Where Does The Last Name Riass Come From? ^{nationality or country of origin}

The last name Riass (Russian: Риасс) is found most frequently in Russia. It may be found as:. For other potential spellings of Riass click here.

How Common Is The Last Name Riass? ^{popularity and diffusion}

The surname Riass is the 6,063,924^th most commonly occurring last name on earth It is held by around 1 in 728,754,592 people. The surname Riass occurs predominantly in Asia, where 80 percent of Riass reside; 80 percent reside in North Asia and 80 percent reside in Slavic North Asia.

The last name is most frequently held in Russia, where it is borne by 9 people, or 1 in 16,013,673. In Russia Riass is primarily concentrated in: Sverdlovsk Oblast, where 89 percent live and Saint Petersburg, where 11 percent live. Barring Russia this last name occurs in one country. It also occurs in The United States, where 10 percent live.

Riass Family Population Trend ^{historical fluctuation}

The incidence of Riass has changed through the years. In The United States the number of people bearing the Riass last name decreased 67 percent between 1880 and 2014.