20. Kings County, New York
> Monthly cost of living (family of 4): $9,707
> Median annual family income: $57,604
> Monthly childcare costs: $2,686
> Population: 2,606,852
19. Orange County, New York
> Monthly cost of living (family of 4): $9,814
> Median annual family income: $88,883
> Monthly childcare costs: $2,431
> Population: 376,242
24/7 Wall St.
18. Dutchess County, New York
> Monthly cost of living (family of 4): $9,821
> Median annual family income: $92,789
> Monthly childcare costs: $2,405
> Population: 295,905
17. Norfolk County, Massachusetts
> Monthly cost of living (family of 4): $9,870
> Median annual family income: $116,716
> Monthly childcare costs: $2,331
> Population: 691,218
16. Fairbanks North Star Borough, Alaska
> Monthly cost of living (family of 4): $9,952
> Median annual family income: $90,759
> Monthly childcare costs: $1,929
> Population: 100,150