Plymouth, Indiana Demographics & Population 2026
During the 2020–2024 ACS period, Plymouth, Indiana had a total population of 10,664, the 81st largest city in Indiana, with a median household income of $58,623, which is 19% lower than the state average. The poverty rate is 13.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Housing is very affordable with a home-value-to-income ratio of just 2.2x.
Plymouth Quick Facts
How Plymouth Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 10,506 | 10,664 | +1.5% |
| Median household income | $53,115 | $58,623 | +10.4% |
| Median home value | $122,200 | $131,800 | +7.9% |
How Plymouth Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 41 | National average: 61
Education
Educational Attainment (Adults 25+)
Plymouth Rankings in Indiana
Explore Indiana Rankings
Other Cities in Marshall County
Cities Similar to Plymouth
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Kendallville | 10,556 | $58,939 | $133,200 | 13.0% | 12.4% |
| Bluffton | 10,529 | $57,539 | $149,600 | 17.7% | 9.5% |
| Wabash | 10,358 | $53,410 | $116,500 | 23.4% | 14.0% |
| Decatur | 9,811 | $58,646 | $142,800 | 12.3% | 11.3% |
| Greencastle | 9,864 | $55,565 | $169,200 | 22.5% | 12.2% |
Population Overview
Plymouth is a small city located in Indiana, within Marshall County. The total population is 10,664. It ranks as the 81st most populous out of 967 Census-designated places in Indiana.
Age Demographics
The median age in Plymouth is 37.7 years. This is 1% lower than the state median of 38.1 years.
Economy, Income & Housing
The median household income in Plymouth is $58,623. This is 19% lower than the state median of $71,957. It is also 27% lower than the national median of $80,734. The poverty rate stands at 13.5%. This is 9% higher than the state poverty rate of 12.3%. The unemployment rate is 3.4%. This is 20% lower than the state rate of 4.3%. The median home value is $131,800. Housing costs are 40% lower than the state median of $218,200. With a home-value-to-income ratio of just 2.2x, Plymouth is one of the most affordable housing markets in the area. 57.8% of occupied housing units are owner-occupied. This homeownership rate is 18% lower than the state average of 70.5%.
Race & Ethnicity
The largest racial or ethnic group in Plymouth is White (non-Hispanic), making up 71.8% of the population. Hispanic or Latino residents account for 24.9%. The Black or African American population (0.7%) is well below the state average of 9.1%. The Hispanic or Latino population is significantly higher than the state average (24.9% vs 8.6%). The Asian population (0.7%) is well below the state average of 2.6%.
Education
23.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 20% lower than the state rate of 29.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 84.3%.
Data Sources & Methodology
All demographic data for Plymouth, Indiana is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Indiana state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 967 Census-designated places in Indiana. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Plymouth, Indiana?
Plymouth, Indiana has a population of 10,664 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Plymouth, IN?
The median household income in Plymouth is $58,623, which is 27% lower than the national median of $80,734.
What is the poverty rate in Plymouth, IN?
The poverty rate in Plymouth is 13.5%. This means approximately 1,390 residents live below the federal poverty line.
What is the racial makeup of Plymouth, Indiana?
Plymouth's population is 71.8% White, 0.7% Black, 24.9% Hispanic/Latino, and 0.7% Asian.
What is the median home value in Plymouth, IN?
The median home value in Plymouth is $131,800. The home-value-to-income ratio is 2.2x.
How educated is Plymouth, Indiana?
23.7% of adults (25+) in Plymouth hold a bachelor's degree or higher, and 8.7% hold a graduate or professional degree.