Historical population
| Census | Pop. | Note | %± |
|---|
| 2010 | 2,755 | | — |
|---|
| 2020 | 2,558 | | −7.2% |
|---|
|
Greenwich first appeared as a census designated place in the 2010 U.S. census.[14]
Greenwich CDP, Warren County, New Jersey – Racial and ethnic composition
Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.
| Race / Ethnicity (NH = Non-Hispanic) |
Pop 2010[15] |
Pop 2020[16] |
% 2010 |
% 2020 |
|---|
| White alone (NH) |
1,865 |
1,454 |
67.70% |
56.84% |
| Black or African American alone (NH) |
286 |
352 |
10.38% |
13.76% |
| Native American or Alaska Native alone (NH) |
4 |
1 |
0.15% |
0.04% |
| Asian alone (NH) |
296 |
318 |
10.74% |
12.43% |
| Native Hawaiian or Pacific Islander alone (NH) |
1 |
0 |
0.04% |
0.00% |
| Other race alone (NH) |
1 |
17 |
0.04% |
0.66% |
| Mixed race or Multiracial (NH) |
55 |
110 |
2.00% |
4.30% |
| Hispanic or Latino (any race) |
247 |
306 |
8.97% |
11.96% |
| Total |
2,755 |
2,558 |
100.00% |
100.00% |
The 2010 United States census counted 2,755 people, 805 households, and 722 families in the CDP. The population density was 3,037.7 per square mile (1,172.9/km2). There were 818 housing units at an average density of 902.0 per square mile (348.3/km2). The racial makeup was 73.58% (2,027) White, 10.60% (292) Black or African American, 0.15% (4) Native American, 11.07% (305) Asian, 0.07% (2) Pacific Islander, 1.67% (46) from other races, and 2.87% (79) from two or more races. Hispanic or Latino of any race were 8.97% (247) of the population.[13]
Of the 805 households, 63.2% had children under the age of 18; 80.0% were married couples living together; 7.3% had a female householder with no husband present and 10.3% were non-families. Of all households, 7.8% were made up of individuals and 2.9% had someone living alone who was 65 years of age or older. The average household size was 3.42 and the average family size was 3.62.[13]
38.3% of the population were under the age of 18, 4.1% from 18 to 24, 28.2% from 25 to 44, 25.3% from 45 to 64, and 4.1% who were 65 years of age or older. The median age was 35.8 years. For every 100 females, the population had 92.5 males. For every 100 females ages 18 and older there were 88.0 males.[13]
United States
New Jersey