Aha, I found it! I was right it was  Michigan. 

http://www.tadl.org/stats/
http://www.tadl.org/about/stats

I can't remember hte name of the code4libber responsible, but they were on the #code4lib IRC channel, they are around in our community! 

________________________________________
From: Jonathan Rochkind
Sent: Wednesday, June 05, 2013 5:45 PM
To: Code for Libraries
Subject: RE: [CODE4LIB] Visualizing (public) library statistics

I recently saw a great example of exactly what you're talking about... but now I can't find it!

I think it might have been a public library somewhere in michigan, but I could be misremembering that. It was pointed out on the #code4lib IRC channel, whoever was responsible for it was on channel at the time, and someone congratulated them because their public statistics dashboard had been featured on some web page somewhere.

Bah, this probably isn't too helpful! How frustrating, I'm certain I saw an example of exactly what you are are asking for! (I encouraged them to submit to the code4lib journal on it, because I knew people would want to know about it!)
________________________________________
From: Code for Libraries [[log in to unmask]] on behalf of Cab Vinton [[log in to unmask]]
Sent: Wednesday, June 05, 2013 3:40 PM
To: [log in to unmask]
Subject: [CODE4LIB] Visualizing (public) library statistics

Come budget time, I invariably find myself working with the most
recent compilation of public library statistics put out by our State
Library -- comparing our library to peer institutions along a variety
of measures (support per capita, circulation per capita, staffing
levels, etc.) so I can make the best possible case for increasing/
maintaining our funding.

The raw data is in a Excel spreadsheet --
http://www.nh.gov/nhsl/lds/public_library_stats.html -- so this seems
ripe for mashing up, data visualization, online charting, etc.

Does anyone know of any examples where these types of library stats
have been made available online in a way that meets my goals of being
user-friendly, visually informative/ clear, and just plain cool?

If not, examples from the non-library world and/ or pointers to
dashboards of note would be equally welcome, particularly if there's
an indication of how things work on the back end.

Cheers,

Cab Vinton, Director
Sanbornton Public Library
Sanbornton, NH