|— Town —|
|• Town Manager||Scott Murphy|
|• Total||41.3 sq mi (106.9 km2)|
|• Land||39.4 sq mi (102.2 km2)|
|• Water||1.8 sq mi (4.7 km2)|
|Elevation||1,565 ft (477 m)|
|• Density||56.4/sq mi (21.8/km2)|
|Time zone||Eastern (EST) (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|GNIS feature ID||1462264|
The town was chartered in 1751 by Benning Wentworth, colonial governor of New Hampshire. It was named in honor of Spencer Compton, 1st Earl of Wilmington. Wilmington is the home of Haystack Mountain Ski Area, which presently operates as a private Club.
According to the United States Census Bureau, the town has a total area of 41.3 square miles (106.9 km2), of which 39.4 square miles (102.1 km2) is land and 1.8 square miles (4.7 km2) (4.39%) is water. Wilmington is drained by the North Branch Deerfield River, as well as Meadow Brook, Rose Brook, Haystack Brook, Hall Brook, Ellis Brook, Beaver Brook, Negus Brook and Wilder Brook. It is located in the Deerfield Valley of the Green Mountains.
As of the census of 2000, there were 2,225 people, 992 households, and 597 families residing in the town. The population density was 56.4 people per square mile (21.8/km2). There were 2,232 housing units at an average density of 56.6 per square mile (21.9/km2). The racial makeup of the town was 97.80% White, 0.22% African American, 0.27% Native American, 0.58% Asian, 0.18% from other races, and 0.94% from two or more races. Hispanic or Latino of any race were 0.94% of the population.
There were 992 households out of which 26.0% had children under the age of 18 living with them, 48.6% were married couples living together, 7.8% had a female householder with no husband present, and 39.8% were non-families. 32.5% of all households were made up of individuals and 8.0% had someone living alone who was 65 years of age or older. The average household size was 2.24 and the average family size was 2.84.
In the town the population was spread out with 21.6% under the age of 18, 7.0% from 18 to 24, 26.7% from 25 to 44, 30.6% from 45 to 64, and 14.1% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 101.0 males. For every 100 females age 18 and over, there were 98.7 males.
The median income for a household in the town was $37,396, and the median income for a family was $46,786. Males had a median income of $29,511 versus $23,417 for females. The per capita income for the town was $25,171. About 7.0% of families and 9.3% of the population were below the poverty line, including 15.2% of those under age 18 and 5.6% of those age 65 or over.
A consolidation took place between Whitingham High School (WHS) and Wilmington Middle High School (WMHS) and the local school is now called Twin Valley High School (TVHS). Towards the end of 2005, a proposal was made to construct a new high school, however, voters rejected the needed bond issue.
 Vermont snowfall record
Wilmington is in the heart of the Southern Vermont snowbelt. This snowbelt lies mainly within the southern Vermont portion of the Green Mountain National Forest and includes the high elevation Southern Vermont towns of Woodford, Searsburg, Wilmington and Marlboro. Between February 24 and February 27, 2010, Wilmington received a record 54 in (1.4 m) of snow. Over 4 ft (1.2 m) of snow fell during this February 2010 blizzard. Snowfall amounts of 54 in (1.4 m) up to 67 in (1.7 m) were reported for Wilmington, West Dover and the surrounding towns. The February 2010 blizzard in Wilmington and West Dover appears to be the single storm snowfall record for anywhere in the state of Vermont in Vermont weather record keeping history. The previous single storm snowfall record was 50 in (1.3 m) between March 2–5, 1947 in Readsboro, Vermont.
 Notable people
- James William Locke, lawyer and judge
- Elswyth Thane, romance novelist
- James Manning Tyler, judge and US congressman
- Halsey (H.W.) Wilson, publisher
- "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.
- Davis, Jeremy K. Lost Ski Areas Of Southern Vermont. The History Press. 2010. Page 92.
- Brandt, Ryan. Mount Snow Magazine. Hawthorn Publications. 2010-11. Page 24.
- Ludlum, David M. The Vermont Weather Book. The Vermont Historical Society, Inc. Second Printing, 1987. Page 171.
- Town of Wilmington, Vermont
- Pettee Memorial Library
- Historical Society of Wilmington
- Living History Association
- Memorial Hall Center for the Arts
- The Mount Snow Valley Chamber of Commerce