Overview
24,251
Total Population
41.2
Median age
49.97%
Female population %
100.1:100
Gender ratio (M:F)
25-29 years
Largest age group
50.5
Total dependency ratio
White
Largest racial group
4,397
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
South Plainfield's population is old compared to the rest of the country:
- The median age in South Plainfield is 41.2, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- South Plainfield's population under 18 was 20.24%, compared to the 22.51% nationwide.
- South Plainfield's elderly or the senior population (over 65 age) was 17.22% as compared to 16.04% nationwide.
- Of the total population in South Plainfield, 16.34% were under the age of 15, 18.51% aged 15 to 29, 47.92% aged 30 to 64, 15.18% aged 65 to 84, and 2.05% were 85 years of age and older.
![South Plainfield, NJ population by age group The graph shows South Plainfield's population by age group, with age group on x-axis and the respective age group's percent of the total population on y-axis](https://i.neilsberg.com/ch/south-plainfield-nj-population-by-age-group.jpeg)
Read more about South Plainfield, NJ population by age ➔
Gender
There are 15 less females than males in South Plainfield:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.97% females and 50.03% males in South Plainfield, NJ.
- The South Plainfield, NJ gender ratio is 100.1:100 i.e. 100.1 men to 100 women (1.001).
- For male population, the largest age group is 25-29 years with a population of 1,161.
- For the female population, the largest age group is 40-44 years with a population of 1,111.
![South Plainfield, NJ population by gender and age The grouped bar chart shows South Plainfield, NJ population by age and gender across 18 age groups, defined between the age of 0 and 85 and above. The female population is shown in pink color bar and male population is shown in blue color bar. Age group is plotted on x axis and population on y axis.](https://i.neilsberg.com/ch/south-plainfield-nj-population-by-gender-and-age.jpeg)
Read more about South Plainfield, NJ population by gender ➔
Race / Ethnicity
South Plainfield's population has become increasingly diverse:
- Racial distribution of South Plainfield population: 59.72% are White, 12.59% are Black or African American, 13.57% are Asian, 0.03% are Native Hawaiian and other Pacific Islander, 7.27% are some other race and 6.82% are multiracial.
- South Plainfield's racial breakdown clearly shows that there is an absolute majority of White population in the borough.
- By ethnicity, 4,397 is Hispanic or Latino (of any race), and 19,854 (81.87% of the total population) is Non-Hispanic.
- The largest racial group in South Plainfield is White with a population of 14,483 (59.72% of the total population).
![South Plainfield, NJ population by race The bar chart shows South Plainfield, NJ population by race, in percentage. The numbers shown are based on the American Community Survey respondents self identified race. The Hispanic and Latino population is spread across the races identified and not as a separate race category.](https://i.neilsberg.com/ch/south-plainfield-nj-population-by-race.jpeg)
Read more about South Plainfield, NJ population by race ➔
Year by year
South Plainfield's population has already reached its peak and is showing a trend of decline:
- The peak population was 24,300 in the year 2021
- From 2000 to 2010, South Plainfield's population increased by 1,543 (7.06%), as compared to the national growth of 9.63%.
- From 2010 to 2020, South Plainfield's population increased by 900 (3.85%), 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, South Plainfield's population was lowest in year 2000 at 21,844.
![South Plainfield, NJ population from 2000 to 2022 The graph shows South Plainfield's population from 2000 to 2022, with years on x-axis and population on y-axis](https://i.neilsberg.com/ch/population-of-south-plainfield-nj-population-by-year-2000-2022.jpeg)
Read more about South Plainfield, NJ 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)