Marble Rock, Iowa
Encyclopedia
Marble Rock is a city in Floyd County
, Iowa
, United States
, along the Shell Rock River
. The population was 326 at the 2000 census.
According to the United States Census Bureau
, the city has a total area of 0.9 square miles (2.3 km²), of which, 0.8 square miles (2.1 km²) of it is land and 0.04 square mile (0.1035995244 km²) of it (4.60%) is water.
of 2000, there were 326 people, 141 households, and 95 families residing in the city. The population density
was 390.1 people per square mile (149.8/km²). There were 157 housing units at an average density of 187.9 per square mile (72.2/km²). The racial makeup of the city was 99.39% White, and 0.61% from two or more races.
There were 141 households out of which 26.2% had children under the age of 18 living with them, 54.6% were married couples
living together, 7.1% had a female householder with no husband present, and 32.6% were non-families. 30.5% of all households were made up of individuals and 18.4% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.78.
In the city the population was spread out with 21.5% under the age of 18, 10.4% from 18 to 24, 22.4% from 25 to 44, 25.2% from 45 to 64, and 20.6% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 100.0 males. For every 100 females age 18 and over, there were 96.9 males.
The median income for a household in the city was $35,500, and the median income for a family was $38,750. Males had a median income of $27,917 versus $24,688 for females. The per capita income
for the city was $17,937. About 4.2% of families and 7.2% of the population were below the poverty line, including 15.4% of those under age 18 and 9.7% of those age 65 or over.
Floyd County, Iowa
-2010 census:The 2010 census recorded a population of 16,303 in the county, with a population density of . There were 7,526 housing units, of which 6,886 were occupied.-2000 census:...
, Iowa
Iowa
Iowa is a state located in the Midwestern United States, an area often referred to as the "American Heartland". It derives its name from the Ioway people, one of the many American Indian tribes that occupied the state at the time of European exploration. Iowa was a part of the French colony of New...
, United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
, along the Shell Rock River
Shell Rock River
The Shell Rock River is a tributary of the Cedar River in southern Minnesota and northern Iowa in the United States. Via the Cedar and Iowa rivers, it is part of the watershed of the Mississippi River. The United States Board on Geographic Names settled on "Shell Rock River" as the stream's name...
. The population was 326 at the 2000 census.
Geography
Marble Rock is located at 42°57′53"N 92°52′4"W (42.964695, -92.867786).According to the United States Census Bureau
United States Census Bureau
The United States Census Bureau is the government agency that is responsible for the United States Census. It also gathers other national demographic and economic data...
, the city has a total area of 0.9 square miles (2.3 km²), of which, 0.8 square miles (2.1 km²) of it is land and 0.04 square mile (0.1035995244 km²) of it (4.60%) is water.
Demographics
As of the censusCensus
A census is the procedure of systematically acquiring and recording information about the members of a given population. It is a regularly occurring and official count of a particular population. The term is used mostly in connection with national population and housing censuses; other common...
of 2000, there were 326 people, 141 households, and 95 families residing in the city. The population density
Population density
Population density is a measurement of population per unit area or unit volume. It is frequently applied to living organisms, and particularly to humans...
was 390.1 people per square mile (149.8/km²). There were 157 housing units at an average density of 187.9 per square mile (72.2/km²). The racial makeup of the city was 99.39% White, and 0.61% from two or more races.
There were 141 households out of which 26.2% had children under the age of 18 living with them, 54.6% were married couples
Marriage
Marriage is a social union or legal contract between people that creates kinship. It is an institution in which interpersonal relationships, usually intimate and sexual, are acknowledged in a variety of ways, depending on the culture or subculture in which it is found...
living together, 7.1% had a female householder with no husband present, and 32.6% were non-families. 30.5% of all households were made up of individuals and 18.4% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.78.
In the city the population was spread out with 21.5% under the age of 18, 10.4% from 18 to 24, 22.4% from 25 to 44, 25.2% from 45 to 64, and 20.6% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 100.0 males. For every 100 females age 18 and over, there were 96.9 males.
The median income for a household in the city was $35,500, and the median income for a family was $38,750. Males had a median income of $27,917 versus $24,688 for females. The per capita income
Per capita income
Per capita income or income per person is a measure of mean income within an economic aggregate, such as a country or city. It is calculated by taking a measure of all sources of income in the aggregate and dividing it by the total population...
for the city was $17,937. About 4.2% of families and 7.2% of the population were below the poverty line, including 15.4% of those under age 18 and 9.7% of those age 65 or over.