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The total population of Mountainside is estimated to be 6,991 with 3,248 males (46.46%) and 3,743 females (53.54%). There are 495 more females than males in Mountainside.
The median household income in Mountainside was $144,156 in 2021, which marked an an increase of 6,851(4.99%) from $137,305 in 2020. This income is 193.22% of the U.S. median household income of $74,606 (all incomes in 2022 inflation-adjusted dollars).
Per the latest American Community Survey by the Census Bureau, Mountainside sees its highest median household income among householders in the age group of 25 to 44 years old, at $238,729. Overall, the median household income for the borough of Mountainside stands at $144,156.
In Mountainside, the median income for all workers aged 15 years and older, regardless of work hours, was $97,026 for males and $45,789 for females. However, when specifically considering full-time, year-round workers within the same age group, the median income was $134,342 for males and $106,501 for females.
In Mountainside, there are just three different racial groups among households. Among these, Asian households report a median household income of $239,405, followed by White households at $135,194, and Two or More Races households with a median household income of $119,420.
In 2022, the population of Mountainside was 6,957, a 0.93% decrease year-by-year from 2021. Previously, in 2021, Mountainside's population was 7,022, an increase of 0.29% compared to a population of 7,002 in 2020.
The median age in Mountainside, NJ is 51.0, as per 2021 ACS 5-Year Estimates. Of the total population, 18.45% were under the age of 15, 10.18% aged 15 to 29, 43.84% aged 30 to 64, 22.30% aged 65 to 84, and 5.23% were 85 years of age and older.
Racial distribution of Mountainside population: 77.28% are White, 2.30% are Black or African American, 10.14% are Asian, 0.89% are some other race and 9.40% are multiracial.