Thirty extremist organizations were active throughout Colorado in 2023 — including thirteen hate groups and seventeen anti-government groups, the SPLC reveals in its most recent annual national report.
Ten of the groups operated statewide, according to the report. Twenty others were located in sixteen different cities and counties in Colorado. The only municipalities that housed multiple active extremist organizations were Colorado Springs, with four, and Johnstown, with two.
Nationwide, there were 1,430 active extremist organizations in 2023, according to the SPLC: 595 hate groups and 835 anti-government groups. Extremist organizations were present in all fifty states, though California had the most, at 117, and Mississippi had the least, at four. The state with the most groups per capita was Wyoming.
The SPLC is a nonprofit civil rights organization that has published a national census of hate groups in the United States each year since 1990. It uses official statements/principles, leadership comments and activities of organizations to identify them as hate groups (defined as attacking or maligning an entire class of people typically for immutable characteristics) or anti-government groups (which believe the federal government is tyrannical and traffic in conspiracy theories about an illegitimate government of leftist elites).
The presence of hate groups grew dramatically in Colorado throughout the 2000s, according to the census data. The groups were at their lowest with six in 2002 but reached a high of 22 in 2018 and 2019. The number of active hate groups in the state has dwindled since that peak, falling to seventeen in 2020, eighteen in 2021, fourteen in 2022 and thirteen in 2023.
The SPLC began including anti-government groups in its census in 2022. That year, there were seventeen operating in Colorado, the same total as the state's most recent count.
Here's a rundown of the thirty extremist organizations still present in Colorado, according to the SPLC, and how that group categorizes each one:

Active hate and anti-government groups tracked in Colorado. Statewide groups are not displayed on the map.
Southern Poverty Law Center
Hate Groups
Anti-Immigrant: "Anti-immigrant hate groups are the most extreme of the hundreds of nativist and vigilante groups that have proliferated since the late 1990s, when anti-immigrant xenophobia began to rise to levels not seen in the U.S. since the 1920s."- Colorado Alliance for Immigration Reform — Lakewood
- Family Research Institute — Colorado Springs
- Generations — Elizabeth
- Mass Resistance — statewide
- The Pray in Jesus Name Project — Colorado Springs
- Scriptures for America Worldwide Ministries — Laporte
- Northern Kingdom Prophets — Pueblo
- Proud Boys — statewide
- National Socialist Resistance Front — statewide
- Asatru Folk Assembly — statewide
- Front Range Active Club/Rocky Mountain Active Club — statewide
- National Justice Party — statewide
- Patriot Front — statewide
Anti-Government Groups
Anti-Government General: "Anti-government groups are part of the anti-democratic hard-right movement. They believe the federal government is tyrannical, and they traffic in conspiracy theories about an illegitimate government of leftist elites seeking a 'New World Order.'"- Colorado Eagle Forum — Brighton
- Colorado Parents Involved in Education — statewide
- Faith Education Commerce (FEC United) — Colorado Springs
- Freedom First Society — Colorado Springs
- Moms for Liberty — chapters in Boulder, Garfield, Mesa and Weld counties
- We Are Change — chapters in Denver and Walsenburg
- American Freedom Network — Johnstown
- United Network News — Durango
- III% United Patriots — Johnstown
- Colorado State Assembly — statewide
- Team Law — Grand Junction
- The American States Assembly — statewide
- The Jefferson County Assembly — Jefferson County