I'm on F1 visa and just got married to a US citizen, I'm looking forward to file green card papers..is there something like some states(MD or Kentucky) have the fastest processing time, what is the normal time limit from filing to the interview and receiving green card?
Follow the instructions on the form. Place of filing in immigration matters follows your residence. It is not open to choice. USCIS processing times should be here: http://www.immigration.com/processing-times-and-status-check