Marble Rock

Population: 199
Median household income: $65,938
Median home value: $59,300

Located in Floyd County, Iowa, Marble Rock is a community with a population of 199. Its median household income of $65,938 runs in line with the Floyd County figure of $64,500.

From 2019 to 2023, Marble Rock's population declined 38.0% from 321 to 199, while its median home value rose 9.2% from $54,300 to $59,300.

The median gross rent is $592. 3.3% of adults 25 and older hold a bachelor's degree or higher.

Demographics

ACS 2019–2023

Population: 199
Median age: 55.1 yrs
Median household income: $65,938
Median home value: $59,300
Median gross rent: $592
Housing units: 117
Homeownership rate: 74.7%
Bachelor's degree or higher: 3.3%
Unemployment rate: 5.2%

Trends

ACS 5-year · 2019–2023

Population

321199

Median household income

$51,875$65,938

Median home value

$54,300$59,300

Median gross rent

$570$592

Year	Population	Median household income	Median home value	Median gross rent
2019	321	$51,875	$54,300	$570
2020	322	$59,250	$57,200	$500
2021	306	$56,667	$58,300	$543
2022	271	$68,036	$58,800	$594
2023	199	$65,938	$59,300	$592

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 51.0%

5 to 1712.6%

18 to 249.5%

25 to 347.5%

35 to 446.0%

45 to 5413.1%

55 to 6419.6%

65 to 7423.1%

75 and over7.5%

	Count	Share
Under 5	2	1.0%
5 to 17	25	12.6%
18 to 24	19	9.5%
25 to 34	15	7.5%
35 to 44	12	6.0%
45 to 54	26	13.1%
55 to 64	39	19.6%
65 to 74	46	23.1%
75 and over	15	7.5%

Race & ethnicity

	Count	Share
White (non-Hispanic)	190	95.5%
Black or African American	0	0.0%
American Indian & Alaska Native	0	0.0%
Asian	0	0.0%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	0	0.0%
Two or more races	9	4.5%
Hispanic or Latino (any race)	0	0.0%

Educational attainment (age 25+)

No high school diploma7.2%

High school graduate50.3%

Some college or associate's39.2%

Bachelor's degree2.6%

Graduate or professional degree0.7%

	Count	Share
No high school diploma	11	7.2%
High school graduate	77	50.3%
Some college or associate's	60	39.2%
Bachelor's degree	4	2.6%
Graduate or professional degree	1	0.7%

Commute to work

Mean travel time to work: 32 min

Drove alone82.7%

Carpooled12.7%

Public transit0.0%

Walked3.6%

Bicycle0.0%

Worked from home0.9%

Other means0.0%

How workers get to work

	Count	Share
Drove alone	91	82.7%
Carpooled	14	12.7%
Public transit	0	0.0%
Walked	4	3.6%
Bicycle	0	0.0%
Worked from home	1	0.9%
Other means	0	0.0%

Travel time

	Count	Share
Under 15 min	21	19.3%
15 to 29 min	34	31.2%
30 to 44 min	28	25.7%
45 to 59 min	21	19.3%
60+ min	5	4.6%

Households

Average household size: 2.01
Poverty rate: 7.0% (14 of 199)

	Count	Share
Family households	49	49.5%
Nonfamily households	50	50.5%

Housing

Median year structure built: 1950

Occupancy

	Count	Share
Occupied	99	84.6%
Vacant	18	15.4%

Tenure (of occupied units)

	Count	Share
Owner-occupied	74	74.7%
Renter-occupied	25	25.3%

1-unit, detached88.9%

1-unit, attached0.0%

2 to 4 units0.9%

5 to 19 units8.5%

20 or more units0.0%

Mobile home & other1.7%

Units in structure

	Count	Share
1-unit, detached	104	88.9%
1-unit, attached	0	0.0%
2 to 4 units	1	0.9%
5 to 19 units	10	8.5%
20 or more units	0	0.0%
Mobile home & other	2	1.7%

Geography

Place GEOID: 1949305
Type (LSAD): 25
Land area: 0.83 sq mi
Water area: 0.04 sq mi
Center point: 42.9646, -92.8678