About 6 per one hundred thousand population. In the US it is about 36 per one hundred thousand.
2008 Murder Capital for cities is La Ceiba, Honduras with a rate of 150 per 100,000. The entire nation of Honduras also had the highest rate for countries with 58 per 100,000. The city with the most murders overall is Rio de Janeiro, Brazil. In 2008 there were 4,295 murders. Brazil itself was the country that had the most murders in absolute terms, with 50,659 killings.
a lot
400
As there are many unsolved murders this cannot be known.
Check the FBI Uniform Crime Report
15,241
Lots!
New Orleans 64 murders per 100,000 people
New Orleans with 63.6 murders per 100,000
2.7 people murdered per 100 people
In the US, about 45 murders are commited a day. So i would say about 60-100 murders in Ohio each year.