Strathmere is an unincorporated community and census-designated place (CDP)[8] located within Upper Township in Cape May County, in the U.S. state of New Jersey.

[15] That same year, Sea Isle City sold Corson's Inlet to Upper Township for $31,500 (equivalent to $1,070,000 in 2023) to pay off municipal debt.

[citation needed] In 2007, Citizens for Strathmere and Whale Beach petitioned to leave Upper Township and join neighboring Sea Isle City, citing an unfair tax burden, inadequate municipal services, and a lengthy wait time for the police.

The local planning board held 18 meetings over the next two years, and the township recommended against de-annexation in 2009, noting that taxes would increase school taxes by 20% for the remainder of Upper Township.

The group in favor of de-annexation filed a suit with the New Jersey Superior Court, which ruled against the petition in 2010.

[17][18] The 2010 United States census counted 158 people, 82 households, and 49 families in the CDP.

Of all households, 36.6% were made up of individuals and 20.7% had someone living alone who was 65 years of age or older.

[11] As of the 2000 United States census[5] there were 175 people, 93 households, and 54 families residing in the CDP.

[12] According to the Köppen climate classification system, Strathmere has a humid subtropical climate (Cfa) with hot, moderately humid summers, cool winters and year-around precipitation.

The plant hardiness zone at Strathmere Beach is 7b with an average annual extreme minimum air temperature of 5.0 °F (−15.0 °C).