Alexandria Bay is a village in Jefferson County, New York, United States, within the town of Alexandria. It is located in the Thousand Islands region of northern New York. The population of the village was 1,078 at the 2010 United States Census. It lies near the Thousand Islands Border Crossing of Canada and the United States.
According to the United States Census Bureau, the village has a total area of 1.53 square miles (3.95 km), of which 0.76 square miles (1.98 km) are land and 0.76 square miles (1.97 km), or 49.77%, are water. The village is located on the south bank of the Saint Lawrence River near the U.S. and Canada international border. Keewaydin State Park is southwest of the village.
New York State Route 12 and New York State Route 26 intersect at the only stoplight in the village. NY-12 leads northeast (downriver) 36 miles (58 km) to Ogdensburg and southwest 11 miles (18 km) to Clayton. NY-26 has its northern terminus at Alexandria Bay and leads southeast 11 miles (18 km) to Theresa. Interstate 81 intersects NY-12 4 miles (6.4 km) southwest of Alexandria Bay, leading south 25 miles (40 km) to Watertown and 94 miles (151 km) to Syracuse, and north to the Thousand Islands Bridge into Canada.
As of the census of 2000, there were 1,088 people, 482 households, and 270 families residing in the village. The population density was 1,473.9 people per square mile (567.7/km²). There were 624 housing units at an average density of 845.3 per square mile (325.6/km²). The racial makeup of the village was 99.08% White, 0.37% Hispanic or Latino of any race, 0.09% African American, 0.09% Native American, and 0.74% from two or more races.
There were 482 households out of which 24.7% had children under the age of 18 living with them, 38.4% were married couples living together, 14.9% had a female householder with no husband present, and 43.8% were non-families. 38.6% of all households were made up of individuals and 15.8% had someone living alone who was 65 years of age or older. The average household size was 2.12 and the average family size was 2.81.
In the village, the population was spread out with 20.3% under the age of 18, 5.3% from 18 to 24, 27.7% from 25 to 44, 23.4% from 45 to 64, and 23.3% who were 65 years of age or older. The median age was 43 years. For every 100 females, there were 80.7 males. For every 100 females age 18 and over, there were 79.9 males.
The median income for a household in the village was $29,338, and the median income for a family was $36,979. Males had a median income of $31,250 versus $21,429 for females. The per capita income for the village was $16,875. About 11.0% of families and 13.5% of the population were below the poverty line, including 16.3% of those under age 18 and 18.7% of those age 65 or over.
According to the 2008-2012 American Community Survey, the total population of Alexandria Bay was 1,999 and 95.5% white. 12.6% of the population over 25 does not have a high school or equivalent degree. Median household income, in 2012 inflation adjusted dollars, was $37,303.