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Madison County, Ohio facts for kids

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Not to be confused with Madison, Ohio.
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Madison County
U.S. county
Madison County Courthouse
Madison County Courthouse
Flag of Madison County
Flag
 Official seal of Madison County
Seal
Map of Ohio highlighting Madison County
Location within the U.S. state of Ohio
Map of the United States highlighting Ohio
Ohio's location within the U.S.
Country  United States
State  Ohio
Founded February 16, 1810
Named for James Madison
Seat London
Largest city London
Area
 • Total 467 sq mi (1,210 km2)
 • Land 466 sq mi (1,210 km2)
 • Water 0.8 sq mi (2 km2)  0.2%%
Population
 (2020)
 • Total 43,824 Increase
 • Density 94/sq mi (36/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional district 15th

Madison County is a county in the middle part of Ohio, a state in the United States. In 2020, about 43,824 people lived there. The main town, or county seat, is London.

The county got its name from James Madison, who was a President of the United States. Madison County was officially started on March 1, 1810. It is also part of the larger Columbus, OH Metropolitan Statistical Area.

Exploring Madison County's Past

In 1850, Madison County was mostly a farming area. It had 24 churches and one newspaper. The total number of people living there was 10,015. The public schools taught 3,838 students.

Farmers in the county grew a lot of crops. That year, they produced over 726,000 bushels of corn. They also harvested more than 19,000 tons of hay. Animals in the county produced over 120,000 pounds of wool and nearly 129,000 pounds of butter. By 1900, the county's population had grown to 20,590 people.

Today, Madison County is home to important training centers. These include the Ohio Peace Officer Training Academy. This is where police officers in Ohio get their training. The Ohio Bureau of Criminal Identification & Investigation is also located here.

Understanding Madison County's Land

According to the U.S. Census Bureau, Madison County covers about 467 square miles. Most of this area, about 466 square miles, is land. A small part, about 0.8 square miles, is water.

Neighboring Counties Around Madison

Madison County shares its borders with several other counties.

Main Roads and Highways

Several important roads run through Madison County. These highways help people travel across the county and to other parts of Ohio.

  • I-70
  • I-71
  • US 40
  • US 42
  • SR 29
  • SR 38
  • SR 41
  • SR 56
  • SR 142
  • SR 161
  • SR 187
  • SR 323
  • SR 665

People and Population in Madison County

The number of people living in Madison County has changed over time. Here is how the population has grown since 1810.

Historical population
Census Pop. %±
1810 1,603 —
1820 4,799 199.4%
1830 6,190 29.0%
1840 9,025 45.8%
1850 10,015 11.0%
1860 13,015 30.0%
1870 15,633 20.1%
1880 20,129 28.8%
1890 20,057 −0.4%
1900 20,590 2.7%
1910 19,902 −3.3%
1920 19,662 −1.2%
1930 20,253 3.0%
1940 21,811 7.7%
1950 22,300 2.2%
1960 26,454 18.6%
1970 28,318 7.0%
1980 33,004 16.5%
1990 37,068 12.3%
2000 40,213 8.5%
2010 43,435 8.0%
2020 43,824 0.9%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2020

Population Details from 2010

In 2010, there were 43,435 people living in Madison County. There were 14,734 households, which are groups of people living together. About 10,580 of these were families.

Most people in the county were white (90.6%). About 6.6% were black or African American. Other groups made up smaller parts of the population. About 1.4% of the people were of Hispanic or Latino background.

The average age in the county was about 39.1 years old. About 34.1% of households had children under 18 living with them. The average household had 2.59 people.

The average income for a household was about $50,533. For families, it was about $63,397. About 11.7% of the population lived below the poverty line. This included 16.1% of those under 18.

Politics and Voting in Madison County

Madison County usually votes for the Republican Party in presidential elections. Only two Democratic presidents have won the county. These were Franklin D. Roosevelt in 1932 and 1936, and Lyndon B. Johnson in 1964.

United States presidential election results for Madison County, Ohio
Year Republican Democratic Third party
No.  % No.  % No.  %
2024 14,737 70.98% 5,713 27.52% 312 1.50%
2020 13,835 69.57% 5,698 28.65% 354 1.78%
2016 11,631 66.76% 4,779 27.43% 1,011 5.80%
2012 10,342 58.91% 6,845 38.99% 370 2.11%
2008 10,606 60.57% 6,532 37.30% 372 2.12%
2004 11,117 63.90% 6,203 35.65% 78 0.45%
2000 8,892 60.63% 5,287 36.05% 488 3.33%
1996 6,871 51.20% 5,072 37.79% 1,478 11.01%
1992 6,865 48.79% 3,998 28.41% 3,208 22.80%
1988 8,303 70.26% 3,421 28.95% 93 0.79%
1984 8,979 74.91% 2,928 24.43% 80 0.67%
1980 7,166 63.14% 3,565 31.41% 619 5.45%
1976 7,074 58.17% 4,885 40.17% 202 1.66%
1972 8,372 75.67% 2,484 22.45% 208 1.88%
1968 5,882 57.15% 2,780 27.01% 1,631 15.85%
1964 4,945 48.44% 5,264 51.56% 0 0.00%
1960 7,256 66.37% 3,677 33.63% 0 0.00%
1956 6,483 69.28% 2,875 30.72% 0 0.00%
1952 6,279 66.40% 3,177 33.60% 0 0.00%
1948 4,730 58.44% 3,356 41.46% 8 0.10%
1944 5,546 62.17% 3,374 37.83% 0 0.00%
1940 5,904 57.35% 4,390 42.65% 0 0.00%
1936 4,843 47.81% 5,184 51.17% 103 1.02%
1932 4,631 49.13% 4,722 50.10% 73 0.77%
1928 5,522 68.13% 2,527 31.18% 56 0.69%
1924 4,829 61.97% 2,685 34.46% 278 3.57%
1920 5,397 58.76% 3,769 41.03% 19 0.21%
1916 2,809 50.92% 2,667 48.35% 40 0.73%
1912 2,271 43.37% 2,172 41.48% 793 15.15%
1908 3,051 54.93% 2,430 43.75% 73 1.31%
1904 3,164 59.07% 2,103 39.26% 89 1.66%
1900 3,197 55.58% 2,493 43.34% 62 1.08%
1896 3,308 54.01% 2,751 44.91% 66 1.08%
1892 2,594 50.93% 2,292 45.00% 207 4.06%
1888 2,708 50.71% 2,376 44.49% 256 4.79%
1884 2,706 52.28% 2,391 46.19% 79 1.53%
1880 2,680 53.09% 2,305 45.66% 63 1.25%
1876 2,191 50.24% 2,145 49.19% 25 0.57%
1872 1,934 54.25% 1,625 45.58% 6 0.17%
1868 1,682 52.04% 1,550 47.96% 0 0.00%
1864 1,688 58.94% 1,176 41.06% 0 0.00%
1860 1,417 53.03% 1,016 38.02% 239 8.94%
1856 997 46.85% 656 30.83% 475 22.32%
United States Senate election results for Madison County, Ohio1
Year Republican Democratic Third party(ies)
No.  % No.  % No.  %
2024 13,347 65.24% 6,322 30.90% 789 3.86%

Learning in Madison County

Schools for Young People

Several school districts serve the students of Madison County. These districts help provide education from kindergarten through high school.

  • Fairbanks Local School District
  • Jefferson Local School District
  • Jonathan Alder Local School District
  • London City School District
  • Madison-Plains Local School District
  • Mechanicsburg Exempted Village School District

Local Libraries for Reading and Research

The following libraries are important places for learning and reading in Madison County. They offer books, computers, and other resources to the community.

Communities of Madison County

Map of Madison County Ohio With Municipal and Township Labels
Map of Madison County, Ohio with Municipal and Township Labels

Cities in the County

  • London (This is the main county seat)
  • Dublin (Only a part of Dublin is in Madison County)

Villages in the County

Townships in the County

Townships are smaller areas of land within a county.

  • Canaan
  • Darby
  • Deer Creek
  • Fairfield
  • Jefferson
  • Monroe
  • Oak Run
  • Paint
  • Pike
  • Pleasant
  • Range
  • Somerford
  • Stokes
  • Union

Census-Designated Places

These are areas that are like towns but are not officially incorporated as cities or villages.

Unincorporated Communities

These are small communities that do not have their own local government.

More to Explore

See also

Kids robot.svg In Spanish: Condado de Madison (Ohio) para niños

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