Fond du Lac County holiday hours In observance of the Christmas and New Year’s holidays and in accordance with Fond du Lac County’s holiday schedule, the county offices in the City/County Government Center, the Department of Social Services, the Veterans Service Office and the Department of Community Programs will be closed all day on December 24 and 25 and January 1, 2016. On December 31, the offices in the City/County Government Center will close at noon. Other offices listed above will be closed all day. The Sheriff’s Office Lobby Window will be closed all day December 24 and 25, and January 1, 2016 and will close at 11:00 a.m. on December 31. The Highway Department will be closed all day on December 25 and January 1, 2016. The UW-Extension Office will be closed all day on December 24, 25, and 31, and January 1, 2016.