Wis. Stat. § 767.301: Residence requirements.

No action to affirm marriage or for annulment under s. 767.001 (1) (a) or (b) may be brought unless at least one of the parties has been a bona fide resident of the county in which the action is brought for not less than 30 days next preceding the commencement of the action, or unless the marriage has been contracted within this state within one year prior to the commencement of the action. No action for divorce or legal separation under s. 767.001 (1) (c) or (d) may be brought unless at least one of the parties has been a bona fide resident of the county in which the action is brought for not less than 30 days next preceding the commencement of the action. No action for divorce under s. 767.001 (1) (c) may be brought unless at least one of the parties has been a bona fide resident of this state for not less than 6 months next preceding the commencement of the action.