Processing times

[jplench]

Hi, I live in Detroit, MI. I am filing my I-485 with I-130 since my wife is US citizen.
I have to send everything to a Chicago address. It used to be Nebraska Service center but now they want you to send everything to Chicago. Where can I find the usual processing times?

Thanks

[immihelp]

At http://www.immihelp.com/timings/processing-timings.html