Seaville is an unincorporated community and census-designated place (CDP)State of New Jersey Census Designated Places - BVP20 - Data as of January 1, 2020, United States Census Bureau. Accessed December 1, 2022. located within Upper Township in Cape May County, in the U.S. state of New Jersey.Locality Search, State of New Jersey. Accessed June 29, 2016. As of the 2020 census, Seaville had a population of 2,426.

A post office was established in 1849, with Remington Corson as the first postmaster.

Seaville is home to the only yellow fire trucks in Cape May County, a tradition started in 1985 when the Seaville Fire Rescue Company was purchasing a new vehicle and thought that federal regulations would require the color.Leach, Ben. "Seaville firefighters stand out in yellow", The Press of Atlantic City, June 30, 2010. Accessed June 29, 2016. "For the past 35 years, residents living in Upper Township have been able to lay claim to the only yellow fire trucks in Cape May County." Since being formed in 1964 and purchasing its first fire truck a year later, the Seaville company has served the area, responding to over 200 calls a year from its fire station which is located on Route 50 across from Dino's Seaville Diner.History, Seaville Volunteer Fire & Rescue Company. Accessed June 29, 2016. Demographics Seaville was first listed as a census designated place in the 2020 U.S. census.

2020 census As of the 2020 census, Seaville had a population of 2,426. The median age was 43.8 years. 22.5% of residents were under the age of 18 and 18.4% of residents were 65 years of age or older. For every 100 females there were 92.5 males, and for every 100 females age 18 and over there were 90.8 males age 18 and over.

80.9% of residents lived in urban areas, while 19.1% lived in rural areas.

There were 915 households in Seaville, of which 34.9% had children under the age of 18 living in them. Of all households, 62.6% were married-couple households, 11.5% were households with a male householder and no spouse or partner present, and 23.4% were households with a female householder and no spouse or partner present. About 23.3% of all households were made up of individuals and 14.0% had someone living alone who was 65 years of age or older.

There were 1,162 housing units, of which 21.3% were vacant. The homeowner vacancy rate was 1.8% and the rental vacancy rate was 6.1%.

+Seaville CDP, New Jersey – Racial and ethnic compositionRace / Ethnicity (NH = Non-Hispanic)Pop 20202020White alone (NH) 2,277 93.86%Black or African American alone (NH) 7 0.29%Native American or Alaska Native alone (NH)00.00%Asian alone (NH) 80.33%Native Hawaiian or Pacific Islander alone (NH)00.00%Other race alone (NH)8 0.33%Mixed race or Multiracial (NH) 54 2.23%Hispanic or Latino (any race)72 2.97%Total2,426 100.00% Education As with other parts of Upper Township, the area is zoned to Upper Township School District (for grades K-8) and Ocean City School District (for high school). The latter operates Ocean City High School.

Countywide schools include Cape May County Technical High SchoolFrequently Asked Questions , Cape May County Technical High School. Accessed October 27, 2019. "All residents of Cape May County are eligible to attend Cape May County Technical High School.... The Cape May County Technical High School is a public school so there is no cost to residents of Cape May County."Technical High School Admissions , Cape May County Technical High School. Accessed October 27, 2019. "All students who are residents of Cape May County may apply to the Technical High School." and Cape May County Special Services School District.

Notable people Joshua Swain Jr., buried in the Calvary Baptist Church Cemetery in SeavilleStevens 1897, p. 283 Walter S. Leaming, born in SeavilleStevens 1897, p. 389

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