Cognomen Jylha (Jylha 
) , in all the world, is quite a rare surname. The family name Jylha is characteristic of Northern Europe, particularly Finland, where it is quite a common surname, Estonia, where it is quite a rare surname, and Sweden, where it is a rare surname. Measured by absolute frequency, it is commonest in Finland, the United States, and Canada.
Mr, Raine, Dever, David, Jacob, James, Jamie, Jason, Tonya, Terry, Kayla, Harri, Sharon, Autumn, Cheryl, Brenda, Robert, Deanna, Dakota, Jeremy, Nicole, Martin, Edward, Betty, Chris, Ms, Al, Sam, Ari, Kht, Jon, Mark, Matt, Alan, Cilla, Dave, Jani, John, Eric, Wade, Matti, Megan, Minna, Sarah, Aaron, Geri, and Melinda