C-a.zip

: For those interested in the housing market, KCRA tracks ZIP codes with the fastest-rising home values, such as Groveland (95321) and Tracy (93591).

The U.S. Postal Service explains the logic behind the numbers: C-A.zip

: Represents a broad geographic area (0 for the East Coast, 9 for the West Coast). : For those interested in the housing market,