In general, Roman Catholic parishes tend to draw on neighborhoods. That can make for parishes pretty well uniform in income level, and other factors. It can als

In general, Roman Catholic parishes tend to draw on neighborhoods. That can make for parishes pretty well uniform in income level, and other factors. It can also make for quite diverse parishes. (Though there may be multiple language communities.) It seems to be that the Washington, DC, parishes running from about noon to about two on a clock centered on the White House tend to be be fairly diverse.