Overview
5,480
Total Population
40.0
Median age
49.38%
Female population %
102.5:100
Gender ratio (M:F)
55-59 years
Largest age group
38.6
Total dependency ratio
White
Largest racial group
335
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Greenwich township's population is old compared to the rest of the country:
- The median age in Greenwich township is 40.0, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Greenwich township's population under 18 was 26.35%, compared to the 22.51% nationwide.
- Greenwich township's elderly or the senior population (over 65 age) was 9.36% as compared to 16.04% nationwide.
- Of the total population in Greenwich township, 18.47% were under the age of 15, 23.43% aged 15 to 29, 48.74% aged 30 to 64, 8.91% aged 65 to 84, and 0.46% were 85 years of age and older.

Read more about Greenwich township, Warren County, New Jersey population by age ➔
Gender
There are 68 less females than males in Greenwich township:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.38% females and 50.62% males in Greenwich township, Warren County, New Jersey.
- The Greenwich township, Warren County, New Jersey gender ratio is 102.5:100 i.e. 102.5 men to 100 women (1.025).
- For male population, the largest age group is 55-59 years with a population of 315.
- For the female population, the largest age group is 55-59 years with a population of 307.

Read more about Greenwich township, Warren County, New Jersey population by gender ➔
Race / Ethnicity
Greenwich township's population has become increasingly diverse:
- Racial distribution of Greenwich township population: 78.80% are White, 5.78% are Black or African American, 8.18% are Asian, 1.57% are some other race and 5.68% are multiracial.
- Greenwich township's racial breakdown clearly shows that there is an absolute majority of White population in the township.
- By ethnicity, 335 is Hispanic or Latino (of any race), and 5,145 (93.89% of the total population) is Non-Hispanic.
- The largest racial group in Greenwich township is White with a population of 4,318 (78.80% of the total population).

Read more about Greenwich township, Warren County, New Jersey population by race ➔
Year by year
Greenwich township's population has already reached its peak and is showing a trend of decline:
- The peak population was 5,691 in the year 2010
- From 2000 to 2010, Greenwich township's population increased by 1,224 (27.40%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Greenwich township's population decreased by 226 (3.97%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
- Between the year 2000 and 2022, Greenwich township's population was lowest in year 2000 at 4,467.

Read more about Greenwich township, Warren County, New Jersey population by year ➔
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
- U.S. Census Bureau Population Estimates Population Estimates Program (PEP)