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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Mountainside. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Mountainside, New Jersey is approximatly 6602.
Racial profile for Mountainside:
| White : | 6278 |
| Black : | 62 |
| Native American : | 6 |
| Asian : | 185 |
| Pacific Islander : | 4 |
| Other : | 18 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Mountainside, New Jersey :
| 18 - 19 : | 44 |
| 20 : | 15 |
| 21 : | 12 |
| 22 - 24 : | 57 |
| 25 - 29 : | 94 |
| 30 - 34 : | 161 |
| 35 - 39 : | 232 |
| 40 - 44 : | 246 |
| 45 - 49 : | 240 |
| 50 - 54 : | 225 |
| 55 - 59 : | 221 |
| 60 - 61 : | 70 |
| 62 - 64 : | 106 |
| 65 - 66 : | 66 |
| 67 - 69 : | 111 |
| 70 - 74 : | 176 |
| 75 - 79 : | 177 |
| 80 - 84 : | 102 |
| 85+ : | 70 |
Population by age for females in Mountainside, New Jersey :
| 18 - 19 : | 37 |
| 20 : | 12 |
| 21 : | 14 |
| 22 - 24 : | 61 |
| 25 - 29 : | 82 |
| 30 - 34 : | 208 |
| 35 - 39 : | 238 |
| 40 - 44 : | 250 |
| 45 - 49 : | 257 |
| 50 - 54 : | 259 |
| 55 - 59 : | 229 |
| 60 - 61 : | 80 |
| 62 - 64 : | 116 |
| 65 - 66 : | 76 |
| 67 - 69 : | 116 |
| 70 - 74 : | 238 |
| 75 - 79 : | 197 |
| 80 - 84 : | 133 |
| 85+ : | 182 |
The total amount of households in Mountainside, New Jersey is 2434. With 6334 people of the population in these households. The average household size is 2.60.
5678 people in Mountainside, New Jersey are part of a family. The average family size in Mountainside is 2.95 people.
There are 1218 married families in Mountainside, New Jersey.
Number of married families by number of members in the family :
| 0 - 2 : | 218 | 3 - 4 : | 148 | 5 : | 72 | 6 - 11 : | 416 | 12 - 17 : | 364 |