Prior to filing your petition or "Complaint for Divorce," you must have resided in Tennessee for six months, or have been a bona fide resident of Tennessee when the grounds occurred here.
For various reasons, including privacy or cost, some people wish to get divorced in a county other than where they live. You can file in another county if both parties agree to it. Some counties publish divorces in the local papers; which is something to note. However, eventually, most people pick up on the fact that you are in the process or recently divorced. One disadvantage is that if anything goes wrong–and there is much that can go wrong (alimony or support does not get paid, visitation is not working, and property was not transferred)—it is more expensive and complicated to straighten problems out if the divorce was granted in another county.