There are areas like that already. When I first arrived in this country my husband took me to an outer suburb area that was all black people. Lovely houses, people washing their cars, doing yard work, etc... and I remember being surprised because these were not the images protrayed in the media. And l told him this and he said "Oh yeah, Philly has some nice black areas".
Mount Airy (and Germantown to an extent) is another place here...stone homes, tree-lined streets... lots of black, cops lawyers, teachers, doctors firemen, small business owners, live there..middle to upper.middle class.
So those areas actually do exist
Typical Church in My Airy..
As of the 2010 Census,[7] Mount Airy has 27,035 residents, 11,934 households, and 6,636 families. 62.5% of residents are Black or African-American, 31.7% White/Caucasian, and 5.8% are from other races or from 2 or more races.
Mt. Airy is a combination of leafy park land, miles of multi-use trails, tree-lined residential communities and cobblestoned businesses.
Here is a review in Philly Mag as it being voted as one of the nicest areas in Philly..
"Many people also think of Philadelphia as crime-ridden and plagued by ethnic tension. But Mount Airy seems genuinely, peacefully integrated."
http://www.phillymag.com/property/2014/12/01/architype-mount-airy-philadelphia/#6FPkooWmdEOOtAfe.99
Everyone goes about their day, it's a nice positive, peaceful community..no one feels unwanted and everyone gets along...it's very special and l love it.
Curious, is there an area you specifically want? What do you propose?