Castalia Flag

Castalia

County Seat:
No
Area (mi²):
0.578
State:
Iowa

Castalia is a city located in Winneshiek County, Iowa. Castalia has a 2026 population of 138. Castalia is currently declining at a rate of -0.72% annually and its population has decreased by -5.48% since the most recent census, which recorded a population of 146 in 2020.

The median household income in Castalia is $61,250 with a poverty rate of 7.86%. The median age in Castalia is 58 years: 59.2 years for males, and 57.8 years for females. For every 100 females there are 94.5 males.

138
Total Population
239
Density (mi²)
-1 -0.72%
Growth

Castalia Population

Castalia Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026138-1-0.72%
2025139-2-1.42%
2024141-1-0.7%
2023142-1-0.7%
2022143-1-0.69%
2021144-2-1.37%
202014600%
2019158-1-0.63%
2018159-1-0.62%
2017160-3-1.84%
2016163-2-1.21%
2015165-1-0.6%
2014166-4-2.35%
2013170-2-1.16%
201217200%
2011172-1-0.58%
201017300%

Median Age

Overall: 58 years
Female: 57.8 years
Male: 59.2 years

Castalia Adults

There are 130 adults, (47 of whom are seniors) in Castalia.

Sex Ratio

Female: 73 (51.4%)
Male: 69 (48.6%)

Demographics

The racial composition of Castalia includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White142100%
Race
Population ↓
Percentage (of total)
White142100%

Castalia Marital Status

Economics and Income Statistics

Castalia 's average per capita income is $41,563. Household income levels show a median of $61,250. The poverty rate stands at 7.86%.

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$80,625-
Families$66,250$88,596
Households$61,250$80,361
Non Families$45,000$59,262

$41,563

Average Income

$61,250

Median Household Income

7.86%

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)