Penn township Flag

Penn township

County:
Johnson County
County Seat:
No
Area (mi²):
21.036
State:
Iowa

Penn township is located in Johnson County, Iowa. Penn township has a 2025 population of 32,113. Penn township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The average household income in Penn township is $142,288 with a poverty rate of 4.1%.The median age in Penn township is 34.2 years: 31 years for males, and 36 years for females.

32.1K
Total Population
1,527
Density (mi²)
0 0%
Growth

Penn township Population

Penn township Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Penn township includes 77.65% White, 7.47% Asian, 6.2% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White24,93777.65%
Two or more races2,4557.64%
Asian2,4007.47%
Black or African American1,9916.2%
Other race2830.88%
Native American360.11%
Native Hawaiian or Pacific Islander110.03%

Penn township Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Penn township's average per capita income is $62,136. Household income levels show a median of $112,035. The poverty rate stands at 4.1%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$146,999-
Families$135,488$165,762
Households$112,035$142,288
Non Families$69,375$84,121

$62,136

Average Income

$112,035

Median Household Income

4.1%

Poverty Rate

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)
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