How many people killed per day during old western times in America?

Answer 1

Except during the Civil War and the skirmishes leading up to it, not that many. (Look up "Bloody Kansas" sometime.) We think of the "Wild West" as a time of gunfights and massacres, but there are fewer than 30 gunfighters buried on Boot Hill in Tombstone, Arizona. Gunfights were rare; that's why they are the stuff of legends. (Drunken brawls killed far more people!) Indian raids on settlers were scarcely more common.

Most people died ordinary deaths of sickness and disease. The most common deaths for men were accidents, especially farm accidents; the most common death for women was probably in childbirth.

Among the native Americans, the most common cause of death was disease; native Americans, like aboriginal humans everywhere, had no immunity to European diseases like smallpox or measles or typhus.

Answer 2

excluding wars, the number was far less than the stories suggest.