If you're looking for concrete evidence of the ever widening gap between America's rich and poor, here's a hint: check your area code.
Now more than ever, American neighborhoods tend to be segregated by income, according to a recent study Cornell's Kendra Bischoff and Stanford's Sean F. Reardon.
That means the rich are living near the rich and the poor are packed together in large sections of the country's biggest metropolitan areas, and that creates a vicious cycle for poor families.
The latest findings confirm a Pew Research report from last year, which mapped the income segregation in America's biggest cities.