https://www.prri.org/press-release/prri-survey-friendship-networks-of-white-americans-continue-to-be-90-white/
“The challenging news is that, despite some diversification since 2013, Americans’ close friendship networks remain predominantly homogeneous and insular—composed of people of the same religious, racial or ethnic, or partisan background. But the impact of just one person of a different background is profound, significantly increasing support for the ideals of a multiracial, multi-religious democracy,” said Robert P. Jones, Ph.D., PRRI founder and CEO. “In a time of unprecedented demographic and cultural change, it is clear that we need more institutions helping us bridge the divides.”
The composition and homogeneity of Americans’ friendship networks is strongly correlated with their views on questions about American identity, pluralism, Christian nationalism, and the changing demographics of the country.
The homogeneity of white Americans’ friendship networks varies by political and religious affiliation and age. Nearly three in four white Republicans (73%) report all-white friendship networks, compared to 66% of white independents and 66% of white Democrats. White Americans between the ages of 18–29 are notably less likely than older age groups to report all-white friendship networks (54%, compared to two-thirds or more among all other age groups).
White Christian groups, including white evangelical Protestants (71%), white mainline Protestants (71%), and white Catholics (73%), are more likely to report all-white friendship networks than white Americans who belong to non-Christian religions (62%) or are religiously unaffiliated (57%). However, there is no significant variation in the racial homogeneity of white Americans’ friendship networks based on education levels (college, 68%; non-college, 66%)."