6.1 percent of the county's population), followed by Los Angeles and Santa Clara counties; the three counties accounted for 26 percent of the Vietnamese immigrant population in the United States. Many Vietnamese American businesses exist in the Little Saigon of Westminster and Garden Grove, where Vietnamese Americans make up 40.2 and 27.7 percent of the population respectively. About 41 percent of the Vietnamese immigrant population lives in five major metropolitan areas: in descending order, Los Angeles, San Jose, Houston, San Francisco and Dallas-Fort Worth. The Vietnamese immigration pattern has shifted to other cities, including Denver, Boston, Chicago, Oklahoma (Oklahoma City and Tulsa in particular) and Oregon (Portland in particular). Vietnamese Americans are more likely to be Christians than the Vietnamese in Vietnam. Christians (mainly Roman Catholics) make up about six percent of Vietnam's population and about 23 percent of the Vietnamese American population. Due to hostility between Communists and Catholics in Vietnam, many Catholics fled the country after the Communist takeover, and many Catholic Churches had sponsored them to America. Economics In 2019, the median household income for all Vietnamese Americans was $69,800. Broken down by birth, the income was $82,400 for U.S.-born and $66,000 for foreign-born Vietnamese-Americans. In 2019, Pew Research Center published a study stating that 12% of Vietnamese Americans lived under the poverty line, which was higher than the average for all Asian Americans. Employment The U.S. Census Bureau reports in 2016 among working Vietnamese Americans (civilian employed population 16 years and over): 32.9% had management, business, science, and arts occupations; 30.9% had service occupations; 17.0% had sales and office occupations, 4.3% had reported natural resources, construction, and maintenance occupations; and 15% had natural resources, construction, and maintenance occupations. Though Vietnamese immigration has continued at a fairly steady pace since the 1980s, the pathway to immigration for Vietnamese today has shifted entirely. As opposed to the earlier history of Vietnamese migration that stemmed predominantly from refugees, an overwhelming majority of Vietnamese are now granted LPR on the basis of family sponsored preferences or by way of immediate relatives to U.S. citizens, at 53% and 44% respectively. This marks a complete about face, as in 1982, 99% of Vietnamese who received green cards obtained them on humanitarian grounds, while in 2019 only 1% of Vietnamese who received LPR status did so through this channel. Education In 2019, 55% of U.S.-born Vietnamese Americans had attained a bachelor's degree or