20.
- "Population, Housing Units, Area, and Density: 2010 - County". United States Census Bureau. Retrieved 2016-01-20.
- "DP03 SELECTED ECONOMIC CHARACTERISTICS – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Retrieved 2016-01-20.
- Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved 2018-03-26.
- "Funds bypass worst roads". Burlington, Vermont: Burlington Free Press. 25 September 2009. pp. 1A.
|last1=in Authors list ( help)
- Shinn, Peggy (January 18, 2009). Not so fast (or else) on these Vermont highways. Boston Globe.