Plainfield, IA demographics:
population, income, and more

Total population
314
-17.1% year-over-year change
Median household income
$80,000/yr
6.0% year-over-year change
Housing units
146
-20.2% year-over-year change

Plainfield population

How many people live in Plainfield

Plainfield is home to 314 residents, according to the most recent Census data. Gender-wise, 51% of Plainfield locals are male, and 49% are female.

Total population
314
-17.1% year-over-year change
Gender ratio
Male
51%
160
Female
49%
154
Value Percent YoY change
Male 160 51% -8.6%
Female 154 49% -24.5%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Plainfield is 44, with the population distributed as follows: about 15.6% are children under 15, then 14.3% are in the 15 to 24 age group. Adults between 25 and 44 make up 22.9% of the population, while another 27.1% fall into the 45 to 64 bracket. Finally, around 20.1% are 65 or older.

Median age
43.7
Age breakdown
Under 15
15.6%
15 to 24
14.3%
25 to 44
22.9%
45 to 64
27.1%
Over 65
20.1%
Value Percent YoY change
Under 15 49 15.6% -19.7%
15 to 24 45 14.3% -21.1%
25 to 44 72 22.9% -20.9%
45 to 64 85 27.1% -3.4%
Over 65 63 20.1% -23.2%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Plainfield, 98.1% of the population are US-born citizens, while 1.3% have gained naturalized citizenship. At the same time, 0.6% of residents are non-citizens. There’s also a share of 8.9% that includes residents with two or more races.

Citizenship
U.S.-born citizens
98.1%
Non-U.S.-born citizens
1.3%
Non-citizens
0.6%
Value Percent YoY change
U.S.-born citizens 308 98.1% -17.4%
Non-U.S.-born citizens 4 1.3% -20.0%
Non-citizens 2 0.6% 100.0%
Racial breakdown
White
89.2%
Black or African American
0%
American Indian and Alaska Native
0.3%
Asian
0.6%
Native Hawaiian and other Pacific Islander
1%
Two or more races
8.9%
Other
0%
Value Percent
White 280 89.2%
American Indian and Alaska Native 1 0.3%
Asian 2 0.6%
Native Hawaiian and other Pacific Islander 3 1%
Two or more races 28 8.9%

Households in Plainfield

A peek inside Plainfield households

Plainfield has 132 households, with an average of 2 members in each. Of these, 61.4% are families, while the remaining 38.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
132
-19.5% year-over-year change
Average people per household
2
Non-family households
51
Family households
81
Value Percent YoY change
Non-family households 51 38.6% -16.4%
Family households 81 61.4% -21.4%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Plainfield

The housing landscape of Plainfield

Plainfield's housing consists of 146 units, with 96.6% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 0.7% and offer a more compact, shared living style.

Housing units
146
-20.2% year-over-year change
Housing types
Value Percent
1 unit, detached 141 96.6%
1 unit, attached 1 0.7%
3 or 4 units 4 2.7%
Homes built since 2020
0
% year-over-year change

The age of buildings in Plainfield

In Plainfield, the median construction year is 1955. About 30.1% of homes were built before the 1940s, with another 15.1% going up by 1949. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 44 30.1% -25.4%
Built between 1940 and 1949 22 15.1% 37.5%
Built between 1950 and 1959 13 8.9% -35.0%
Built between 1960 and 1969 23 15.8% -17.9%
Built between 1970 and 1979 34 23.3% -19.1%
Built between 1980 and 1989 2 1.4% -77.8%
Built between 1990 and 1999 2 1.4% 0.0%
Built between 2000 and 2009 6 4.1% -14.3%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Plainfield occupancy rates

Out of the 132 occupied housing units in Plainfield, 87.1% are owner-occupied, while 12.9% are lived in by tenants. Meanwhile, 9.6% of all homes on the local market sit vacant.

Occupied housing units
132
-19.5% year-over-year change
Occupancy breakdown
Renter occupied
17
Owner occupied
115
Value Percent YoY
change
Renter occupied 17 12.9% -34.6%
Owner occupied 115 87.1% -16.7%
Unoccupied housing units
9.6%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Plainfield housing costs

Housing costs in Plainfield come to a median of $869 per month, while tenants specifically pay a median gross rent of $684.

Median housing costs per month
$869/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Plainfield
$684/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Plainfield

Plainfield education at a glance

About 52.5% of the population in Plainfield went to high school, while 17.4% pursued college studies. Another 12.4% earned an associate degree and 15.7% hold a bachelor’s. Meanwhile, 2.1% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
High school diploma 127 52.5% -11.8%
College diploma 42 17.4% -34.4%
Associate degree 30 12.4% -31.8%
Bachelor's degree 38 15.7% -5.0%
Graduate degree 5 2.1% 150.0%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Plainfield

How much people earn in Plainfield

The average annual household income in Plainfield was $86,207 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +4.5% change from the previous year. At the same time, the median income stood at $80,000, reflecting a +6% shift over the same period.

Average household income in Plainfield
$86,207/year
4.5% year-over-year change
Median household income in Plainfield
$80,000/year
6.0% year-over-year change

Plainfield income by age

In Plainfield, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $88,750. Those with someone between 45 and 64 in charge, often well established professionally, earn $88,125 overall. Overall, 89.7% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $88,750 -1.8%
45 - 64 $88,125 16.7%
Over 65 $48,750 -23.8%
Above poverty level
279
Below poverty level
32
Value Percent YoY
change
Above poverty level 279 89.7% -19.6%
Below poverty level 32 10.3% 14.3%

Average renter income in Plainfield

To get a better sense of what renters earn on average in Plainfield, their median household income was $55,313 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 14.8%, shows what portion of their earnings goes toward housing expenses.

Renter median household income
$55,313
Rent-to-income ratio
14.8%
Understanding the rent-to-income ratio can help renters gauge if local housing costs align with their earnings. A ratio under 30% usually signals affordability, while exceeding this mark means rent is taking a larger-than-recommended bite out of income. That could make it harder for you to cover other costs like transportation, healthcare, or child care.

Employment in Plainfield

Workforce and job types in Plainfield

The job market in Plainfield is powered by 169 working residents, spread across a range of industries and roles. 68% of the working population are employed in professional or administrative positions, while 32% are in hands-on or service-based jobs. Also, 10.1% run their own businesses, 66.3% are employed by private companies, and 17.8% work in the public sector.

Workforce demographics

Working population
169
-14.2% year-over-year change
White collar
115
Blue collar
54
Value Percent YoY change
White collar 115 68% 3.6%
Blue collar 54 32% -37.2%
Employer type
Self employees
10.1%
Private companies
66.3%
Governmental workers
17.8%
Not for profit companies
5.9%
Value Percent YoY change
Self employees 17 10.1% -5.6%
Private companies 112 66.3% -22.8%
Governmental workers 30 17.8% 11.1%
Not for profit companies 10 5.9% 42.9%
Unemployment rate
9.1%
-22.7% year-over-year change

Available workforce

The unemployment rate in Plainfield stands at 9.1%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Plainfield

How people get around in Plainfield

Means of transportation
Value Percent YoY change
Car 146 90.7% -15.1%
Bus or trolleybus 1 0.6% 0.0%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Plainfield by zipcode?

Zipcode Population Number of households Median income Average income
50666 753 321 $79,867 $86,459

Explore more communities

FAQs about Plainfield demographics 

What is the total population of Plainfield?

Plainfield has a total population of 314 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by -17.1% compared to a year ago.

What is the gender ratio in Plainfield?

The gender ratio in Plainfield is as follows:
  • 51% males (160 residents)
  • 49% females (154 residents)

What is the median age in Plainfield?

The median age in Plainfield is 43.7.

What is the age distribution of the population in Plainfield?

The age distribution in Plainfield is as follows:
  • Under 15: 15.6% (49 residents)
  • Ages 15-24: 14.3% (45 residents)
  • Ages 25-44: 22.9% (72 residents)
  • Ages 45-64: 27.1% (85 residents)
  • Over 65: 20.1% (63 residents)

What is the racial and ethnic makeup of Plainfield?

The racial and ethnic makeup of Plainfield is as follows:
  • White: 89.2% (280 residents)
  • Black or African American: 0% (0 residents)
  • American Indian and Alaska Native: 0.3% (1 residents)
  • Asian: 0.6% (2 residents)
  • Native Hawaiian and Other Pacific Islander: 1% (3 residents)
  • Two or More Races: 8.9% (28 residents)
  • Other: 0% (0 residents)

What percentage of the population in Plainfield are U.S.-born citizens?

U.S.-born citizens represent 98.1% of the population in Plainfield.

How many housing units are there in Plainfield?

There are 146 housing units in Plainfield, reflecting a -20.2% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Plainfield and what is the average household size?

Plainfield has a total of 132 households, with an average of 2 people in each.

What is the median household income in Plainfield?

Plainfield has a median household income of $80,000, representing a +6.0% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Plainfield?

The employment rate is 90.9% in Plainfield, with a workforce of 169 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 68% (115 residents)
  • Blue-collar workers: 32% (54 residents)

Places of employment:
  • Self-employed: 10.1% (17 residents)
  • Private companies: 66.3% (112 residents)
  • Governmental workers: 17.8% (30 residents)
  • Not-for-profit companies: 5.9% (10 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025