Doctor density varies by specialty and location. Ohio has 165 practicing allergists & immunologists. Broken out by city, allergy & immunology doctor density in Akron is 4, in Alliance is 1, in Athens is 1, in Beachwood is 6, in Beavercreek is 4, in Bellaire is 1, in Boardman is 1, in Burton is 1, in Canfield is 1, in Canton is 2, in Carrollton is 1, in Centerville is 3, in Cincinnati is 35, in Cleveland is 23, in Cleveland Heights is 1, in Columbus is 27, in Dayton is 4, in Defiance is 1, in Dover is 1, in Dublin is 6, in East Liverpool is 1, in Elyria is 1, in Fairlawn is 2, in Fairview Park is 1, in Findlay is 5, in Gahanna is 2, in Gallipolis is 1, in Hamilton is 1, in Hilliard is 3, in Hillsboro is 2, in Independence is 2, in Kenton is 1, in Kettering is 3, in Lakewood is 1, in Lancaster is 3, in Lima is 3, in Lodi is 1, in Lorain is 4, in Mansfield is 7, in Marietta is 2, in Marion is 1, in Marysville is 2, in Mason is 4, in Maumee is 2, in Mayfield Heights is 1, in Medina is 1, in Mentor is 2, in Middleburg Heights is 1, in Middletown is 1, in Milford is 1, in Newark is 4, in North Canton is 1, in North Olmsted is 1, in Oregon is 3, in Oxford is 1, in Parma is 5, in Poland is 1, in Proctorville is 1, in Ravenna is 1, in Reynoldsburg is 1, in Saint Clairsville is 1, in Sandusky is 1, in Sidney is 2, in Solon is 2, in South Euclid is 1, in Springfield is 2, in Steubenville is 1, in Strongsville is 2, in Sylvania is 1, in Toledo is 12, in Upper Sandusky is 1, in Wadsworth is 2, in Wapakoneta is 1, in Warren is 2, in Washington Court House is 1, in Westerville is 2, in Westlake is 3, in Willard is 1, in Willoughby is 1, in Wilmington is 1, in Wooster is 4, in Wright Patterson Afb is 1, in Youngstown is 6, and in Zanesville is 5.

Ohio’s northern border is Lake Erie, one of the Great Lakes. Columbus is the capital city, and the population of Ohio is 11,464,042. Ohio is the birthplace of seven presidents, all born here before 1900. In 1803, President Jefferson approved Ohio’s boundaries and constitution, but congress did not formally admit Ohio as a state. Ohio was not officially accepted into the United States until retroactively in 1953 by President Eisenhower. Visitors drive through covered bridges, see earthen effigy mounds and other historical monuments, or go hiking, fishing, boating or golfing in Ohio’s state parks. The Goodyear Blimp in docks in Akron, the world’s largest crystal ball is in Westerville, and the SunWatch Indian Village Archaeological Park is a popular site in Dayton.

According to 2005 Census estimates, Ohio has a population of 11,464,042. Of this population, 2,685,258 are under the age of 18 and 1,522,387 are at or above the age of 65.