|Grundy County, Missouri|
Grundy County Courthouse in Trenton
Location in the U.S. state of Missouri
Missouri's location in the U.S.
|Founded||January 2, 1841|
|Named for||Felix Grundy|
|• Total||438 sq mi (1,134 km2)|
|• Land||435 sq mi (1,127 km2)|
|• Water||2.8 sq mi (7 km2), 0.6%|
|• ( 2015)||10,097|
|• Density||24/sq mi (9/km2)|
|Time zone||Central: UTC−6/ −5|
Grundy County is a county located in the U.S. state of Missouri. As of the 2010 census, the population was 10,261.  Its county seat is Trenton.  The county was organized January 2, 1841, from part of Livingston County, Missouri and named after U.S. Attorney General Felix Grundy.  
- 1 Geography
- 2 Demographics
- 3 Education
- 4 Politics
- 5 Communities
- 6 Notable people
- 7 See also
- 8 References
- 9 External links
- Mercer County (north)
- Sullivan County (east)
- Linn County (southeast)
- Livingston County (south)
- Daviess County (southwest)
- Harrison County (northwest)
|U.S. Decennial Census
1790-1960  1900-1990 
1990-2000  2010-2015 
As of the 2010 census, there were 10,261 people, 4,204 households, and 2,694 families residing in the county. The population density was 23.43 people per square mile (9/km²). There were 5,023 housing units at an average density of 11.47 per square mile (4.43/km²). The racial makeup of the county was 96.94% White, 0.57% Black or African American, 0.42% Native American, 0.36% Asian, 0.03% Pacific Islander, 6.53% from other races, and 1.02% from two or more races. Approximately 1.73% of the population were Hispanic or Latino of any race.
There were 4,204 households out of which 28.28% had children under the age of 18 living with them, 51.05% were married couples living together, 8.68% had a female householder with no husband present, and 35.92% were non-families. 31.14% of all households were made up of individuals and 15.37% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 2.94.
In the county, the population was spread out with 24.04% under the age of 18, 9.27% from 18 to 24, 20.29% from 25 to 44, 25.93% from 45 to 64, and 20.47% who were 65 years of age or older. The median age was 41.6 years. For every 100 females there were 91.22 males. For every 100 females age 18 and over, there were 91.03 males.
The median income for a household in the county was $35,239, and the median income for a family was $45,959. Males had a median income of $31,843 versus $25,231 for females. The per capita income for the county was $18,148. About 10.2% of families and 13.3% of the population were below the poverty line, including 13.4% of those under age 18 and 16.7% of those age 65 or over.
According to the Association of Religion Data Archives County Membership Report (2010), Grundy County is sometimes regarded as being on the northern edge of the Bible Belt, with evangelical Protestantism being the majority religion. The most predominant denominations among residents in Grundy County who adhere to a religion are Southern Baptists (49.86%), United Methodists (13.51%), and Disciples of Christ (6.95%).
- Grundy County R-V School District –
- Grundy County Elementary School (K-06)
- Grundy County High School (07-12)
- Laredo R-I School District –
- Laredo Elementary School (K-08)
Pleasant View R-VI School District –
- Pleasant View Elementary School (PK-08)
- Spickard R-II School District –
- Spickard Elementary School (PK-08)
Trenton R-IX School District –
- Rissler Elementary School (PK-04)
- Trenton Middle School (05-08)
- Trenton High School (09-12)
- Grundy County Jewett Norris Library 
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The Republican Party predominantly controls politics at the local level in Grundy County. Republicans hold all of the elected positions in the county.
|Grundy County, Missouri|
|Elected countywide officials|
|Circuit Clerk||Becky Stantruf||Republican|
|County Clerk||Betty Spickard||Republican|
|Prosecuting Attorney||Carrie Lamm-Clark||Republican|
|Public Administrator||Jill Eaton||Republican|
|2016||68.59% 3,046||28.57% 1,269||2.84% 126|
|2012||53.86% 2,352||42.41% 1,852||3.73% 163|
|2008||53.65% 2,512||43.61% 2,042||2.73% 128|
|2004||58.87% 2,836||39.24% 1,890||1.89% 91|
|2000||64.50% 3,029||32.37% 1,520||3.14% 147|
|1996||32.82% 1,528||64.83% 3,018||2.34% 109|
|Democratic||David M. Blackwell||747||16.96%||+0.88|
|Libertarian||Russ Lee Monchil||86||1.95%||-2.76|
|Democratic||W.A. (Bill) Hedge||406||16.08%||-3.61|
|Libertarian||Russ Lee Monchil||119||4.71%||+2.11|
|Libertarian||Russ Lee Monchil||113||2.60%|
At the presidential level, Grundy County is reliably Republican. Like many of the rural counties throughout Missouri, Grundy County strongly favored Mitt Romney over Barack Obama in 2012, and John McCain carried the county in 2008. George W. Bush carried the county easily in 2000 and 2004. Bill Clinton was the last Democratic presidential nominee to carry Grundy County in 1996 with a plurality of the vote, and a Democrat hasn't won majority support from the county's voters in a presidential election since Lyndon Johnson in 1964.
Like most rural areas throughout northern Missouri, voters in Grundy County generally adhere to socially and culturally conservative principles which tend to influence their Republican leanings. In 2004, Missourians voted on a constitutional amendment to define marriage as the union between a man and a woman—it overwhelmingly won in Grundy County with 77% of the vote. The initiative passed the state with 71% support from voters. In 2006, Missourians voted on a constitutional amendment to fund and legalize embryonic stem cell research in the state—it failed in Grundy County with 55% voting against the measure. The initiative narrowly passed the state with 51% of support from voters as Missouri became one of the first states in the nation to approve embryonic stem cell research. Despite Grundy County's longstanding tradition of supporting socially conservative platforms, voters in the county have a penchant for advancing populist causes like increasing the minimum wage. In 2006, Missourians voted on a proposition (Proposition B) to increase the minimum wage in the state to $6.50 an hour—it passed Grundy County with 61% of the vote. The proposition strongly passed every single county in Missouri with 79% voting in favor. (During the same election, voters in five other states also strongly approved increases in the minimum wage.)
The 2016 presidential primaries for both the Republican and Democratic parties were held in Missouri on March 15. Businessman Donald Trump (R- New York) narrowly won the state overall, but received majority support in Grundy County.
The 2012 Missouri Republican Presidential Primary's results were nonbinding on the state's national convention delegates. Voters in Grundy County supported former U.S. Senator Rick Santorum (R- Pennsylvania), who finished first in the state at large, but eventually lost the nomination to former Governor Mitt Romney (R- Massachusetts). Delegates to the congressional district and state conventions were chosen at a county caucus, which selected delegations favoring U.S. Representative Ron Paul (R- Texas).
Then- Senator Hillary Clinton (D- New York) received more votes than any candidate from either party in Grundy County during the 2008 presidential primary. Despite initial reports that Clinton had won Missouri, Barack Obama (D- Illinois), also a Senator at the time, narrowly defeated her statewide and later became that year's Democratic nominee, going on to win the presidency.
- Enoch Crowder, U.S. Army general and Ambassador to Cuba
- Roy Gardner, bank robber
- Arthur M. Hyde, Governor of Missouri (1921-1925), U.S. Secretary of Agriculture (1929-1933)
- Yank Lawson, Dixieland trumpet player
- Gregg Miller, inventor and author
- "State & County QuickFacts". United States Census Bureau. Archived from the original on July 11, 2011. Retrieved September 8, 2013.
- "Find a County". National Association of Counties. Archived from the original on 2011-05-31. Retrieved 2011-06-07.
- Eaton, David Wolfe (1916). How Missouri Counties, Towns and Streams Were Named. The State Historical Society of Missouri. p. 170.
- Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 145.
- "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. Archived from the original on October 21, 2013. Retrieved November 15, 2014.
- "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 November 15, 2014.
- "Historical Census Browser". University of Virginia Library. Retrieved November 15, 2014.
- "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved November 15, 2014.
- "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Retrieved November 15, 2014.
- Breeding, Marshall. "Grundy County Jewett Norris Library". Libraries.org. Retrieved May 8, 2017.
- Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved 2018-03-25.
- Grundy County, Missouri (official site), Township
- http://www.grundycountymo.com - Grundy County Official Website
- Digitized 1930 Plat Book of Grundy County from University of Missouri Division of Special Collections, Archives, and Rare Books