Plymouth County, Massachusetts Population 2020

Plymouth County, Massachusetts's estimated population is 524,458 with a growth rate of 0.61% in the past year according to the most recent United States census data. Plymouth County, Massachusetts is the 7th largest county in Massachusetts.

Year Population Growth Growth Rate
2020524,4583,1630.61%
2019521,2953,1630.61%
2018518,1323,1630.61%
2017514,9693,1040.61%
2016511,8652,7190.53%
2015509,1462,5810.51%
2014506,5653,7400.74%
2013502,8253,3240.67%
2012499,5011,3490.27%
2011498,1522,2220.45%
2010495,93060,65413.93%
1990435,27629,8397.36%
1980405,43772,12321.64%
1970333,31484,86534.16%
1960248,44958,98131.13%
1950189,46820,64412.23%
1940168,8246,5134.01%
1930162,3115,3433.40%
1920156,96812,6318.75%
1910144,33730,35226.63%
1900113,98521,28522.96%
189092,70018,68225.24%
188074,0188,65313.24%
187065,3655970.92%
186064,7689,07116.29%
185055,6978,32417.57%
184047,3734,32910.06%
183043,0444,90812.87%
182038,1362,9678.44%
181035,1695,09616.95%
180030,0735381.82%
179029,5350.00%
2020 Growth Rate
0.61%
County Website
Founded
1685
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Plymouth County, Massachusetts Population Growth

Population by Race

Race Population Percentage
White427,15583.41%
Black or African American48,1689.41%
Some Other Race17,3593.39%
Two or More Races12,0052.34%
Asian6,5411.28%
American Indian and Alaska Native6800.13%
Native Hawaiian and Other Pacific Islander2270.04%
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Plymouth County, Massachusetts Population Pyramid 2020

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Plymouth County, Massachusetts Median Age

42.6


Total

40.9


Male

44.2


Female

Plymouth County, Massachusetts Adults

There are 399,612 adults, (87,718 of whom are seniors) in Plymouth County, Massachusetts.

Plymouth County, Massachusetts Age Dependency

64.2

Age Dependency Ratio

28.1

Old Age Dependency Ratio

36.1

Child Dependency Ratio

Plymouth County, Massachusetts Sex Ratio

Female

263,009

51.36%

Male

249,126

48.64%

Plymouth County, Massachusetts Households and Families

Plymouth County, Massachusetts Renter vs Owner Occupied by Household Type

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Plymouth County, Massachusetts Household Types

Type Owner Renter
Married90%10%
All75.9%24.1%
Male64.6%35.4%
Non Family60%40%
Female56.7%43.3%

75.9%

Rate of Home Ownership

Type Count Average Size Owned
All186,3062.6975.9
Married100,3873.2990
Non Family54,6471.2360
Female23,2363.3156.7
Male8,0363.2864.6

3.21

Average Family Size

2.69

Average Household Size

5.6%

Unmarried (Opposite Sex)

0.3%

Unmarried (Same Sex)

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Plymouth County, Massachusetts Education

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Education Attained Count Percentage
Less Than 9th Grade9,8712.78%
9th to 12th Grade15,3024.31%
High School Graduate99,13427.90%
Some College65,42018.41%
Associates Degree35,2549.92%
Bachelors Degree81,94423.06%
Graduate Degree48,41013.62%
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Plymouth County, Massachusetts Educational Attainment by Race

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Name Total High School Bachelors
White299,461285,346117,823
Black28,97523,1715,464
Hispanic10,6488,3852,301
Other Race10,2977,2491,313
Multiple Races5,1924,7561,483
Asian4,6344,0802,391
Native American43843162
Islander128128128

The highest rate of high school graduation is among islander people with a rate of 100.00%.

The highest rate of bachelors degrees is among islander people with a rate of 100.00%.

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Name Average Male Female
Overall$51,090$61,023$41,311
Less Than High School$28,527$35,587$21,774
High School Grad$38,601$48,272$28,672
Some College$43,565$54,208$36,288
Bachelors Degree$64,986$83,237$53,533
Graduate Degree$82,446$105,541$72,919

$51,090

Average Earnings

$61,023

Average Male

$41,311

Average Female

Plymouth County, Massachusetts Language

Plymouth County, Massachusetts Language by Age

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Plymouth County, Massachusetts Language

86.84% of Plymouth County, Massachusetts residents speak only English, while 13.16% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 9.34% of the population.

Plymouth County, Massachusetts Poverty

Plymouth County, Massachusetts Poverty by Race

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Name Total In Poverty Poverty Rate
White408,29022,5335.52%
Black46,4398,46718.23%
Hispanic18,4243,31718.00%
Other16,7532,98117.79%
Multiple11,6101,76915.24%
Asian6,48469410.70%
Native6347511.83%

7.64%

Overall Poverty Rate

6.20%

Male Poverty Rate

8.99%

Female Poverty Rate

Poverty in Plymouth County, Massachusetts

The race most likely to be in poverty in Plymouth County, Massachusetts is Black, with 18.23% below the poverty level.

The race least likely to be in poverty in Plymouth County, Massachusetts is White, with 5.52% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.93%. Among those working part-time, it was 7.82%, and for those that did not work, the poverty rate was 15.63%.

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Name Poverty
Less Than High School20.09%
High School9.13%
Some College6.48%
Bachelors or Greater2.71%
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Name Poverty
Female Unemployed22.92%
Male Unemployed15.24%
Female Employed3.92%
Male Employed2.22%

Plymouth County, Massachusetts Income

Plymouth County, Massachusetts Income by Household Type

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Name Median Mean
Households$85,654$110,192
Families$105,568$128,520
Married Families$121,177$146,313
Non Families$42,285$60,719
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Plymouth County, Massachusetts Marital Status

Plymouth County, Massachusetts Marital Status

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Marriage Rates

51.1%

Overall Marriage Rate

53.5%

Male Marriage Rate

48.9%

Female Marriage Rate

Plymouth County, Massachusetts Married by Age and Sex

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Plymouth County, Massachusetts Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.

Plymouth County, Massachusetts Marital Status by Race

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Plymouth County, Massachusetts Veterans

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29,831

Number of Veterans

28,106

Male Veterans

1,725

Female Veterans

War Veterans
Vietnam11,892
First Gulf War4,215
Second Gulf War3,430
Korea3,372
World War II1,618
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Age Group Veterans
65 to 748,799
75+8,537
35 to 545,781
55 to 645,324
18 to 341,390
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Name Veterans % of Total
White27,6418.12%
Black9972.93%
2 or More5879.03%
Other4103.25%
Hispanic2862.20%
Asian1452.81%
Indian5110.85%

Plymouth County, Massachusetts Veterans by Education

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3.94%

Veteran Poverty Rate

27.17%

Veteran Disability Rate

Plymouth County, Massachusetts Employment Status

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67.6%

Labor Force Participation

63.9%

Employment Rate

5.4%

Unemployment Rate

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Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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74.90%

Born in Massachusetts

90.67%

Native Born

9.33%

Foreign Born

3.86%

Non Citizen

5.48%

Naturalized

Place of Birth

90.67% of Plymouth County, Massachusetts residents were born in the United States, with 74.90% having been born in Massachusetts. 3.86% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990