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CITY · 2020 ACS

Marble Rock

Iowa · 271 residents · 0.832 sq mi
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The short version

Marble Rock has lower-than-average household income, with a median household income of $59,250. Population has fallen 17% since 2000, a loss of 55 residents. 11% of adults hold a bachelor's degree or higher, below the national rate of 33%. Median home value has risen by half since 2000, reaching $57,200. With a median age of 46.3, the population is older than the US median of 38.8.

At a glance
Lower income
below the US median
US median: $66,278
Older
median age 46.3
US median: 38.8
Less educated
11% hold a bachelor's degree
US average: 33%
Stable housing
home values roughly flat, inflation adjusted
US median home: $265,253
Section 01

Population & growth

Total population
271
−17%since 2000
from 326 in 2000
1990 – 2025
Population density
326 / sq mi
−17%since 2000
from 392 / sq mi in 2000
US average: 280
Median age
46.3
+11%since 2000
from 41.8 in 2000
US average: 38.8
Population, 1990 – 2024
1732262803333861990201020202024Marble Rock
2024191
1990201020202024
Section 02

Income & economy

Median household income
$59,250
+11%inflation adjusted, since 2000
from $35,500 in 2000
US average: $66,278
1990 – 2024
Per capita income
$35,791
+100%since 2000
from $17,937 in 2000
US average: $35,364
Households earning $100K+
43.7%
+23.0 ptssince 2009
from 20.7% in 2009
US average: 43.9%
Poverty rate
6.2%
−1.0 ptssince 2000
from 7.2% in 2000
US average: 12.8%
Workforce by industry, 2020
Retail trade28.6%
US avg: 10%
Agriculture, forestry, fishing12%
US avg: 1.7%
Construction9.9%
US avg: 1.2%
Finance & insurance7.3%
US avg: 5.5%
Professional, scientific, technical5.7%
US avg: 4.7%
Information4.7%
US avg: 11.1%
Wholesale trade3.6%
US avg: 6.7%
Transportation & warehousing2.6%
US avg: 2.5%
Manufacturing2.1%
US avg: 0.5%
Education & health services1.6%
US avg: 0.8%
Arts, entertainment, food1%
US avg: 2%
Other services1%
US avg: 6.6%
Public administration1%
US avg: 4.7%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$57,200
+9%inflation adjusted, since 2000
from $34,800 in 2000
US average: $265,253
1990 – 2024
Median gross rent
$500
−7%inflation adjusted, since 2000
from $356 in 2000
US average: $1,124
Owner-occupied
77.8%
+3.3 ptssince 2000
from 74.5% in 2000
22.2% rent
Afford Score
1.0
−2%since 2000
from 1.0 in 2000
1990 – 2024
RELATED:See current rent listings in Marble Rock on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic99.4%(324)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)
Other0%
Diversity Score0%(0)
2020
White, non-Hispanic98.9%(268)
Black0%(0)
Hispanic / Latino0.4%(1)
Asian0%(0)
Other2.8%(8)
Diversity Score7.5%(20)
Diversity Score
8
from 0 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
11.2%
+5.1 ptssince 2000
from 6.1% in 2000
US average: 32.9%
High school or higher
90.8%
+10.4 ptssince 2000
from 80.4% in 2000
US average: 88.5%
Graduate degree
2.8%
−0.5 ptssince 2000
from 3.3% in 2000
US average: 12.7%
Section 06

Commute & transportation

Average commute
33.9 min
+39%since 2000
from 24.4 min in 2000
US average: 26.9
Drive alone to work
82.3%
−4.0 ptssince 2009
from 86.3% in 2009
US average: 75.1%
No vehicle available
4.6%
−0.5 ptssince 2009
from 5.2% in 2009
US average: 8.4%
Section 07

Work & employment

Unemployment rate
2.0%
−2.3 ptssince 2011
from 4.3% in 2011
US average: 5.4%
Labor force participation
69.0%
+1.9 ptssince 2011
from 67.1% in 2011
US average: 63.4%
Management & professional
29.7%
−46.3 ptssince 2009
from 76.0% in 2009
US average: 39.3%
Section 08

People & community

Male
50.0%
+4.2 ptssince 2009
from 45.8% in 2009
Female
50.0%
−4.2 ptssince 2009
from 54.2% in 2009
Foreign born
0.3%
−0.8 ptssince 2009
from 1.1% in 2009
US average: 13.5%
Uninsured
2.8%
−92.3 ptssince 2013
from 95.1% in 2013
US average: 8.8%
Drill deeper

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Compare Marble Rock to nearby cities

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MARBLE ROCK VS
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MARBLE ROCK VS
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Frequently asked

How many people live in Marble Rock, Iowa?

Marble Rock, Iowa has about 271 residents according to the 2020 American Community Survey.

What is the median household income in Marble Rock, Iowa?

The typical household in Marble Rock, Iowa earns about $59,250 a year. Half of households make more than that, and half make less.

Is Marble Rock, Iowa expensive?

In Marble Rock, Iowa, the median home is worth about $57,200, and the typical rent is about $500 a month.

How educated are people in Marble Rock, Iowa?

About 11.2% of adults age 25 and over in Marble Rock, Iowa hold a bachelor's degree or higher.

What is the poverty rate in Marble Rock, Iowa?

About 6.2% of people in Marble Rock, Iowa live below the federal poverty line.

Has Marble Rock, Iowa grown since 1990?

Yes, Marble Rock, Iowa has shrunk since 1990. The population has lost about 97 residents, a change of about -26 percent over that period.

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

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