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CITY

Castalia

Iowa · 142 residents (2025 est.) · 0.578 sq mi
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The short version

Castalia has notably lower household income than the US average, with a median household income of $61,250. Population has fallen 19% since 2000, a loss of 33 residents. 10% of adults hold a bachelor's degree or higher, below the national rate of 36%. Median home value has more than doubled since 2000, reaching $97,500. With a median age of 58.0, the population is older than the US median of 38.9.

At a glance
Lower income
below the US median
US median: $82,259
Older
median age 58.0
US median: 38.9
Less educated
10% hold a bachelor's degree
US average: 36%
Less affordable
home values up 34%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
142
−19%since 2000
from 175 in 2000
1990 – 2025
Population density
246 / sq mi
−19%since 2000
from 303 / sq mi in 2000
US average: 281
Median age
58.0
+43%since 2000
from 40.5 in 2000
US average: 38.9

PEP 2025 EST:142 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
1341521701882061990201020202024Castalia
2024142
1990201020202024
Section 02

Income & economy

Median household income
$61,250
+11%inflation adjusted, since 2000
from $30,417 in 2000
US average: $82,259
1990 – 2024
Per capita income
$41,542
+141%since 2000
from $17,228 in 2000
US average: $44,673
Households earning $100K+
43.1%
+29.6 ptssince 2009
from 13.4% in 2009
US average: 53.3%
Poverty rate
7.9%
−7.5 ptssince 2000
from 15.4% in 2000
US average: 12.5%
Income inequality (Gini)
0.410
+16%since 2010
from 0.353 in 2010
US average: 0.476
Workforce by industry, 2024
Wholesale trade22%
US avg: 6.9%
Retail trade19.5%
US avg: 9.9%
Information19.5%
US avg: 10.8%
Agriculture, forestry, fishing6.1%
US avg: 1.6%
Transportation & warehousing6.1%
US avg: 2.2%
Finance & insurance6.1%
US avg: 5.9%
Professional, scientific, technical6.1%
US avg: 5.1%
Construction3.7%
US avg: 1.2%
Manufacturing2.4%
US avg: 0.4%
Education & health services0%
US avg: 0.9%
Arts, entertainment, food0%
US avg: 1.9%
Other services0%
US avg: 6.7%
Public administration0%
US avg: 4.8%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$97,500
+34%inflation adjusted, since 2000
from $40,000 in 2000
US average: $376,019
1990 – 2024
Owner-occupied
93.1%
+18.4 ptssince 2000
from 74.7% in 2000
6.9% rent
Vacancy rate
4.0%
−2.9 ptssince 2009
from 6.9% in 2009
US average: 10.0%
Owner cost-burdened
20.9%
−9.1 ptssince 2009
from 30.0% in 2009
US average: 22.9%
Renter cost-burdened
20.0%
+20.0 ptssince 2009
from 0.0% in 2009
US average: 47.4%
Afford Score
1.6
+21%since 2000
from 1.3 in 2000
1990 – 2024
Gentrification Score
47
RELATED:See current rent listings in Castalia on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic93.7%(164)
Black0%(0)
Hispanic / Latino4%(7)
Asian0%(0)
Other0%
Diversity Score9.8%(17)
2024
White, non-Hispanic100%(142)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)
Other0%(0)
Diversity Score0%(0)
Diversity Score
0
−100%since 2000
from 10 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
9.8%
−4.7 ptssince 2000
from 14.5% in 2000
US average: 35.6%
High school or higher
89.3%
+9.2 ptssince 2000
from 80.2% in 2000
US average: 89.6%
Graduate degree
0.0%
−3.8 ptssince 2000
from 3.8% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
22.2 min
+95%since 2000
from 11.4 min in 2000
US average: 26.5
Drive alone to work
89.6%
+1.6 ptssince 2009
from 88.0% in 2009
US average: 68.9%
Carpooled to work
0.0%
−9.3 ptssince 2009
from 9.3% in 2009
US average: 8.5%
Public transit
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 3.2%
Worked from home
9.1%
+9.1 ptssince 2009
from 0.0% in 2009
US average: 15.0%
Walked to work
0.0%
−2.7 ptssince 2009
from 2.7% in 2009
US average: 2.4%
Biked to work
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 0.4%
No vehicle available
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
0.0%
−5.9 ptssince 2011
from 5.9% in 2011
US average: 5.2%
Labor force participation
62.1%
−5.2 ptssince 2011
from 67.3% in 2011
US average: 63.5%
Self-employed
2.4%
−4.1 ptssince 2009
from 6.5% in 2009
US average: 13.1%
Management & professional
11.0%
−44.9 ptssince 2009
from 55.8% in 2009
US average: 42.5%
Section 08

People & community

Male
48.6%
−3.5 ptssince 2009
from 52.1% in 2009
Female
51.4%
+3.5 ptssince 2009
from 47.9% in 2009
Foreign born
1.4%
−1.4 ptssince 2009
from 2.8% in 2009
US average: 14.1%
Veterans
6.9%
−46.9 ptssince 2009
from 53.8% in 2009
US average: 6.2%
With a disability
22.5%
+9.5 ptssince 2012
from 13.0% in 2012
US average: 13.3%
Uninsured
5.6%
−84.5 ptssince 2013
from 90.1% in 2013
US average: 8.4%
Broadband at home
91.7%
+25.7 ptssince 2017
from 66.0% in 2017
US average: 91.0%
English only at home
98.6%
−0.3 ptssince 2016
from 98.9% in 2016
US average: 77.7%
Spanish at home
0.0%
Unchangedsince 2016
from 0.0% in 2016
US average: 13.6%
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Compare Castalia to nearby cities

CASTALIA VS
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CASTALIA VS
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CASTALIA VS
Waterloo
Income$57,480−6%
Home value$152,600+57%
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CASTALIA VS
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Income$76,987+26%
Home value$263,600+170%
Population41,240+28942%
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Frequently asked

How many people live in Castalia, Iowa?

Castalia, Iowa has about 142 residents according to the 2024 American Community Survey.

What is the median household income in Castalia, Iowa?

The typical household in Castalia, Iowa earns about $61,250 a year. Half of households make more than that, and half make less.

Is Castalia, Iowa expensive?

In Castalia, Iowa, the median home is worth about $97,500.

How educated are people in Castalia, Iowa?

About 9.8% of adults age 25 and over in Castalia, Iowa hold a bachelor's degree or higher.

What is the poverty rate in Castalia, Iowa?

About 7.9% of people in Castalia, Iowa live below the federal poverty line.

Has Castalia, Iowa grown since 1990?

Yes, Castalia, Iowa has shrunk since 1990. The population has lost about 32 residents, a change of about -18 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →