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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Williamstown. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Williamstown, New Jersey is approximatly 11812.
Racial profile for Williamstown:
| White : | 10120 |
| Black : | 1223 |
| Native American : | 35 |
| Asian : | 113 |
| Pacific Islander : | 7 |
| Other : | 117 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Williamstown, New Jersey :
| 18 - 19 : | 140 |
| 20 : | 76 |
| 21 : | 63 |
| 22 - 24 : | 195 |
| 25 - 29 : | 356 |
| 30 - 34 : | 430 |
| 35 - 39 : | 445 |
| 40 - 44 : | 404 |
| 45 - 49 : | 372 |
| 50 - 54 : | 370 |
| 55 - 59 : | 295 |
| 60 - 61 : | 92 |
| 62 - 64 : | 138 |
| 65 - 66 : | 90 |
| 67 - 69 : | 153 |
| 70 - 74 : | 211 |
| 75 - 79 : | 137 |
| 80 - 84 : | 63 |
| 85+ : | 39 |
Population by age for females in Williamstown, New Jersey :
| 18 - 19 : | 135 |
| 20 : | 68 |
| 21 : | 69 |
| 22 - 24 : | 194 |
| 25 - 29 : | 410 |
| 30 - 34 : | 452 |
| 35 - 39 : | 454 |
| 40 - 44 : | 470 |
| 45 - 49 : | 401 |
| 50 - 54 : | 417 |
| 55 - 59 : | 343 |
| 60 - 61 : | 111 |
| 62 - 64 : | 178 |
| 65 - 66 : | 110 |
| 67 - 69 : | 158 |
| 70 - 74 : | 299 |
| 75 - 79 : | 251 |
| 80 - 84 : | 158 |
| 85+ : | 87 |
The total amount of households in Williamstown, New Jersey is 4484. With 11806 people of the population in these households. The average household size is 2.63.
10085 people in Williamstown, New Jersey are part of a family. The average family size in Williamstown is 3.13 people.
There are 2003 married families in Williamstown, New Jersey.
Number of married families by number of members in the family :
| 0 - 2 : | 302 | 3 - 4 : | 221 | 5 : | 95 | 6 - 11 : | 710 | 12 - 17 : | 675 |