Census data is posted for Washington state as a whole for 1930:
For the state:
{| |- | Total
population White Black American
Indian,
Eskimo,
and Aleut Asian
and
Pacific
Islander 1930 1,563,396 1,521,661 6,840 11,253 23,642 Percentage + 97.3% 0.4% 0.7% 1.5%
Reference:
http://www.census.gov/population/documentation/twps0056/tab62.pdf
|}
Generally speaking, ethnic groups that were targets of racism were opposed to it and ethnic groups that were acting in racist ways against other groups felt their bigotry to be reasonable and rational.
European is too broad a term to provide a meaningful answer, Europe comprises MANY sovereign countries all with their own ethnic history.
The population of Europe in 1930 was just over 500,000,000.
The population in Washington was 27% in 1930 starting at 24-2725.
About 16 million worldwide in 1930.
The world population in 1930 was approximately 2 billion people.
According to http://www.populstat.info/Asia/hongkonc.htm the population of Hong Kong in 1930 was 950,000
Tanja Bueltmann has written: 'Scottish ethnicity and the making of New Zealand society, 1850 to 1930' -- subject(s): Emigration and immigration, History, Scots, Ethnic relations, Foreign population
According to a chart from the Census Bureau, the population of Vermont was about 360,000 in 1930.
1850-1890 the population went from 93,000 to 1,200,000. 1890-1930 the population went from 1,200,000 to 5,700,000. 1930-1970 the population went from 5,700,000 to 20,000,000. 1970-present the population went from 20,000,000 to 37,300,000.
1870-1900 the population went from 9,000 to 93,000. 1900-1930 the population went from 93,000 to 225,000. 1930-1960 the population went from 225,000 to 330,000. 1960-present the population went from 330,000 to 560,000.
1870-1900 the population went from 25,000 to 255,000. 1900-1930 the population went from 255,000 to 700,000. 1930-1960 the population went from 700,000 to 920,000. 1960-present the population went from 920,000 to 1,200,000.