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

The surname Riass (Russian: Риасс) is most common in Russia. It can also be rendered as a variant:. For other possible spellings of this last name click here.

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

The last name is the 6,063,924^th most prevalent surname globally It is held by approximately 1 in 728,754,592 people. The last name occurs mostly in Asia, where 80 percent of Riass are found; 80 percent are found in North Asia and 80 percent are found in Slavic North Asia.

The last name Riass is most prevalent in Russia, where it is held by 9 people, or 1 in 16,013,673. In Russia it is primarily found in: Sverdlovsk Oblast, where 89 percent are found and Saint Petersburg, where 11 percent are found. Not including Russia Riass is found in one country. It is also common in The United States, where 10 percent are found.

Riass Family Population Trend ^{historical fluctuation}

The prevalency of Riass has changed over time. In The United States the number of people who held the Riass last name fell 67 percent between 1880 and 2014.