Plainfield city, Iowa Demographics & Population 2026
As of 2026, Plainfield city, Iowa has a total population of 379, the 549th largest city in Iowa, with a median household income of $75,500, which is 3% higher than the state average. The poverty rate is 7.4%.
Key Takeaways
- Housing is very affordable with a home-value-to-income ratio of just 1.8x.
- Unemployment rate of 10.1% is notably above the national average.
Plainfield city Quick Facts
How Plainfield city Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
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: 30 | National average: 60
Education
Educational Attainment (Adults 25+)
Plainfield city Rankings in Iowa
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Cities Similar to Plainfield city
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Letts city | 382 | $75,625 | $103,700 | 8.0% | 2.4% |
| Ryan city | 383 | $77,500 | $148,100 | 26.2% | 7.1% |
| Peterson city | 373 | $76,875 | $86,700 | 22.4% | 2.7% |
| Libertyville city | 373 | $74,107 | $177,700 | 14.7% | 7.3% |
| Mondamin city | 378 | $71,750 | $90,000 | 16.0% | 12.4% |
Population Overview
Plainfield city is a small community located in Iowa. The total population is 379. It ranks as the 549th most populous out of 1,018 cities and towns in Iowa.
Age Demographics
The median age in Plainfield city is 43.4 years. This is 12% higher than the state median of 38.6 years.
Economy, Income & Housing
The median household income in Plainfield city is $75,500. This is 3% higher than the state median of $73,147. Compared to the national median of $78,538, household income here is 4% lower. The poverty rate stands at 7.4%. This is 33% lower than the state poverty rate of 11.0%. The unemployment rate is 10.1%. This is 177% higher than the state rate of 3.6%. The median home value is $132,700. Housing costs are 32% lower than the state median of $195,900. With a home-value-to-income ratio of just 1.8x, Plainfield city is one of the most affordable housing markets in the area. 84.2% of occupied housing units are owner-occupied. This homeownership rate is 18% higher than the state average of 71.5%.
Race & Ethnicity
Plainfield city has a predominantly White (non-Hispanic) population, comprising 90.5% of all residents. Hispanic or Latino residents account for 4.2%. The Asian population (0.3%) is well below the state average of 2.4%.
Education
11.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 64% lower than the state rate of 30.9%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 95.8%.
Data Sources & Methodology
All demographic data for Plainfield city, Iowa is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Iowa state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,018 Census-designated places in Iowa. For official data, visit data.census.gov.
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Frequently Asked Questions
What is the population of Plainfield city, Iowa?
Plainfield city, Iowa has a population of 379 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Plainfield city, IA?
The median household income in Plainfield city is $75,500, which is 4% lower the national median of $78,538.
What is the poverty rate in Plainfield city, IA?
The poverty rate in Plainfield city is 7.4%. This means approximately 28 residents live below the federal poverty line.
What is the racial makeup of Plainfield city, Iowa?
Plainfield city's population is 90.5% White, 0.0% Black, 4.2% Hispanic/Latino, and 0.3% Asian.
What is the median home value in Plainfield city, IA?
The median home value in Plainfield city is $132,700. The home-value-to-income ratio is 1.8x.
How educated is Plainfield city, Iowa?
11.1% of adults (25+) in Plainfield city hold a bachelor's degree or higher, and 0.8% hold a graduate or professional degree.