Plainfield, Iowa Demographics & Population 2026
During the 2020–2024 ACS period, Plainfield, Iowa had a total population of 314, the 592nd largest city in Iowa, with a median household income of $80,000, which is 7% higher than the state average. The poverty rate is 10.2%.
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 1.6x.
- Unemployment rate of 9.1% is notably above the national average.
Plainfield Quick Facts
How Plainfield 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 | 379 | 314 | -17.2% |
| Median household income | $75,500 | $80,000 | +6.0% |
| Median home value | $132,700 | $128,100 | -3.5% |
How Plainfield 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
A less diverse community where one racial or ethnic group represents a large majority.
State average: 31 | National average: 61
Education
Educational Attainment (Adults 25+)
Plainfield Rankings in Iowa
Explore Iowa Rankings
Other Cities in Bremer County
Cities Similar to Plainfield
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Luana | 317 | $76,750 | $152,700 | 21.1% | 8.2% |
| Crawfordsville | 312 | $75,625 | $79,200 | 14.2% | 6.1% |
| Westside | 308 | $83,558 | $147,200 | 24.4% | 1.0% |
| Bronson | 312 | $86,458 | $168,800 | 22.6% | 4.8% |
| Libertyville | 324 | $76,131 | $162,500 | 13.7% | 3.1% |
A note before these figures: with a population of 314, Plainfield's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Plainfield is a small community located in Iowa, within Bremer County. The total population is 314. It ranks as the 592nd most populous out of 1,017 Census-designated places in Iowa.
Age Demographics
The median age in Plainfield is 43.7 years. This is 13% higher than the state median of 38.6 years.
Economy, Income & Housing
The median household income in Plainfield is $80,000. This is 7% higher than the state median of $75,059. It is also about the same as the national median of $80,734. The poverty rate stands at 10.2%. This is 8% lower than the state poverty rate of 11.1%. The unemployment rate is 9.1%. This is 155% higher than the state rate of 3.6%. The median home value is $128,100. Housing costs are 38% lower than the state median of $208,000. With a home-value-to-income ratio of just 1.6x, Plainfield is one of the most affordable housing markets in the area. 87.1% of occupied housing units are owner-occupied. This homeownership rate is 22% higher than the state average of 71.7%.
Race & Ethnicity
Plainfield has a predominantly White (non-Hispanic) population, comprising 88.8% of all residents. Hispanic or Latino residents account for 3.5%. The Hispanic or Latino population (3.5%) is well below the state average of 7.3%. The Asian population (0.6%) is well below the state average of 2.5%.
Education
15.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 52% lower than the state rate of 31.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.8%.
Data Sources & Methodology
All demographic data for Plainfield, Iowa 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 Iowa state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,017 Census-designated places in Iowa. 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 Plainfield, Iowa?
Plainfield, Iowa has a population of 314 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Plainfield, IA?
The median household income in Plainfield is $80,000, which is about the same as the national median of $80,734.
What is the poverty rate in Plainfield, IA?
The poverty rate in Plainfield is 10.2%. This means approximately 32 residents live below the federal poverty line.
What is the racial makeup of Plainfield, Iowa?
Plainfield's population is 88.8% White, 0.0% Black, 3.5% Hispanic/Latino, and 0.6% Asian.
What is the median home value in Plainfield, IA?
The median home value in Plainfield is $128,100. The home-value-to-income ratio is 1.6x.
How educated is Plainfield, Iowa?
15.0% of adults (25+) in Plainfield hold a bachelor's degree or higher, and 2.3% hold a graduate or professional degree.