I'm a little surprised. My block group includes a bunch of newer townhomes and a number of low rent duplexes and apartments in addition to a good number of single family homes in my neighborhood. Other than the "below$15000 NW" bin, it's a fairly even distribution between the other NW bins. The $500,000+ bin has about as many people as the $15,000 to $35,000 bin and all the other bins in between. That's a sign of a rather socioeconomically diverse area, which would describe the neighborhood well. Lots of recent immigrants, young families or couples, older retirees, professionals, blue collar workers, etc. Me and 71 other people in my block group have NW's over $500k. Not really surprising given the number of 70-80 year old retirees, a few early retirees, and small business owners. And having a paid off house here would get you to about $150k or so.
Overall, my block group has a median NW of $75,000, or 114% of the national average. This isn't surprising, but the "nice part of town" with the $500,000+ median net worths (where 90%+ of the residents fall in the $500k+ bin) is only 1.1 mile from my neighborhood of dirt cheap homes. I bet they are pissed I can walk to their neighborhood and I can shop in the stores where they shop! ;)