Mount Arlington is a borough located in Morris County, New Jersey. Mount Arlington has a 2025 population of 5,999 . Mount Arlington is currently growing at a rate of 0.33% annually and its population has increased by 1.71% since the most recent census, which recorded a population of 5,898 in 2020.
The average household income in Mount Arlington is $112,363 with a poverty rate of 6.29%. The median age in Mount Arlington is 45.7 years: 43.9 years for males, and 48.5 years for females. For every 100 females there are 82.9 males.
Data after 2023 is projected based on recent change
The racial composition of Mount Arlington includes 81.71% White, 3.02% Black or African American, and smaller percentages for other race, Asian, Native American and multiracial populations.
White (81.71%)
Two or more races (8.86%)
Black or African American (3.02%)
Other race (2.58%)
Asian (2.08%)
Native American (1.75%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 4,822 | 81.71% |
| Two or more races | 523 | 8.86% |
| Black or African American | 178 | 3.02% |
| Other race | 152 | 2.58% |
| Asian | 123 | 2.08% |
| Native American | 103 | 1.75% |
Married
Widowed
Divorced
Separated
Never Married
Mount Arlington's average per capita income is $67,073. Household income levels show a median of $99,511. The poverty rate stands at 6.29%.
Name | Median | Mean |
|---|---|---|
| Married Families | $124,453 | - |
| Families | $108,558 | $118,997 |
| Households | $99,511 | $112,363 |
| Non Families | $78,750 | $103,709 |
Average Income
Median Household Income
Poverty Rate