Castalia city, Iowa Demographics & Population 2026
As of 2026, Castalia city, Iowa has a total population of 142, the 777th largest city in Iowa, with a median household income of $50,714, which is 31% lower than the state average. The poverty rate is 8.5%.
Key Takeaways
- Household income is 31% below the state average, indicating significant economic challenges.
- Only 6.7% of adults have a bachelor's degree, well below the national average of 35.0%.
- Housing is very affordable with a home-value-to-income ratio of just 1.9x.
- Near full employment with an unemployment rate of just 0.0%.
Castalia city Quick Facts
How Castalia city Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 30 | National average: 60
Education
Educational Attainment (Adults 25+)
Castalia city Rankings in Iowa
Explore Iowa Rankings
Cities Similar to Castalia city
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Kamrar city | 145 | $50,417 | $68,000 | 8.3% | 6.9% |
| Waterville city | 143 | $48,750 | $93,800 | 5.2% | 4.2% |
| Osterdock city | 144 | $49,185 | N/A | 1.8% | 40.3% |
| Lucas city | 137 | N/A | $34,200 | 4.0% | 23.4% |
| Barnes City city | 140 | $47,813 | $100,000 | 14.8% | 6.4% |
Population Overview
Castalia city is a small community located in Iowa. The total population is 142. It ranks as the 777th most populous out of 1,018 cities and towns in Iowa.
Age Demographics
The median age in Castalia city is 59.3 years. This is 54% higher than the state median of 38.6 years. Only 9.2% of residents are under 18, indicating fewer families with children. 16.2% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The median household income in Castalia city is $50,714. This is 31% lower than the state median of $73,147. Compared to the national median of $78,538, household income here is 35% lower. The poverty rate stands at 8.5%. This is 23% lower than the state poverty rate of 11.0%. The unemployment rate is 0.0%. This is 100% lower than the state rate of 3.6%. The median home value is $96,900. Housing costs are 51% lower than the state median of $195,900. With a home-value-to-income ratio of just 1.9x, Castalia city is one of the most affordable housing markets in the area. 93.2% of occupied housing units are owner-occupied. This homeownership rate is 30% higher than the state average of 71.5%.
Race & Ethnicity
Castalia city has a predominantly White (non-Hispanic) population, comprising 100.0% of all residents.
Education
6.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 78% lower than the state rate of 30.9%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 90.0%.
Data Sources & Methodology
All demographic data for Castalia city, Iowa is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Iowa state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,018 Census-designated places in Iowa. For official data, visit data.census.gov.
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Frequently Asked Questions
What is the population of Castalia city, Iowa?
Castalia city, Iowa has a population of 142 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Castalia city, IA?
The median household income in Castalia city is $50,714, which is 35% lower the national median of $78,538.
What is the poverty rate in Castalia city, IA?
The poverty rate in Castalia city is 8.5%. This means approximately 12 residents live below the federal poverty line.
What is the racial makeup of Castalia city, Iowa?
Castalia city's population is 100.0% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Castalia city, IA?
The median home value in Castalia city is $96,900. The home-value-to-income ratio is 1.9x.
How educated is Castalia city, Iowa?
6.7% of adults (25+) in Castalia city hold a bachelor's degree or higher, and 0.0% hold a graduate or professional degree.