Castalia vs Spillville

A side-by-side comparison of Castalia and Spillville: population, income, housing, and more.

Castalia and Spillville are places in Iowa. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Spillville has the higher population (409 vs 142 in Castalia). Castalia has the higher median household income ($50,714 vs $42,750 in Spillville). Spillville has the higher median home value ($156,600 vs $96,900 in Castalia).

Population, income & housing

	Castalia	Spillville
Population	142	409
Median age	59.3 yrs	45.0 yrs
Median household income	$50,714	$42,750
Median home value	$96,900	$156,600
Median gross rent	—	$929
Housing units	82	221
Homeownership rate	93.2%	57.6%
Bachelor's degree or higher	6.7%	20.4%
Unemployment rate	0.0%	2.7%

Trends (ACS 5-year, 2019–2023)

	Castalia	Spillville
Population	163 → 142 (-12.9%)	474 → 409 (-13.7%)
Median household income	$35,938 → $50,714 (+41.1%)	$28,269 → $42,750 (+51.2%)
Median home value	$78,100 → $96,900 (+24.1%)	$122,900 → $156,600 (+27.4%)
Median gross rent	$621 → $731 (+17.7%)	$741 → $929 (+25.4%)

Castalia

Population

163142

Median household income

$35,938$50,714

Median home value

$78,100$96,900

Median gross rent

$621$731

Spillville

Population

474409

Median household income

$28,269$42,750

Median home value

$122,900$156,600

Median gross rent

$741$929

Age & race/ethnicity

Age distribution (share)

	Castalia	Spillville
Under 5	0.0%	7.1%
5 to 17	9.2%	17.4%
18 to 24	6.3%	9.8%
25 to 34	16.9%	7.3%
35 to 44	2.8%	8.6%
45 to 54	6.3%	12.7%
55 to 64	21.8%	8.3%
65 to 74	20.4%	11.5%
75 and over	16.2%	17.4%

Race & ethnicity (share)

	Castalia	Spillville
White (non-Hispanic)	100.0%	85.8%
Black or African American	0.0%	0.0%
American Indian & Alaska Native	0.0%	0.0%
Asian	0.0%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.7%
Two or more races	0.0%	1.0%
Hispanic or Latino	0.0%	12.5%

Educational attainment (age 25+)

Share of adults 25+

	Castalia	Spillville
No high school diploma	10.0%	4.1%
High school graduate	54.2%	45.7%
Some college or associate's	29.2%	29.7%
Bachelor's degree	6.7%	18.2%
Graduate or professional degree	0.0%	2.2%

Commute to work

How workers get to work (share)

	Castalia	Spillville
Drove alone	83.3%	89.4%
Carpooled	4.5%	7.3%
Public transit	0.0%	0.0%
Walked	0.0%	2.2%
Bicycle	0.0%	0.0%
Worked from home	10.6%	1.1%
Other means	1.5%	0.0%

Housing

Units in structure (share)

	Castalia	Spillville
1-unit, detached	81.7%	86.0%
1-unit, attached	7.3%	0.0%
2 to 4 units	3.7%	12.2%
5 to 19 units	0.0%	0.5%
20 or more units	0.0%	1.4%
Mobile home & other	7.3%	0.0%

Poverty & households

	Castalia	Spillville
Poverty rate	8.5%	16.9%
Average household size	1.92	2.01
Mean commute (minutes)	24	23
Median year structure built	1938	1949