Each edition grades its towns against each other only.
Home to 2 places on the National Register of Historic Places.
No town among the 141 in Iowa we compare has a lower share of adults with a bachelor’s degree than Marble Rock. Its National Register listings include River Street Bridge and Marble Rock Bank. Marble Rock has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
Where Marble Rock beats most towns.
In a town this size, neighbors are the best guide. Ask them anything.
Census counts: 409 in 1880, a peak of 660 in 1940, 271 in 2020. The archive holds 1 old photo or paper going back to 2004 and 2 maps from 1972 on.
2 places on the National Register of Historic Places.
Who provides power, water and the rest in Marble Rock, and how to reach them.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.
Ordered by what stands out in Marble Rock.
Only 8 of the 141 Iowa towns we compare have a higher typical journey to work than Marble Rock. Jobs based in the town fell to 19 in 2023, 29 fewer than in 2013. Marble Rock: 6.3% of residents live below the poverty line. The median commute is under 22 miles.
| Marble Rock | Iowa towns | U.S. towns | |
|---|---|---|---|
| Working residents who work in town | 0.8% | 31% | 8% |
| Average trip to work | 25 minutes | 19 minutes | 25 minutes |
| Below the poverty line | 6.3% | 11% | 9.6% |
| Median household income | $66,000 | $69,000 | $80,000 |
Census LEHD 2023 · ACS
FEMA puts 44% of Marble Rock’s expected hazard losses down to inland flooding, and 26% to drought. Compared with 77% of U.S. communities, expected storm and flood damage in the town is higher. Households locally have drawn federal disaster aid in 3 declared disasters, most recently in 2008.
FEMA disaster declarations and aid · FEMA National Risk Index · OpenFEMA
Typical home values rose 8% in the year to September 2026. The midpoint rent for Marble Rock comes to $822 a month. Just over three quarters of households own their home locally, where Iowa’s towns sit at 70% and U.S. towns at 73%.
| Marble Rock | Iowa towns | U.S. towns | |
|---|---|---|---|
| Median rent | $822 a month | $911 a month | $1,185 a month |
| Households that own their home | 76% | 70% | 73% |
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
NOAA U.S. Climate Normals, 1991–2020
Among adults in Marble Rock, 39% have high blood pressure. Against the Iowa average, Marble Rock comes out ahead on 1 CDC measures out of 32, and behind on 7. 17% of adults smoke cigarettes locally, above both Iowa’s towns (15%) and U.S. towns (14%). Two figures for adults here: 31% sleep under 7 hours, 41% have obesity.
| Marble Rock | Iowa towns | U.S. towns | |
|---|---|---|---|
| High blood pressure (CDC PLACES) | 39% | 35% | 35% |
| Sleep under 7 hours (CDC PLACES) | 31% | 32% | 36% |
| Obesity (CDC PLACES) | 41% | 38% | 35% |
| Smoke cigarettes (CDC PLACES) | 17% | 15% | 14% |
| What stands out | Marble Rock | IA |
|---|---|---|
| More adults treating high blood pressure | 81.4% | 77.8% |
| More adults with COPD | 9% | 6.9% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Marble Rock City Park | — | 26 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
None within 15 miles of Marble Rock; the nearest are
About 6 of every 100 Marble Rock residents are enrolled in college, about the same as Iowa.
Where Marble Rock’s working residents go each day. Line width shows the share.
Census LEHD 2023
City in Iowa, USA
Marble Rock is a city in Floyd County, Iowa, United States, along the Shell Rock River. The population was 271 at the time of the 2020 census. Marble Rock has a city park, historical museums, a powerhouse on the river, and a veterans' memorial. The Marble Rock Historical Society has a website with information about the museums.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
Short answers, built from the data on this page.
Marble Rock has fewer than 1,000 residents, too few for fair grades; the figures below are still real. Home to 2 places on the National Register of Historic Places.