HomeIowaFloyd CountyMarble Rock
Marble Rock, Iowa: commercial real estate data.
Marble Rock is a Census city of 191 people across 0.83 square miles of land, in Floyd County. Median household income is $65,625, 75.9 percent of occupied homes are owned.
Underlined figures are computed by MMCG Analytics, not published by the agency.
Marble Rock
What Marble Rock is
- Census place typecity
- Land area0.83 sq mi
- Water area0.04 sq mi
- Population per square mile of land229 plus or minus 70
- County holding the largest share of its areaFloyd County, 100.0 percent
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Marble Rock
How many people live in Marble Rock
- Population191 plus or minus 58
- Median age51.5
- Population under 1829 plus or minus 16
- Share under 1815.2 percent plus or minus 7.2
- Population 65 and over55 plus or minus 19
- Share 65 and over28.8 percent
- Households87 plus or minus 24
- Family households53 plus or minus 23
- Share of households that are families60.9 percent plus or minus 20.4
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Marble Rock
Income and work in Marble Rock
- Median household income$65,625 plus or minus $25,982
- Per capita income$34,115
- Civilian labor force105 plus or minus 39
- Employed99 plus or minus 38
- Unemployed6 plus or minus 7
- Unemployment rate5.7 percent plus or minus 6.3
- Adults 25 and over133 plus or minus 42
- Adults 25 and over with a high school diploma or higher95.5 percent plus or minus 41.8
- Adults 25 and over with a bachelor degree or higher3.8 percent plus or minus 8.3
- Adults 25 and over with a graduate degree1.5 percent plus or minus 7.8
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Marble Rock
Housing in Marble Rock
- Housing units107 plus or minus 27
- Occupied units87 plus or minus 24
- Vacant units20 plus or minus 17
- Vacancy rate18.7 percent plus or minus 15.2
- Owner occupied66 plus or minus 21
- Renter occupied21 plus or minus 14
- Ownership rate75.9 percent
- Median owner-occupied home value$76,000 plus or minus $22,003
- Median gross rent, monthly$822
- Annual rent as a share of median income15.0 percent plus or minus 6.1
- Single family units96 plus or minus 28
- Share single family89.7 percent
- Units in buildings of two or more9 plus or minus 13
- Share in buildings of two or more8.4 percent plus or minus 11.7
- Mobile homes2 plus or minus 3
- Median year structure built1948
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Marble Rock
How Marble Rock gets to work
- Workers 16 and over who commute95 plus or minus 37
- Commuting under 15 minutes18 plus or minus 12
- Share commuting under 15 minutes18.9 percent plus or minus 10.7
- Commuting 30 minutes or more35 plus or minus 21
- Share commuting 30 minutes or more36.8 percent plus or minus 17.0
- Drove alone85.9 percent plus or minus 17.6
- Carpooled9.1 percent plus or minus 7.3
- Public transport0.0 percent
- Walked1.0 percent plus or minus 2.0
- Worked from home4.0 percent plus or minus 4.8
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Marble Rock
Flood risk in Marble Rock
- NFIP communityCity of Marble Rock
- NFIP community number190383
- Participating in the NFIPYes
- Community Rating System classNone
- Currently effective map date06/19/20
The City of Marble Rock participates in the National Flood Insurance Program as community 190383 and carries no Community Rating System class, so no CRS premium discount applies to it.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
Floyd County, not Marble Rock
Floyd County context, not Marble Rock figures
- Establishments in Floyd County371
- Covered employment, Floyd County5,716
- Average annual pay, Floyd County$54,987
- Housing units permitted, Floyd County22
Every figure in this section is published for Floyd County as a whole and is not a measurement of Marble Rock.
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual.
Coverage
What this page does not hold.
Parcel detail, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Common questions
Marble Rock questions, answered from the record.
How many people live in Marble Rock, Iowa?
191, in 87 households. Marble Rock city covers 0.83 square miles of land, which is 229 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Marble Rock in?
Floyd County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.
What is the median household income in Marble Rock?
$65,625. The median owner-occupied home is valued at $76,000. Median gross rent is $822 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Is Marble Rock in the National Flood Insurance Program?
Yes. Marble Rock appears in the FEMA Community Status Book as Marble Rock, city of, community 190383, with no Community Rating System class, so no CRS discount applies. Whether a specific parcel sits in a mapped special flood hazard area is an address level question the platform answers.
Are the county figures on this page Marble Rock figures?
No, and they are labeled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Floyd County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Marble Rock.
Is zoning published for Marble Rock?
No. Nothing on this page presents parcel level zoning.
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