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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of South Plainfield. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for South Plainfield, New Jersey is approximatly 21810.
Racial profile for South Plainfield:
| White : | 16956 |
| Black : | 1866 |
| Native American : | 49 |
| Asian : | 1652 |
| Pacific Islander : | 1 |
| Other : | 759 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in South Plainfield, New Jersey :
| 18 - 19 : | 240 |
| 20 : | 113 |
| 21 : | 108 |
| 22 - 24 : | 360 |
| 25 - 29 : | 552 |
| 30 - 34 : | 756 |
| 35 - 39 : | 971 |
| 40 - 44 : | 952 |
| 45 - 49 : | 852 |
| 50 - 54 : | 714 |
| 55 - 59 : | 535 |
| 60 - 61 : | 184 |
| 62 - 64 : | 233 |
| 65 - 66 : | 138 |
| 67 - 69 : | 213 |
| 70 - 74 : | 347 |
| 75 - 79 : | 322 |
| 80 - 84 : | 167 |
| 85+ : | 92 |
Population by age for females in South Plainfield, New Jersey :
| 18 - 19 : | 216 |
| 20 : | 107 |
| 21 : | 112 |
| 22 - 24 : | 308 |
| 25 - 29 : | 581 |
| 30 - 34 : | 823 |
| 35 - 39 : | 952 |
| 40 - 44 : | 944 |
| 45 - 49 : | 868 |
| 50 - 54 : | 780 |
| 55 - 59 : | 553 |
| 60 - 61 : | 162 |
| 62 - 64 : | 278 |
| 65 - 66 : | 174 |
| 67 - 69 : | 265 |
| 70 - 74 : | 447 |
| 75 - 79 : | 409 |
| 80 - 84 : | 308 |
| 85+ : | 189 |
The total amount of households in South Plainfield, New Jersey is 7151. With 21518 people of the population in these households. The average household size is 3.01.
19614 people in South Plainfield, New Jersey are part of a family. The average family size in South Plainfield is 3.35 people.
There are 4365 married families in South Plainfield, New Jersey.
Number of married families by number of members in the family :
| 0 - 2 : | 657 | 3 - 4 : | 450 | 5 : | 266 | 6 - 11 : | 1593 | 12 - 17 : | 1399 |