Christ Church, built in 1817
|• Total||40.0 sq mi (103.5 km2)|
|• Land||39.9 sq mi (103.3 km2)|
|• Water||0.1 sq mi (0.2 km2)|
|Elevation||791 ft (241 m)|
|• Density||53.2/sq mi (20.5/km2)|
|Time zone||Eastern (EST) (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|GNIS feature ID||1462112|
According to the United States Census Bureau, the town has a total area of 40.0 square miles (103.5 km²), of which 39.9 square miles (103.3 km²) is land and 0.1 square mile (0.2 km²) (0.20%) is water.
As of the census of 2010, there were 2,121 people, 902 households, and 574 families residing in the town. The population density was 53.2 people per square mile (20.5/km²). There were 1,038 housing units at an average density of 26.0 per square mile (10.0/km²). The racial makeup of the town was 97.2% White, 0.5% African American, 0.0% Native American, 0.2% Asian, 0.6% from other races, and 1.5% from two or more races. Hispanic or Latino of any race were 1.1% of the population.
There were 902 households out of which 25.3% had children under the age of 18 living with them, 49.9% were husbands and wives living together, 8.3% had a female householder with no husband present, and 5.4% had a male householder with no wife present. 36.4% of all households were non-families, and 27.1% of all households were made up of individuals. The average household size was 2.35 and the average family size was 2.85.
In the town the population was spread out with 22.2% 19 years old or younger, 3.9% from 20 to 24, 23.0% from 25 to 44, 37.7% from 45 to 64, and 14.2% who were 65 years of age or older. The median age was 46.3 years. For every 100 females there were 99.9 males.
The median income for a household in the town was $57,674, and the median income for a family was $66,563. Full-time working males had a median income of $42,250 versus $31,725 for females. The per capita income for the town was $28,612. About 2.9% of families and 7.6% of the population were below the poverty line, including 12.2% of those under the age of 18 and 2.5% of those 65 and older.
- 1732 – Chartered as Gallup's Canada, Massachusetts
- 1754 – Chartered as Guilford, New Hampshire
- 1758 – Chartered as Guilford, New York
- 1760 or 1761 – First settler arrives, either Lucy Terry (1760) or Michah Rice (1761)
- 1782 – First house and barn built in Guilford burn down
- 1791 – Chartered as Guilford, Vermont
- 1791-1820 – Guilford is most populous town in Vermont
- 1816 – First Episcopal church in Vermont built in Guilford, Christ Church
- 1817 – Broad Brook House built, now houses the Guilford Country Store
- 1820 – East Guilford Cotton Mill on Bee Barn Road burns down
- 1822 – First Guilford Town Hall built on Guilford Center Road in Guilford Center, now historical museum
- 1837 – Universalist church built in Guilford Center
- 1855 – Algiers (East Guilford) schoolhouse burns down
- 1884 – Broad Brook Grange Hall #151 built in Guilford Center
- 1885 – Green River Paper Mill burns down
- 1889 – East Guilford Grist Mill, first mill built in Guilford, burns down
- 1900 – Post offices close after establishment of RFD 3
- 1934 – Barn burns down on Yeaw Road, killing two young girls
- 1948 – Guilford Recreation Club organized
- 1949 – Broad Brook Fire Control organized
- 1949 – Broad Brook Fire Control becomes Guilford Volunteer Fire Department
- 1954 – First firehouse built in Algiers on Guilford Center Road
- 1957 – Guilford Central School built, all old schoolhouses closed
- 1969 – House burns down on Johnson Pasture Drive, killing four people
- 1972 – Guilford Town Hall built on School Road
- 2005 – New firehouse built on Guilford Center Road in Algiers
- 2007 – Town constable given police cruiser, a step toward a town Police Department
- 2007 – First full-time firefighter in Guilford
- James Elliot, author and United States Representative from Vermont
- Halbert S. Greenleaf, former US Congressman from New York
- Christopher Hitchens, writer, was Olivia Wilde's babysitter for a time.
- Jonathan Hunt, former Lieutenant Governor of Vermont and early landowner in Guilford
- Charles E. Phelps, US Army brigadier general; Medal of Honor recipient; US congressman for Maryland
- John W. Phelps, Brigadier General in the American Civil War and abolitionist
- Rudolf Serkin, Austrian pianist
- Lucy Terry, African-American poet
- Royall Tyler, playwright
- Olivia Wilde Actress former star of The O.C. and current film actress, For a short time, the actress' family had a house in the town. 
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- "Profile for Guilford, Vermont". ePodunk. Retrieved 2010-05-10.
- "American FactFinder". United States Census Bureau. Retrieved 2011-05-14.
- Vincent Carretta notes that Lucy Terry, who is credited as being the first woman African-American poet, moved to Guilford in 1760, raising six children in the town, contrary to reports that one Micah Rice was the town's first settler, as Rice did not arrive in Guilford until 1761. Caretta, Vincent (2001). Vincent Caretta, ed. Lucy Terry Prince (c.1730-1821). New York: Penguin. p. 199. ISBN 9780140424300.
- "ELLIOT, James, (1775 - 1839)". Biographical Directory of the United States Congress. Retrieved October 24, 2012.
- "GREENLEAF, Halbert Stevens, (1827 - 1906)". Biographical Directory of the United StatesCongress. Retrieved May 15, 2014.
- Christopher Hitchens (23 February 2010). "Fashion Spotlight: Olivia Wilde". Elle. Retrieved 1 May 2014.
- Jennings, Isaac (1869). Memorials of a Century: Embracing a Record of Individuals and Events, Chiefly in the Early History of Bennington, Vt., and Its First Church. Gould and Lincoln. p. 323.
- "PHELPS, Charles Edward, (1833 - 1908)". Biographical Directory of the United States Congress. Retrieved October 24, 2012.
- United States Military Academy Association of Graduates, Annual Report, 1885, pages 73-86
- "Rudolf Serkin". IMDb. Retrieved October 24, 2012.
- Gerzina, Gretchen Holbrook Gerzina ; researched with Anthony (2008). Mr. and Mrs. Prince : how an extraordinary eighteenth-century family moved out of slavery and into legend (1st ed. ed.). New York: Amistad. ISBN 0060510730.
- "Royall Tyler Collection, 1753-1935". Vermont Historical Society. Retrieved October 24, 2012.
- Vilkomerson, Sara (April 11, 2007). "Wilde At Heart". New York Observer. Retrieved April 11, 2007.
- Wheatley, Phillis; Carretta, Vincent (ed.) Phylis Wheatley, Complete Writings New York: Penguin, 2001. p. 199
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