Plainfield Population

1850–2026

39,430

2026 projection

13.9% since 2020 (increase)

010K20K30K40K186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Plainfield. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202639,430+8562.22%
202538,574+2440.64%
202438,330+9732.60%
202337,357+8222.25%
202236,535+8972.52%
202135,638+1,0132.93%
202034,625+6952.05%
201933,930+7612.29%
201833,169+1,2393.88%
201731,930+1,3694.48%

Showing 10 of 31 years.

The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.

Growth since 2020, compared

Plainfield is growing faster than Hendricks County, Indiana, and the U.S.

  • Plainfield+10.5%
  • Hendricks County+10.2%
  • United States+3.1%
  • Indiana+2.7%

Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.

Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.

Plainfield Demographics

38.4median age

Median age

Female39.1 yrs
Male37.6 yrs

Adults

28,969
5,826 seniors (65+) · 20% of adults23,143 other adults

Sex

Female 44.5% · 16,190Male 55.5% · 20,179

Population by age

MaleFemale85+ years, male: 18885+ years, female: 51080–84 years, male: 37580–84 years, female: 26675–79 years, male: 47475–79 years, female: 79870–74 years, male: 70870–74 years, female: 65065–69 years, male: 94565–69 years, female: 91260–64 years, male: 82160–64 years, female: 1,01255–59 years, male: 1,04255–59 years, female: 93350–54 years, male: 1,65250–54 years, female: 66145–49 years, male: 1,10845–49 years, female: 95240–44 years, male: 2,11540–44 years, female: 1,16535–39 years, male: 1,49135–39 years, female: 1,41030–34 years, male: 1,46430–34 years, female: 99525–29 years, male: 1,87225–29 years, female: 1,00820–24 years, male: 1,61020–24 years, female: 1,05615–19 years, male: 1,29315–19 years, female: 1,04210–14 years, male: 89910–14 years, female: 1,0985–9 years, male: 1,1795–9 years, female: 9640–4 years, male: 9430–4 years, female: 75885+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–41K1K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 364 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Plainfield Income

$87,272median household income

Median household income

$87,272

Half of households earn more, half earn less

Median earnings

$50,527

Typical yearly pay for a worker 25 or older.

Poverty rate

8.1%

About 1 in 12 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Plainfield Marital Status

49% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married49%46%52%
Never married33%39%26%
Divorced12%12%12%
Widowed5%2%9%
Separated<1%<1%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

14 sources

Population

American Community Survey, 2024 5-year

Additional sources