Wis. Stat. § 61.19
At the annual spring election in each village in odd-numbered years, except as otherwise provided herein, there shall be chosen: A president, a clerk, a treasurer, an assessor if election of the assessor is provided and a constable. In villages in counties having a population of 750,000 or more, the officers named shall be elected for a term of 2 years on the first Tuesday of April of each even-numbered year. Any other officers shall be appointed annually by the village board at their first meeting after the first Tuesday in April unless the board otherwise provides. No person not a resident elector in such village shall be elected to any office therein. The village clerk may appoint a deputy clerk for whom the clerk shall be responsible, and who shall take and file the oath of office, and in case of the absence, sickness or other disability of the clerk, may perform the clerk's duties and receive the same compensation unless the village board appoints a person to act as such clerk. No assessor shall be elected or appointed if the village has come within the jurisdiction of a county assessor under s. 70.99 .
Wis. Stat. § 61.19