Jefferson County has a history rich in people, events and progress. Explore the park and recreation districts, arts and music, museums and attractions that Jefferson County has to offer.

Jefferson County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 582,910, [1] making it the fourth-most populous county in Colorado. The county seat is Golden, [2] and the most populous city is Lakewood. Jefferson County is included in the Denver-Aurora-Lakewood, CO Metropolitan Statistical Area.

Jefferson County, aka JeffCo, is located along the Front Range of the Rocky Mountains, adjacent to Denver. As of 2020, the population was 582,910, making Jefferson one of the most populous counties in Colorado. The county seat is Golden, and the most populous city is Lakewood.

Jefferson County, commonly referred to as “Jeffco,” is named after former president Thomas Jefferson and covers 774 square miles in central Colorado west of Denver.

303-271-6511. 100 Jefferson County Parkway Golden, CO 80419 United States. Alerts. Emergency Response Guide; Emergency Management

303-271-6511. Address. 100 Jefferson County Parkway Golden, CO 80419 United States

Jul 1, 2024 · Jefferson County, Colorado. QuickFacts provides statistics for all states and counties. Also for cities and towns with a population of 5,000 or more.

Jefferson County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 582,910, making it the fourth-most populous county...

Jefferson County, Colorado has 764.4 square miles of land area and is the 50th largest county in Colorado by total area. Jefferson County, Colorado is bordered by Teller County, Colorado, Broomfield County, Colorado, Douglas County, Colorado, Gilpin County, Colorado, Clear Creek County, Colorado, Denver County, Colorado, Boulder County ...

Jan 28, 2025 · Are you a Colorado driver? Visit the Jefferson County Motor Vehicle page for information on vehicle registration, titling, emissions, fees, and more. Jefferson County Community Resources . Making ends meet can be hard and everyone could use some help from time to time. You or your family may not have needed support before but times have changed.