City · Indiana
Plymouth, Indiana
Plymouth, city, in Marshall County, Indiana. Plymouth had 11,081 residents on July 1, 2025 by the Census Bureau's estimate, up 8.6% since 2020; the 2020 Census counted 10,214 and the ACS 2020-2024 5-year estimates put it at 10,664 (±41). GEOID 1860822.
Residents, July 2025 estimate
11,081
Census Bureau estimate (no margin published)
2020 Census count: 10,214 · ACS 2020-2024: 10,664 ±41
Median household income
$58,623
±$5,241 (90% margin)
Indiana: $71,957
Median home value
$131,800
±$17,978 (90% margin)
Indiana: $218,200
Median gross rent
$957
±$42 (90% margin)
Indiana: $1,062
Where is Plymouth and what county is it in?
Plymouth is a city in Marshall County, Indiana. It covers 7.6 square miles of land, 1,349 residents per square mile in 2020.
Plymouth is in the Plymouth, IN micropolitan statistical area (Census Bureau delineation, July 2023).
Plymouth lies mostly within Center Township (Marshall County) and reaches into West Township, towns or townships with their own local government (2020 census blocks).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Plymouth, and is it growing?
The Census Bureau estimates that 11,081 people lived in Plymouth on July 1, 2025, up 8.6% since 2020, faster than Indiana (+2.8%). The 2020 Census counted 10,214 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 10,664 (±41).
| Measure | Plymouth | Marshall County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 10,664 ±41 | 46,284 | +610 |
| Households | 4,528 ±277 | 17,758 | +779 |
| Average household size | 2.28 ±0.14 | 2.57 | −0.30 |
| Housing units | 4,853 ±318 | 20,111 | +455 |
Plymouth's population since 2000
From 9,840 in 2000 to 11,081 in 2025: up 12.6%. The 2000, 2010 and 2020 figures are census counts, each for Plymouth as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Plymouth?
The median resident of Plymouth is 37.7 years old; 23.5% are under 18 and 16.9% are 65 or older. The largest group is non-Hispanic white residents at 71.8%, then Hispanic or Latino residents (of any race) at 24.9%. 12.7% of residents were born outside the United States.
| Measure | Plymouth | Marshall County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 37.7 ±4.2 | 39.8 | no clear change |
| Under 18 years | 23.5% ±2.9 pts | 24.5% | – |
| 65 years and over | 16.9% ±2.2 pts | 19.0% | – |
| Male | 51.1% ±2.9 pts | 50.5% | – |
| Hispanic or Latino (any race) | 24.9% ±3.9 pts | 11.9% | no clear change |
| White alone, not Hispanic | 71.8% ±4.1 pts | 84.9% | no clear change |
| Black or African American alone, not Hispanic | 0.7% ±0.5 pts | 0.6% | – |
| Asian alone, not Hispanic | 0.7% ±0.8 pts | 0.6% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.1 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.1% ±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.7% ±1.1 pts | 1.8% | – |
| Some other race alone, not Hispanic | 0.0% ±0.4 pts | 0.1% | – |
| Born outside the United States | 12.7% ±2.9 pts | 5.1% | no clear change |
| Speak a language other than English at home (age 5+) | 24.2% ±4.0 pts | 15.3% | – |
| Civilian veterans (age 18+) | 7.6% ±2.6 pts | 6.2% | – |
| With a disability | 16.8% ±3.0 pts | 12.9% | – |
| No health insurance coverage | 9.8% ±3.5 pts | 12.9% | no clear change |
| High school graduate or higher (age 25+) | 84.3% ±3.5 pts | 85.4% | – |
| Bachelor's degree or higher (age 25+) | 23.7% ±4.8 pts | 20.9% | +6.5 pts |
| Graduate or professional degree (age 25+) | 8.7% ±2.6 pts | 7.0% | – |
| Lived in the same house a year earlier | 86.8% ±2.9 pts | 92.0% | – |
| Moved from another state in the past year | 1.8% ±1.0 pts | 1.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Plymouth earn?
Half of Plymouth's 4,528 households earn less than $58,623 a year (±$5,241), against $71,808 in Marshall County and $71,957 in Indiana. In 2015-2019 the median was $46,286 in 2024 dollars, so it rose by $12,337 after inflation. 13.5% of residents live below the poverty line.
| Measure | Plymouth | Marshall County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $58,623 ±$5,241 | $71,808 | +$12,337 |
| Mean household income | $70,726 ±$4,586 | $89,695 | – |
| Per capita income | $30,962 ±$2,055 | $34,462 | +$7,535 |
| People below the poverty line | 13.5% ±3.9 pts | 11.7% | −11.2 pts |
| Children under 18 below the poverty line | 14.2% ±7.9 pts | 16.6% | −18.3 pts |
| Households receiving SNAP | 9.2% ±3.1 pts | 6.4% | – |
| Households with a computer | 93.8% ±2.1 pts | 90.3% | – |
| Households with a broadband subscription | 86.2% ±3.2 pts | 84.3% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Plymouth?
Owners occupy 57.8% of Plymouth's occupied homes and renters 42.2%. The median owner-occupied home is valued at $131,800 by its owner (±$17,978). The median renter pays $957 a month including utilities, and 24.3% of renters pay 35% or more of their income on rent.
| Measure | Plymouth | Marshall County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $131,800 ±$17,978 | $204,900 | no clear change |
| Median gross rent | $957 ±$42 | $938 | no clear change |
| Renters paying 35% or more of income on rent | 24.3% ±8.3 pts | 26.3% | −23.5 pts |
| Median monthly owner costs, with a mortgage | $1,177 ±$108 | $1,312 | – |
| Owner-occupied homes | 57.8% ±5.6 pts | 76.4% | no clear change |
| Renter-occupied homes | 42.2% ±5.6 pts | 23.6% | – |
| Housing units | 4,853 ±318 | 20,111 | +455 |
| Homeowner vacancy rate | 1.0% ±1.6 pts | 1.1% | – |
| Rental vacancy rate | 3.4% ±4.2 pts | 2.7% | – |
| Single-family detached homes | 63.0% ±5.0 pts | 82.1% | – |
| Mobile homes | 10.2% ±3.1 pts | 6.0% | – |
| Built 2020 or later | 1.3% ±0.9 pts | 1.3% | – |
| Built 2010 to 2019 | 6.8% ±2.5 pts | 6.0% | – |
| Built 1939 or earlier | 24.0% ±5.2 pts | 23.0% | – |
| Households with no vehicle | 4.6% ±1.8 pts | 6.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Plymouth building?
Builders took permits for 15 new housing units in Plymouth in 2025 (13 in single-family houses), 1.4 per 1,000 residents against 4.2 across Indiana.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Plymouth work and get to work?
78.5% of Plymouth's workers drive alone and 2.7% work from home. The average trip to work takes 21.8 minutes. The unemployment rate in 2020-2024 averaged 3.4%.
| Measure | Plymouth | Marshall County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 65.1% ±3.5 pts | 62.9% | – |
| Unemployment rate | 3.4% ±1.5 pts | 2.6% | no clear change |
| Drove alone to work | 78.5% ±5.2 pts | 76.8% | – |
| Carpooled | 14.4% ±5.1 pts | 10.1% | – |
| Public transportation | 0.2% ±0.4 pts | 0.1% | – |
| Walked | 1.9% ±1.4 pts | 3.3% | – |
| Worked from home | 2.7% ±1.6 pts | 5.8% | – |
| Mean travel time to work | 21.8 min ±2.0 | 22.3 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Plymouth?
3 census tracts lie mostly in Plymouth, and 1 more reaches into it (2020 census blocks). Their median household incomes run from $49,832 (Tract 205) to $72,756 (Tract 206).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 206Marshall County | 5,339 | $72,756 |
| Tract 205Marshall County | 3,928 | $49,832 |
| Tract 204Marshall County | 3,413 | $63,947 |
| Tract 203.01Marshall County | 3,815 | $88,935 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Plymouth) · Census block assignment files
How does Plymouth compare with other places in Indiana?
By the Census Bureau's July 2025 estimates, Plymouth is the 2,991st-most populous of the 19,476 U.S. incorporated places that have one and the 80th-most populous of 566 in Indiana.
Plymouth ranks 836th of 1,072 places in Indiana with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 80th | 566 |
| Growth 2020-2025 (PEP) | 53rd | 1,056 |
| Residents per square mile | 230th | 1,088 |
| Median household income | 836th | 1,072 |
| Per capita income | 795th | 1,087 |
| Median home value | 896th | 1,075 |
| Median gross rent | 361st | 904 |
| Poverty rate | 277th | 736 |
| Bachelor's degree or higher | 389th | 1,029 |
| Median age | 749th | 1,083 |
| Owner-occupied share | 1,032nd | 1,087 |
| Work from home | 587th | 595 |
| Travel time to work | 806th | 1,088 |
Plymouth's figures with every place in Indiana (CSV)
Every place in Indiana, sortable · Compare Plymouth with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Plymouth?
10 of the 57 figures for Plymouth on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Plymouth are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Plymouth.