The four USCIS service centers process the same types of applications, yet some centers are faster than others. The same is true of the district offices. Is there a way to determine which offices process applications for citizenship (N-400) the fastest. The USCIS web site lists the same processing dates for every office.
Thanks.

Check this link, it looks like they are all processing applications received mid January but some are a lot slower.

Hope this helps

https://www.visapro.com/INS-Processing-Times.asp

Thanks for the site. That is one I haven't seen before. I like the fact that you don't have to look up the offices one at a time. Too bad they all show the same dates.