|Year||Population||Rank in US||Growth Rate|
Based on the latest 2022 data from the US census, the current population of Marble Rock is 268. Marble Rock, Iowa is the 15,531st largest city in the US.
The peak population of Marble Rock was in 1990, when its population was 359. In 1990, Marble Rock was the 14,476th largest city in the US; now its fallen to the 15,531st largest city in the US. Marble Rock is currently 25.3% smaller than it was in 1990.
Marble Rock has shrunk 17.5% since the year 2000. Marble Rock, Iowa's growth is below average. 72% of similarly sized cities are growing faster since 2000.
|15526||Gifford, South Carolina||268||-26.7%|
|15527||Grand View-on-Hudson, New York||268||-6.9%|
|15528||Hobgood, North Carolina||268||-33.4%|
|15531||Marble Rock, Iowa||268||-17.5%|
|15532||Patrick, South Carolina||268||-24.2%|
|15536||Walcott, North Dakota||268||42.5%|
The total voting age population of Marble Rock, Iowa, meaning US citizens 18 or older, is 271. The voting age population is 47.6% male and 52.4% female.
According to the latest census statistics, 29.9% of the residents of Marble Rock are 65 or older.
The racial demographics of Marble Rock are 97.2% White, 2.2% Two or more races and 0.6% American Indian. Additionally, 1.9% of the population identifies as Hispanic.
In Marble Rock, 5.6% of residents have an income below the poverty line, and the child poverty rate is 9.1%. On a per-household basis, 2.2% of families are below the poverty line in Marble Rock.
Among those aged 16 and older, 66.7% of Marble Rock residents are in the labor force.
Among the adult population 25 years old and over, 89.2% of Marble Rock residents have at least a high school degree or equivalent, 13.3% have a bachelor's degree and 4.0% have a graduate or professional degree.
Among Marble Rock residents aged 5 and older, 3.8% of them speak a non-English language at home. Broken down by language: 3.8% of residents speak Spanish at home, 0.0% speak an Indo-European language, and 0.0% speak an Asian language.
The unemployment rate in Marble Rock is 2.1%, which is calculated among residents aged 16 or older who are in the labor force.
In Marble Rock, 12.2% of the residents in the non-military labor force are employed by the local, state and federal government.
The median household income in Marble Rock is $51,875.
In Marble Rock, 78.1% of housing units are occupied by their owners.
Renters occupy 21.9% of housing units in Marble Rock.
Of all the housing units in Marble Rock, 42.0% of them were build before 1940.
In Marble Rock, 9.9% of the total housing units were built after the year 2000.
The median gross monthly rent payment for renters in Marble Rock is $570.
In Marble Rock, 79.3% of households have an active broadband internet connection.