Rock Falls, Iowa
Encyclopedia
Rock Falls is a city in Cerro Gordo County
Cerro Gordo County, Iowa
-2010 census:The 2010 census recorded a population of 44,151 in the county, with a population density of . There were 22,163 housing units, of which 19,350 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 170 at the 2000 census
United States Census, 2000
The Twenty-second United States Census, known as Census 2000 and conducted by the Census Bureau, determined the resident population of the United States on April 1, 2000, to be 281,421,906, an increase of 13.2% over the 248,709,873 persons enumerated during the 1990 Census...

. It is part of the Mason City
Mason City, Iowa
Mason City is the county seat of Cerro Gordo County, Iowa, United States. The population was 28,079 in the 2010 census, a decline from 29,172 in the 2000 census. The Mason City Micropolitan Statistical Area includes all of Cerro Gordo and Worth counties....

 Micropolitan Statistical Area
Mason City micropolitan area
The Mason City Micropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of two counties in north central Iowa, anchored by the city of Mason City....

.

Geography

Rock Falls is located at 43°12′22"N 93°5′10"W (43.206223, -93.086145).

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 0.2 square mile (0.517997622 km²), all of it land.

Demographics

As of the census of 2000, there were 170 people, 68 households, and 55 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 806.7 people per square mile (312.6/km²). There were 69 housing units at an average density of 327.4 per square mile (126.9/km²). The racial makeup of the city was 100.00% White. Hispanic or Latino of any race were 0.59% of the population.

There were 68 households out of which 32.4% had children under the age of 18 living with them, 69.1% 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, 5.9% had a female householder with no husband present, and 19.1% were non-families. 17.6% of all households were made up of individuals and 8.8% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 2.76.

In the city the population was spread out with 22.4% under the age of 18, 5.9% from 18 to 24, 29.4% from 25 to 44, 25.9% from 45 to 64, and 16.5% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 102.4 males. For every 100 females age 18 and over, there were 94.1 males.

The median income for a household in the city was $40,714, and the median income for a family was $42,917. Males had a median income of $28,750 versus $16,719 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 $17,523. None of the families and 1.1% of the population were living below the poverty line, including no under eighteens and 4.4% of those over 64.
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