According to the United States Census Bureau, Diamond Beach had a total area of 0.157 square miles, all of which was land. Diamond Beach is home to many upscale townhouses and Seapointe Village, site of a police substation that opened in 2013.
Demographics
Census 2010
Census 2000
As of the 2000 United States Census there were 218 people, 103 households, and 73 families residing in the place. The population density was 526.1/km2. There were 1,017 housing units at an average density of 2,454.2/km2. The racial makeup of the CDP was 96.33% White, 2.29% African American, 0.92% Asian, and 0.46% from two or more races. Hispanic or Latino of any race were 1.38% of the population. There were 103 households, out of which 16.5% had children under the age of 18 living with them, 60.2% were married couplesliving together, 7.8% had a female householder with no husband present, and 29.1% were non-families. 24.3% of all households were made up of individuals, and 10.7% 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 2.47. In the place the population was spread out, with 12.4% under the age of 18, 5.0% from 18 to 24, 17.4% from 25 to 44, 39.4% from 45 to 64, and 25.7% who were 65 years of age or older. The median age was 52 years. For every 100 females, there were 100.0 males. For every 100 females age 18 and over, there were 91.0 males. The median income for a household in the place was $83,787, and the median income for a family was $83,735. Males had a median income of over $100,000 versus $0 for females. The per capita income for the CDP was $54,883. None of the population or families were below the poverty line.
According to the Köppen climate classification system, Diamond Beach, New Jersey has a humid subtropical climate with hot, moderately humid summers, cool winters and year-around precipitation. Cfa climates are characterized by all months having an average mean temperature > 32.0 °F, at least four months with an average mean temperature ≥ 50.0 °F, at least one month with an average mean temperature ≥ 71.6 °F and no significant precipitation difference between seasons. During the summer months in Diamond Beach, a cooling afternoon sea breeze is present on most days, but episodes of extreme heat and humidity can occur with heat index values ≥ 95 °F. During the winter months, episodes of extreme cold and wind can occur with wind chill values < 0 °F. The plant hardiness zone at Diamond Beach is 7b with an average annual extreme minimum air temperature of 6.8 °F. The average seasonal snowfall total is between 12 and 18 inches, and the average snowiest month is February which corresponds with the annual peak in nor'easter activity.
