Cottonwood County Offices ailla CLOSED Monday, July 5 in observance of the 4th of July holiday. Note: County landfill will still be open Monday, July 5. HAVE A SAFE HOLIDAY! Cottonwood County Offices ailla CLOSED Monday, July 5 in observance of the 4th of July holiday. Note: County landfill will still be open Monday, July 5. HAVE A SAFE HOLIDAY!