| Official Name: | Jay, Vermont |
| Settlement Type: | Town |
| Mapsize: | 250px |
| Image Map1: | Map of USA VT.svg |
| Mapsize1: | 195px |
| Map Caption1: | Location of Vermont with the U.S.A. |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Vermont |
| Subdivision Type2: | County |
| Subdivision Name2: | Orleans |
| Established Title: | Chartered |
| Established Date: | November 7, 1792 |
| Established Title2: | Organized |
| Established Date2: | March 29, 1828 |
| Unit Pref: | Imperial |
| Area Total Km2: | 88.0 |
| Area Land Km2: | 87.9 |
| Area Water Km2: | 0.1 |
| Area Total Sq Mi: | 34.0 |
| Area Land Sq Mi: | 33.9 |
| Area Water Sq Mi: | 0.1 |
| Population As Of: | 2020 |
| Population Total: | 551 |
| Population Density Km2: | 6.3 |
| Population Blank1 Title: | Households |
| Population Blank1: | 261 |
| Population Blank2 Title: | Families |
| Population Blank2: | 163 |
| Timezone: | EST |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 44.965°N -72.4597°W |
| Elevation M: | 469 |
| Elevation Ft: | 922 |
| Postal Code Type: | ZIP code |
| Postal Code: | 05859 |
| Area Code: | 802 |
| Blank Name: | FIPS code |
| Blank Info: | 50-36325[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1462127[2] |
Jay is one of the northernmost towns in Orleans County, Vermont, United States, located on the Canada–US border. The population was 551 at the 2020 census.[3] Jay is named for John Jay, one of the Founding Fathers of the United States.[4] The US Census Bureau estimated that the town's population had increased by 13.1% between 2000 and 2005, the seventh largest increase in the state.[5] Jay is also home to the Jay Challenge, a three-part stage-race, typically held in July.
On November 10, 1943, a Royal Canadian Air Force training plane crashed into the west side of the mountain near the top during a blinding snowfall killing one crew member.[6]
According to the United States Census Bureau, the town has a total area of 34mi2, of which 33.9mi2 is land and 0.04mi2 (0.12%) is water.
The highest point in town is North Jay Peak at above sea level. Despite their containing the name "Jay", other peaks with this name lie mostly in adjacent Westfield,[7] including Jay Peak itself and Jay Peak Resort.
The local Jay Branch Brook flows into the Missisquoi River.[8]
As of the census of 2010, there were 595 people, 276 households, and 215 families residing in the town. The population density was 15.4 people per square mile (5.9/km2). There were 685 housing units at an average density of 20.2 per square mile (7.8/km2). The racial makeup of the town was 96.9% White, 0.8% Native American, 0.6% Asian, and 1.7% from two or more races. Hispanic or Latino of any race were 0.6% of the population.
There were 276 households, out of which 43.0% had children under the age of 18 living with them, 63.7% were married couples living together, 9.9% had a female householder living alone, and 26.3% were non-families. 25.6% of all households were made up of individuals. The average household size was 2.34 and the average family size was 2.80.
In the town, the population was spread out, with 22.5% under the age of 18, 3.8% from 20 to 24, 28.9% from 25 to 44, 32.3% from 45 to 64, and 12.5% who were 65 years of age or older. The median age was 41.3 years. For every 100 females, there were 104.8 males. For every 100 females, there were 109 males.
The median income for a household in the town was $43,958, and the median income for a family was $48,594. The per capita income for the town was $20,058. About 7.4% of families and 12.2% of the population were below the poverty line, including 14.0% of those under age 18 and 10.4% of those age 65 or over.