| Ex. MT-085 | County COVID-19 emergency declaration of March 13, 2020 (rescinded July 2021) and county public health rules (masks; gathering limits) tightened January 2021 and no longer enforced after HB 257 (May 2021)Lewis and Clark County COVID-19 emergency declaration and public health rules | Lewis and Clark County Commissioners; Lewis and Clark City-County Board of Health and Health Officer | Lewis and Clark County (Helena), MontanaCounty | Mar. 13, 2020 | 2020 Q22020 Q32020 Q42021 Q12021 Q22021 Q3 | Emergency declarationGathering capFace-covering requirement | Confirmed from a secondary source | |
| Ex. MT-064 | Order of Health Officer HO-2020-002, Quarantine and IsolationOrder of Health Officer HO-2020-002, Quarantine and Isolation, April 7, 2020 | Matt Kelley, Health Officer, Gallatin City-County Health Department | Gallatin County, MontanaCounty | Apr. 7, 2020 | 2020 Q22020 Q32020 Q42021 Q1 | Quarantine and isolation | Primary source read | |
| Ex. MT-066 | Emergency Local Health Rule Relating to COVID-19, EHR-2020-002, Quarantine and IsolationEmergency Local Health Rule Relating to COVID-19, EHR-2020-002, Quarantine and Isolation | Gallatin City-County Board of Health | Gallatin County, MontanaCounty | Apr. 15, 2020 | 2020 Q22020 Q32020 Q42021 Q1 | Quarantine and isolation | Primary source read | |
| Ex. MT-068 | Emergency Local Health Rule Relating to COVID-19, EHR-2020-003, Phased Reopening: Phase OneEmergency Local Health Rule Relating to COVID-19, EHR-2020-003, Phased Reopening: Phase One | Gallatin City-County Board of Health (Becky Franks, Chair) | Gallatin County, MontanaCounty | May 1, 2020 | 2020 Q22020 Q3 | Business closureCapacity limitGathering capWorkplace rules | Primary source read | |
| Ex. MT-069 | Order of Health Officer HO-2020-003, Phased Reopening: Phase OneOrder of Health Officer HO-2020-003, Phased Reopening: Phase One | Matt Kelley, Health Officer, Gallatin City-County Health Department | Gallatin County, MontanaCounty | May 1, 2020 | 2020 Q22020 Q3 | Business closureCapacity limitGathering capWorkplace rules | Primary source read | |
| Ex. MT-045 | Order of Health Officer July 3, 2020 (restricting visitors to senior care facilities)Order of Health Officer July 3, 2020 | John Felton, Health Officer for City-County of Yellowstone | Yellowstone County, MontanaCounty | July 3, 2020 | 2020 Q32020 Q4 | Health care orders | Primary source read | |
| Ex. MT-079 | Countywide face covering rule (masks in all indoor public spaces and businesses; employers to enforce)Missoula City-County Board of Health mask rule, adopted and effective July 9, 2020 | Missoula City-County Board of Health; Ellen Leahy, Health Officer | Missoula County, MontanaCounty | July 9, 2020 | 2020 Q32020 Q42021 Q12021 Q2 | Face-covering requirementWorkplace rules | Confirmed from a secondary source | |
| Ex. MT-076 | Emergency face covering rule (countywide mask mandate), adopted July 2020; extended Jan. 20, 2021 (to Apr. 20, 2021) and April 2021 (to May 27, 2021); enforcement lifted by the Health Officer May 14, 2021Gallatin City-County Board of Health local face covering emergency rule | Gallatin City-County Board of Health; Matt Kelley, Health Officer | Gallatin County, MontanaCounty | July 17, 2020 | 2020 Q32020 Q42021 Q12021 Q2 | Face-covering requirementWorkplace rules | Confirmed from a secondary source | |
| Ex. MT-046 | Order of Health Officer August 18, 2020 (school-sanctioned sports and activities)Order of Health Officer August 18, 2020 | John Felton, Health Officer for City-County of Yellowstone | Yellowstone County, MontanaCounty | Aug. 18, 2020 | 2020 Q3 | Gathering capFace-covering requirementSchools and child careEvents and venues | Primary source read | |
| Ex. MT-047 | Order of Health Officer September 3, 2020 (rescinding the Aug. 18 order; each County school to maintain a COVID-19 Plan)Order of Health Officer September 3, 2020 | John Felton, Health Officer for City-County of Yellowstone | Yellowstone County, MontanaCounty | Sept. 3, 2020 | 2020 Q32020 Q4 | Schools and child careEvents and venuesWorkplace rules | Primary source read | |