Plymouth, Indiana Population 2021

9,946
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Plymouth is a city located in Marshall County Indiana. It is also the county seat of Marshall County. With a 2020 population of 9,946, it is the 80th largest city in Indiana and the 3120th largest city in the United States . Plymouth is currently declining at a rate of -0.18% annually and its population has decreased by -0.87% since the most recent census, which recorded a population of 10,033 in 2010. Plymouth reached it's highest population of 10,176 in 2014. Spanning over 8 miles, Plymouth has a population density of 1,313 people per square mile.

The average household income in Plymouth is $48,483 with a poverty rate of 24.67%. The median rental costs in recent years comes to $696 per month, and the median house value is $93,600. The median age in Plymouth is 35.7 years, 33.1 years for males, and 37.9 years for females.

Plymouth Demographics

According to the most recent ACS, the racial composition of Plymouth was:

  • White: 87.92%
  • Other race: 7.27%
  • Two or more races: 2.53%
  • Black or African American: 1.67%
  • Asian: 0.62%
  • Native American: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Plymouth, Indiana is 9,946 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 10,000.The last official US Census in 2010 recorded the population at 10,033.

Plymouth, Indiana Population 2021

2019 and 2020 population is estimated by projecting the raw 2018 numbers.

Year Population Growth Growth Rate
202146,182-38-0.08%
202046,220-38-0.08%
201946,258-38-0.08%
201846,296-137-0.30%
201746,433-153-0.33%
201646,586-147-0.32%
201546,733-187-0.40%
201446,920100.02%
201346,910-32-0.07%
201246,94240.01%
201146,938-62-0.13%
201047,0000.00%

Plymouth Metro Area Population by Year

Population by Race

Race Population Percentage
White8,83987.92%
Some Other Race7317.27%
Two or More Races2542.53%
Black or African American1681.67%
Asian620.62%
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Plymouth Population by Race

Plymouth Population Pyramid $2021

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Plymouth Median Age

35.7


Total

33.1


Male

37.9


Female

Plymouth Adults

There are 7,320 adults, (1,511 of whom are seniors) in Plymouth.

Plymouth Age Dependency

73.1

Age Dependency Ratio

26

Old Age Dependency Ratio

47.1

Child Dependency Ratio

Plymouth Sex Ratio

Female

5,229

52.01%

Male

4,825

47.99%

Plymouth Population by Age

Plymouth Renter vs Owner Occupied by Household Type

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Plymouth Household Types

Type Owner Renter
Married61.7%38.3%
All52.9%47.1%
Female50.4%49.6%
Non Family47.1%52.9%
Male28.1%71.9%

52.9%

Rate of Home Ownership

Plymouth Households and Families

Type Count Average Size Owned
All3,7492.5852.9
Married1,6363.5361.7
Non Family1,4691.2247.1
Female4483.4450.4
Male1962.7928.1

3.36

Average Family Size

2.58

Average Household Size

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Plymouth Households by Type

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Education Attained Count Percentage
Less Than 9th Grade3916.33%
9th to 12th Grade90114.59%
High School Graduate2,38838.68%
Some College96215.58%
Associates Degree4727.64%
Bachelors Degree63310.25%
Graduate Degree4276.92%
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Plymouth Educational Attainment by Sex (over 25)

Plymouth Educational Attainment by Race

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Race Total High School Bachelors
White4,7864,099813
Hispanic1,239673223
Other Race25512870
2+ Races62318
Black5143
Asian444424

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

The highest rate of bachelors degrees is among asian people with a rate of 54.55%.

Plymouth Educational Attainment by Race

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Name Average Male Female
Overall$29,474$34,275$20,151
Less Than 9th Grade$27,417$29,936$10,380
High School Graduate$25,824$35,900$18,178
Some College$30,066$35,363$21,576
Bachelors Degree$31,732$38,264$24,688
Graduate Degree$36,991$$

$29,474

Average Earnings

$34,275

Average Male

$20,151

Average Female

Plymouth Earnings by Educational Attainment

Plymouth Language by Age

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Plymouth Language

80.10% of Plymouth residents speak only English, while 19.90% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 17.70% of the population.

Plymouth Language

Plymouth Poverty by Race

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Name Total In Poverty Poverty Rate
White6,8481,51922.18%
Hispanic2,41772029.79%
Other72112417.20%
Multiple24110141.91%
Black812632.10%
Asian62812.90%

24.67%

Overall Poverty Rate

21.22%

Male Poverty Rate

27.87%

Female Poverty Rate

Poverty in Plymouth

The race most likely to be in poverty in Plymouth is Multiple, with 41.91% below the poverty level.

The race least likely to be in poverty in Plymouth is Asian, with 12.90% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 8.60%. Among those working part-time, it was 17.12%, and for those that did not work, the poverty rate was 37.97%.

Plymouth Poverty

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Name Poverty
Less Than 9th Grade36.15%
High School22.00%
Some College19.38%
Bachelors or Greater12.39%

Plymouth Poverty Rate by Education

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Rate Poverty
Male Unemployed38.60%
Female Unemployed24.51%
Female Employed10.84%
Male Employed9.67%

Plymouth Poverty Rate by Employment Status and Sex

Plymouth Income by Household Type

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Name Median Mean
Households$37,610$48,483
Families$44,375$54,442
Married Families$48,882-
Non Families$25,498$38,167
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Income by Household Type

Plymouth Marital Status

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Marriage Rates

43.6%

Overall Marriage Rate

50.1%

Male Marriage Rate

38.1%

Female Marriage Rate

Plymouth Married by Age and Sex

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Plymouth Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

Plymouth Marital Status by Race

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Plymouth Marital Status

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531

Number of Veterans

478

Male Veterans

53

Female Veterans

War Veterans
Vietnam192
First Gulf War122
Second Gulf War92
Korea91
World War II30

Plymouth Veterans by War

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Age Group Veterans
35 to 54156
65 to 74142
75+129
55 to 6468
18 to 3436

Plymouth Veterans by Age

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Name Veterans % of Total
White5207.79%
Hispanic422.73%
Other Race92.11%
Black23.08%

Plymouth Veterans by Race

Plymouth Veterans by Education

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21.26%

Veteran Poverty Rate

31.30%

Veteran Disability Rate

Plymouth Veterans by Education

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57.5%

Labor Force Participation

54.1%

Employment Rate

5.9%

Unemployment Rate

Plymouth Employment by Age

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Plymouth Employment by Race

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Plymouth Employment by Education

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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68.68%

Born in Plymouth

89.85%

Native Born

10.15%

Foreign Born

7.79%

Non Citizen

2.36%

Naturalized

Place of Birth

89.85% of Plymouth residents were born in the United States, with 68.68% having been born in Indiana. 7.79% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Plymouth Place of Birth

Year Population Growth Annual Growth Rate
20219,946-18-0.18%
20209,964-18-0.18%
20199,982-18-0.18%
201810,000-34-0.34%
201710,034-47-0.47%
201610,081-51-0.50%
201510,132-44-0.43%
201410,176560.55%
201310,120-10-0.10%
201210,130-14-0.14%
201110,144130.13%
201010,1312910.29%
20009,8401,5371.71%
19908,3036100.77%
19807,693320.04%
19707,6611030.14%
19607,5588541.21%
19506,7049911.61%
19405,7134230.77%
19305,2909522.00%
19204,3385001.23%
19103,8381820.49%
19003,6569332.99%
18902,7231530.58%
18802,5700.00%

Plymouth Population by Year