The bargaining units united by Local 66 in the Arrowhead Region of Minnesota: 

City of Duluth

City of Grand Marais

City of Hermantown, Clerical Staff

City of Rice Lake

Duluth Airport Authority

Duluth Housing and Redevelopment Authority 

ISD 700 Bus Drivers

ISD 704 Basic

ISD 704 Bus Drivers

ISD 709 Paraprofessionals

ISD 709 Bus Drivers

ISD 381 Clerical

ISD 381 Parprofessionals

Lake County, PHHS

Spirit Mountain

St. Louis County, 911 & Jail

St. Louis County, Basic

St. Loius County, Merit

WLSSD (Western Lake Superior Sanitary District)