The Devils ranked 74th out of 122 professional teams in the 4 major sports according to ESPN Mag's annual franchise rankings. Those rankings can be found here.
We also managed to be 22nd our of the 30 NHL teams and those are rankings that can be found here.
The Devils individual rankings broken down by category can be found here.
And lastly, a more user-friendly version of the information can be found in tableau form here, although it is not up-to-date. But for historical perspective you can peruse the 2003-2014 rankings there.