- Jeffco Sheriff's Office begins the early release of certain low-risk prisoners from the jail due to budget cuts.
In a fundraiser for the Evergreen Animal Protective League, Evergreen elects Whitman the Newfoundland as its first ever dog mayor. Chuk the chocolate lab is elected deputy mayor.
- Jeffco sees its first case of COVID-19 March 10 when a man in his '50s became the first in the county to test positive.
- All jury trials in the 1st Judicial District postponed to later in the year due to COVID-19.
- All Jefferson County Public Libraries close until further notice, even the book drops.
- School of Mines classes moved online for remainder of spring semester. Students living on campus told to leave.
- Jeffco Public Schools transition to remote learning due to COVID-19, as does Red Rocks Community College.
- Jefferson County Public Health issues a stay at home order.
- County offices close due to the world-wide COVID-19 (Coronavirus) pandemic. Employees required to work from home.
March 26, 2020
"Stay-at-Home" order begins. Referred to as "lockdown." All non-critical businesses close.
Grocery stores contain empty shelves. Toilet paper, paper towels, hand sanitizer and flour are impossible to find. Stores don't recover until summer.
April 26, 2020
Statewide "Safer-at-home" order issued allowing many non-critical businesses to reopen with some restrictions. Theaters and gyms remain closed. Hair and nail salons allowed to reopen at 50% capacity with restrictions.
May 25, 2020
George Floyd, an African American man, dies during a police arrest in Minneapolis, MN. Protests in response to police violence spread across the United States and internationally. Denver experiences protests, some peaceful, some causing much damage to the capitol building and stores along the 16th Street Mall. Peaceful "Black Lives Matter" groups hold gatherings in Arvada, Lakewood, Golden and Evergreen over the following few months.
June 1, 2020
Jefferson County moves to 4-day work week as employees return to work with the lifting of COVID-19 restrictions.
June 6, 2020
June 7, 2020
Residents march through the streets of Golden for a March for Black Lives.
- All concerts at Red Rocks Amphitheater cancelled for the year.
- Golden's Buffalo Bill Days canceled for the first time in history due to COVID-19.
July 16, 2020
Colorado Governor Jared Polis issues a state mask order requiring people to wear masks in public.
September 20, 2020
Arvada United Methodist Church marks its 150th anniversary.
The iconic water tower in Olde Town Arvada turns 110 years old.
October 7, 2020
Arsonists burn down the 25-yr. old gazebo in the Jeffco Courage Garden located behind the Administration and Courts Facility. The Courage Garden was created as a place for victims of crime to heal and find peace and solitude. The gazebo was built and dedicated in honor of fallen Jefferson County Sergeant Timothy Mossbrucker in 1995.
November 3, 2020
Voters elect an all Democrat Board of County Commissioners for the first time in 135 years (since 1885)
November 22, 2020
Free COVID-19 testing site opens at Jeffco Fairgrounds, offering 2,000 tests per day.
COVID vaccine distribution begins for healthcare workers, first responders and senior citizens.
December 1, 2020
Arvada celebrates its 150th anniversary of incorporation as a city.