|Cerro Gordo County, Iowa|
Location in the U.S. state of Iowa
Iowa's location in the U.S.
|Named for||Battle of Cerro Gordo|
|Largest city||Mason City|
|• Total||575 sq mi (1,489 km2)|
|• Land||568 sq mi (1,471 km2)|
|• Water||6.8 sq mi (18 km2), 1.2%|
|• ( 2010)||44,151|
|• Density||78/sq mi (30/km2)|
|Time zone||Central: UTC−6/ −5|
Cerro Gordo County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 44,151.  Its county seat is Mason City.  The county is named for the Battle of Cerro Gordo, which took place during the Mexican–American War.
Cerro Gordo County is part of the Mason City, IA Micropolitan Statistical Area.
- 1 History
- 2 Geography
- 3 Law enforcement
- 4 Demographics
- 5 Communities
- 6 Economy
- 7 Politics
- 8 See also
- 9 References
- 10 External links
Cerro Gordo County was formed in 1851 and takes its name from the Battle of Cerro Gordo in the Mexican–American War, where General Winfield Scott defeated the Mexican General Santa Anna on April 18, 1847.
In 1851 the first white settlers came into the area of the present county and settled on Clear Lake. Four years later, on August 7, 1855, the first elections were held and the first legal proceedings occurred in 1857. In the summer of the same year, Livonia was chosen as the new county seat. In 1858, the seat was returned to Mason City. In 1866, the first courthouse was erected, which was used until 1900. The courthouse still used today opened on November 17, 1960.
Cerro Gordo County was the site of the airplane crash north of the city of Clear Lake, in which rock and roll stars Buddy Holly, Ritchie Valens, and J.P. "The Big Bopper" Richardson, along with their pilot Roger A. Peterson, were killed on February 3, 1959. The site is in Grant Township, in the northwestern part of the county.
The Cerro Gordo County Sheriff's Office is headed by Sheriff Kevin Pals. The Sheriff's Office provides law enforcement, performs investigations, executes legal processes such as writs, and is responsible for operating the county jail and for inmates in custody.
The Sheriff's Office is at 17262 Lark Ave, Mason City, IA 50401. 
- Worth County (north)
- Mitchell County (northeast)
- Floyd County (east)
- Franklin County (south)
- Hancock County (west)
|U.S. Decennial Census
1790-1960  1900-1990 
1990-2000  2010-2013 
The 2010 census recorded a population of 44,151 in the county, with a population density of 77.73/sq mi ( 30.012/km2). There were 22,163 housing units, of which 19,350 were occupied.
As of the census  of 2000, there were 46,447 people, 19,374 households, and 12,399 families residing in the county. The population density was 82 people per square mile (32/km²). There were 21,488 housing units at an average density of 38 per square mile (15/km²). The racial makeup of the county was 96.26% White, 0.80% Black or African American, 0.17% Native American, 0.70% Asian, 0.02% Pacific Islander, 0.88% from other races, and 1.16% from two or more races. 2.78% of the population were Hispanic or Latino of any race.
There were 19,374 households out of which 29.10% had children under the age of 18 living with them, 51.90% were married couples living together, 9.10% had a female householder with no husband present, and 36.00% were non-families. 30.90% of all households were made up of individuals and 13.50% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 2.91.
In the county, the population was spread out with 23.80% under the age of 18, 9.00% from 18 to 24, 26.40% from 25 to 44, 23.20% from 45 to 64, and 17.70% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 92.80 males. For every 100 females age 18 and over, there were 89.10 males.
The median income for a household in the county was $35,867, and the median income for a family was $46,099. Males had a median income of $31,790 versus $21,781 for females. The per capita income for the county was $19,184. About 5.90% of families and 8.50% of the population were below the poverty line, including 9.10% of those under age 18 and 8.60% of those age 65 or over.
Cerro Gordo County is divided into sixteen townships:
† county seat
|Rank||City/Town/etc.||Municipal type||Population (2010 Census)
|1||† Mason City||City||28,079|
|3||Nora Springs (mostly in Floyd County)||City||1,431|
- "State & County QuickFacts". United States Census Bureau. Retrieved July 14, 2014.
- "Find a County". National Association of Counties. Archived from the original on 2011-05-31. Retrieved 2011-06-07.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "Cerro Gordo County Sheriff". Cerro Gordo County, Iowa. Retrieved 2016-11-17.
- "Population and Housing Unit Estimates". Retrieved June 9, 2017.
- "U.S. Decennial Census". United States Census Bureau. Archived from the original on May 12, 2015. Retrieved July 14, 2014.
- "Historical Census Browser". University of Virginia Library. Retrieved July 14, 2014.
- "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 14, 2014.
- "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Retrieved July 14, 2014.
- "Population and Housing Occupancy Status: 2010 - State -- County". United States Census Bureau American FactFinder. Retrieved March 8, 2011.
- "American FactFinder". United States Census Bureau. Archived from the original on 2013-09-11. Retrieved 2008-01-31.
- "Archived copy". Archived from the original on 2013-12-21. Retrieved 2013-02-10.
- JOHN SKIPPER (September 6, 2016). "Supervisors appeal DNR decision to approve hog confinement facility". Mason City: Globe Gazette. Retrieved 7 February 2017.
- Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved 2018-04-25.
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