Marble Rock City, Iowa

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Marble Rock City, Iowa is a city of the Floyd County, Iowa, United States. As per the 2000 census, city has a population of 326 inhabitants. As of July 2008, the population was estimated at 326, making it the 577th most populous in Iowa. It has total area of 0.87 square miles (2.25 kmē), of which, 0.84 square miles (2.18 kmē) of it is land and 0.04 square miles (0.1 kmē) of it is water, makes it the 439th largest by total area in Iowa.

According to 2000 Census Bureau, there were 326 people, 141 households, and 95 families residing in the city. The population density was 390.1 people per square mile (150.62/kmē), making its Iowa's 230th least densely populated city. There were 157 housing units at an average density of 186.9 per square mile (72.16/kmē). The average household size was 2.31 and the average family size was 2.78. In the city the population is diverse age-wise, 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 or older. For every 100 females there were 100 males. For every 100 females age 18 and over, there were 96.9 males. The median age of the city's population was 41.8 years, The median age of males was 40.9 years, for females the median age was 44.5 years. The racial makeup of the city was 99.39% White, 0% Black or African American, 0% American Indian, 0% Asian, 0% Native Hawaiian, 0.61% from two or more races and 0% Other races.

Population 2000-2008

School Enrollment 2000

GDP 2000

The median income for a household in the city was $35500, it is Iowa's 405th wealthiest city by median household income. The median income for a family in the city was $38750, it is the 301st lowest city by median family income in the U.S. state of Iowa. The per capita income for the city was $17937, it would be the 324th highest city by per capita income in the U.S. state of Iowa. The median income is $20000, The median income for males was $21071, compared to $17273 for females.

In 2000, 72 pupils and students, of which 38 are male and 34 are female, 22.09% of the total population, are in the education system. Of which, total enrollment of student are in, 6 nursery or pri school, 4 kindergarten, 26 elementary school, 27 high school and 9 College graduate school.

Year	Population
April 2000 census	326
April 2000 Estimate	326
July 2000 Estimate	325
July 2001 Estimate	320
July 2002 Estimate	321
July 2003 Estimate	321
July 2004 Estimate	320
July 2005 Estimate	320
July 2006 Estimate	321
July 2007 Estimate	323
July 2008 Estimate	326

School	Male	Female	Total
Nursery school		6	6
Kindergarten	4		4
Elementary school	12	14	26
High school	16	11	27
College or graduate school	6	3	9

Place	Median household income	Median family income	Per capita income
Marble Rock city, Iowa	$35500	$38750	$17937
Floyd County, Iowa	$35237	$41133	$17091
Iowa, United States	$39469	$48005	$19674
United States	$41994	$50046	$21587