Avon-by-the-Sea (often called simply Avon; pronunciation: /ævɒn/, AH-von[17][18]) is a borough in Monmouth County, in the U.S. state of New Jersey.

[21] Avon-by-the-Sea was incorporated as a borough by an act of the New Jersey Legislature on March 23, 1900, from portions of Neptune City.

[27][28][29] Avon-by-the-Sea is located on the Atlantic Ocean and is surrounded by two other bodies of water; the south side of Avon is located on the Shark River and the north end of Avon rests on Sylvan Lake.

[30] The 2010 United States census counted 1,901 people, 901 households, and 477 families in the borough.

Of all households, 40.8% were made up of individuals and 17.8% had someone living alone who was 65 years of age or older.

[19] The Census Bureau's 2006–2010 American Community Survey showed that (in 2010 inflation-adjusted dollars) median household income was $83,333 (with a margin of error of +/− $10,008) and the median family income was $113,750 (+/− $18,599).

[36] As of the 2000 United States census[14] there were 2,244 people, 1,043 households, and 535 families residing in the borough.

[37][35] As of the 2000 Census, 36.5% of Avon-by-the-Sea residents were of Irish ancestry, the third-highest percentage of any municipality in the United States, and second-highest in New Jersey, among all places with more than 1,000 residents identifying their ancestry.

41.1% of all households were made up of individuals, and 18.5% had someone living alone who was 65 years of age or older.

[42] The governing body is comprised of three commissioners who are elected at-large on a non-partisan basis as part of the November general election to serve four-year terms of office on a concurrent basis.

[47] For the 119th United States Congress, New Jersey's 4th congressional district is represented by Chris Smith (R, Manchester Township).

[80] For ninth through twelfth grades, public school students attend either Asbury Park High School or Manasquan High School, as part of sending/receiving relationships with the respective districts, based on the results of a lottery under which 62.5% of students are sent to Manasquan and 37.5% to Asbury Park.

[81][82][83][84] As of the 2022–23 school year, Asbury Park High School had an enrollment of 607 students and 50.0 classroom teachers (on an FTE basis), for a student–teacher ratio of 12.1:1,[85] The Manasquan school also serves students from Belmar, Brielle, Lake Como, Sea Girt, Spring Lake, Spring Lake Heights who attend as part of sending/receiving relationships with their respective districts.

[89] Students also have the option to attend Academy Charter High School in Lake Como, which accepts students on a lottery basis from the communities of Allenhurst, Asbury Park, Avon-by-the-Sea, Belmar, Bradley Beach, Deal, Interlaken and Lake Como.

The closest NJ transit train service is at the Belmar[94] and Bradley Beach stations.