Diagonal Flag

Diagonal

County:
Ringgold County
County Seat:
No
Area (mi²):
0.913
State:
Iowa

Diagonal is a city located in Ringgold County, Iowa. Diagonal has a 2026 population of 328. Diagonal is currently declining at a rate of -0.3% annually and its population has decreased by -2.38% since the most recent census, which recorded a population of 336 in 2020.

The median household income in Diagonal is $74,375 with a poverty rate of 7.28%. The median age in Diagonal is 49.2 years: 40.7 years for males, and 52.4 years for females. For every 100 females there are 66.3 males.

328
Total Population
359
Density (mi²)
-1 -0.3%
Growth

Diagonal Population

Diagonal Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026328-1-0.3%
2025329-2-0.6%
2024331-5-1.49%
2023336-4-1.18%
202234051.49%
2021335-1-0.3%
2020336-1-0.3%
2019316-3-0.94%
2018319-5-1.54%
201732420.62%
201632210.31%
201532100%
2014321-2-0.62%
2013323-1-0.31%
2012324-4-1.22%
2011328-2-0.61%
2010329-1-0.3%

Median Age

Overall: 49.2 years
Female: 52.4 years
Male: 40.7 years

Diagonal Adults

There are 352 adults, (151 of whom are seniors) in Diagonal.

Sex Ratio

Female: 273 (60.1%)
Male: 181 (39.9%)

Demographics

The racial composition of Diagonal includes 86.34% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White39286.34%
Two or more races6213.66%
Race
Population ↓
Percentage (of total)
White122.64%
Two or more races51.1%
Race
Population ↓
Percentage (of total)
White38083.7%
Two or more races5712.56%

Diagonal Marital Status

Economics and Income Statistics

Diagonal 's average per capita income is $39,688. Household income levels show a median of $74,375. The poverty rate stands at 7.28%.

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$90,542-
Families$90,000$83,169
Households$74,375$72,079
Non Families$24,250$34,455

$39,688

Average Income

$74,375

Median Household Income

7.28%

Poverty Rate

Nearby Cities

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)