Recommended Facebook Photo Resolution

Optimizing for Facebook Albums says:

highest quality JPEG, 604 pixels maximum dimension, 200+ DPI

Also as per Facebook pictures resolution:

30 KB and the resolution of the picture is about 604px × 402px

Maximum Picture Size says:

500 x 655. 498 wide x 604px is max i use. I've had pics cropped if i try wider

Another programmer in his Image Uploader for FB project mentions that:

the maximum Facebook image size, 604x604, which are about 100-150 kilobytes