Plymouth County, MA Population

Overview

527,602

Total Population

42.6

Median age

51.11%

Female population %

95.7:100

Gender ratio (M:F)

55-59 years

Largest age group

54.9

Total dependency ratio

White

Largest racial group

22,314

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Plymouth County's population is old compared to the rest of the country:

The median age in Plymouth County is 42.6, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Plymouth County's population under 18 was 21.43%, compared to the 22.51% nationwide.
Plymouth County's elderly or the senior population (over 65 age) was 18.15% as compared to 16.04% nationwide.
Of the total population in Plymouth County, 17.30% were under the age of 15, 17.98% aged 15 to 29, 46.57% aged 30 to 64, 15.97% aged 65 to 84, and 2.18% were 85 years of age and older.

There are 11,730 more females than males in Plymouth County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 51.11% females and 48.89% males in Plymouth County, MA.
The Plymouth County, MA gender ratio is 95.7:100 i.e. 95.7 men to 100 women (0.957).
For male population, the largest age group is 55-59 years with a population of 20,379.
For the female population, the largest age group is 55-59 years with a population of 20,547.

Plymouth County's population has become increasingly diverse:

Racial distribution of Plymouth County population: 80.65% are White, 9.26% are Black or African American, 0.15% are American Indian and Alaska Native, 1.57% are Asian, 0.03% are Native Hawaiian and other Pacific Islander, 3.45% are some other race and 4.89% are multiracial.
Plymouth County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 22,314 is Hispanic or Latino (of any race), and 505,288 (95.77% of the total population) is Non-Hispanic.
The largest racial group in Plymouth County is White with a population of 425,485 (80.65% of the total population).

Plymouth County's population has not reached its peak yet and is showing a trend of further growth:

The peak population was 533,069 in the year 2022
From 2000 to 2010, Plymouth County's population increased by 21,560 (4.54%), as compared to the national growth of 9.63%.
From 2010 to 2020, Plymouth County's population increased by 34,217 (6.90%), 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, Plymouth County's population was lowest in year 2000 at 474,377.