By the numbers: Why Ohio matters Football is an important tradition here, home to Ohio State University's Buckeyes. And then there's the matter of politics. 69.97% -- Percentage of registered voters in Ohio who voted in the 2008 election 64% -- Percentage of Ohio workers who are "blue collar" 18 -- Number of Electoral College seats up for grabs from Ohio this election 8 -- Number of Buckeye State residents who have been elected president (CNN) -- Ohio: Home to the Rock and Roll Hall of Fame, the Wright Brothers, the Ohio State Buckeyes and birthplace of more presidents than any other state. If that doesn't put Ohio on your map, then consider it is on both presidential candidates' maps. Mitt Romney, President Barack Obama and a number of their surrogates are visiting this week. For Obama, it's the 24th time in his presidency, and for Romney, it's the 10th time this year. That's because in addition to making great contributions to America -- such as Katie Holmes, who calls Toledo home; Halle Berry, who hails from Cleveland; and LeBron James, who comes from Akron -- Ohio is also one of the biggest battleground states in presidential politics. Here's a look at the Buckeye State, by the numbers: About Ohio 11,544,951 -- The population of Ohio, according to the 2010 Census. Ohioans make up about 4% of the total U.S. population. 83.6% -- The percentage of Ohioans who are white, according to the census. 12.4% -- The percentage of Ohioans who are black. 3.2% -- The percentage of Ohioans who are Hispanic. $46,752 -- Median average income of Ohioans in 2010, according to the Kaiser Family foundation. This is below the national average of $50,022. $136,900 -- Median home price in Ohio. 26% -- Percentage of Ohioans that identify themselves as evangelical Protestants. <.5% -- Percentage of Ohioans that identify themselves as Mormon. Obama fires up crowd in Ohio Politics and elections 7.7 million -- Number of registered voters in Ohio, according the Ohio secretary of state. 69.97% -- Percentage of registered voters in Ohio who voted in the 2008 election, higher than the national average of 63%. 2 -- Number of presidential elections since 1900 in which the eventual winner lost the race in Ohio. They are John F. Kennedy in 1960 and Franklin Roosevelt in 1944. 0 -- Number of Republicans who have been elected president without winning Ohio. 18 -- Number of seats Ohio has in the House of Representatives as of 2012, the lowest number since the 1820s. 18 -- Number of Electoral College seats up for grabs this election. 34 - Combined total of times both candidates have visited Ohio. Jindal campaigns for Romney Wednesday in Ohio Economy and employment 14.7% -- Percentage of Ohio workers represented by unions in 2011, higher than the national average of 13%. 64% -- Number of Ohio workers who are "blue collar," higher than the national average of 61%. 50,625 -- As of 2012, the number of Ohioans employed by Wal-Mart, the state's largest employer. 15,800 -- The number of Ohioans employed by General Motors and Ford in 2012. Biden back to Ohio Unemployment and poverty 7.3% -- The Ohio unemployment rate in May 2012, lower than the national average of 8.2%. 2.18 million -- The number of Ohioans living in poverty in 2010, according to the Kaiser Family Foundation. 1,565,900 -- The number of uninsured Ohioans in 2010, according to the Kaiser Family Foundation 1,824,217 -- Number of Ohioans receiving food stamps in April 2012, according to the Kaiser Family Foundation. $139.87 -- Average monthly food stamp benefit, per person, for Ohioans in 2011. Jeb Bush to head to Ohio Just for fun 1803 -- The year that Ohio became a state, the first state not originally part of the 13 colonies. 1840 -- Year that Ohioans began being called "buckeyes." 7 -- Number of World Series won by Ohio teams. 8 -- Number of Ohioans who have been elected president. 3 -- Number of Ohioans who have been the speaker of the House, including current Speaker John Boehner. 1 -- Number of Ohioans who have walked on the moon; Neil Armstrong in 1969. 1 -- Number of Ohioans who have won the Nobel Peace Prize; U.S. Vice President Charles Dawes in 1925. 1 -- Number of Ohioans who have founded 24-hour cable news networks; Ted Turner born in Cincinnati in 1938.