UFO Sightings in Colorado
3,016 UFO sightings reported in Colorado since 1931, peaking in 2020 (226 reports); most often described as light.
- Total sightings
- 3,016
- Span
- 1931–2022
- Peak year
- 2020 (226 reports)
- Dominant shape
- Light
1931–2022 · peak 2020 (226 reports)
Top cities in Colorado
Denver
1954–2022 · peak 2014 (27 reports)
Colorado Springs
1956–2022 · peak 2014 (25 reports)
Fort Collins
1963–2021 · peak 2018 (14 reports)
Boulder
1969–2021 · peak 2013 (9 reports)
Aurora
1962–2021 · peak 2016 (10 reports)
Grand Junction
1989–2022 · peak 2020 (29 reports)
Longmont
1978–2021 · peak 2013 (10 reports)
Littleton
1965–2022 · peak 2002 (7 reports)
Pueblo
1995–2021 · peak 2020 (12 reports)
Lakewood
1969–2022 · peak 2014 (7 reports)
Loveland
1988–2022 · peak 2005 (6 reports)
Arvada
1959–2021 · peak 2016 (8 reports)
Westminster
1971–2021 · peak 2013 (5 reports)
Greeley
1998–2021 · peak 2016 (11 reports)
Thornton
1997–2021 · peak 2015 (5 reports)
Englewood
2001–2020 · peak 2004 (7 reports)
Estes Park
1954–2021 · peak 2019 (12 reports)
Highlands Ranch
1998–2022 · peak 2013 (4 reports)
Golden
1975–2020 · peak 2017 (4 reports)
Broomfield
1998–2020 · peak 2016 (5 reports)
Antinito · CO, USA
Object discovered in picture.
Loveland · CO, USA
My husband called me and told me that there where lights over the mountains towards the west and I looked and saw quite a few like 5 bu
Denver · CO, USA
Is anyone else seeing this now?? I'm downtown Denver and I'm looking W above the mountains. Really high up there are lights pulsating.
Florence · CO, USA
Yellow/orange sphere hovering 20' off the ground above a neighbors yard.
Littleton · CO, USA
To fast and irregular to be man made.
Denver · CO, USA
Drone like objects with erratic flashing white, red, orange, green, and blue lights
Elizabeth · CO, USA
I sent my nephew to get my laptop from my car and when he came back in he said, "Oh, by the way, what are those lights out there?"
Colorado Springs · CO, USA
White spherical illumination that brightened, then disappeared. ((NUFORC Note: Iridium satellite flare?? PD))
Centennial · CO, USA
Eight pulsating, low altitude, reddish-orange spheres/orbs over Denver.
Aurora · CO, USA
I'm not even sure what really happened. ((NUFORC Note: We are not certain this is intended as a serious report. PD))
Golden · CO, USA
There were 7 vivid, gark green star like lights in the sky in the southwest direction. ((NUFORC Note: Stars?? PD))
Colorado Springs · CO, USA
((HOAX??)) Several diamond shapes with multiple lights moving in a coordinated fashion slowly and high in the sky.
Aurora · CO, USA
((HOAX??)) We saw a blue circle go across the sky pretty fast, and was all by itself.
Lakewood · CO, USA
These 9 objects appeared above our backyard never seen anything like that ever before, coming from experienced RC flier.
Gill · CO, USA
2 or 3 lights found over the horizon- there and then gone.
Avon/Eagle · CO, USA
Two red lights over Avon, then 3 more over Eagle, CO.
Steamboat Springs · CO, USA
Six red orange lights over tree line that made different shapes. Viewed for over an hour.
Arvada · CO, USA
Watched 4 orbs of light traveling in unison then rotated around each other. ((NUFORC Note: We suspect advertising lights. PD))
Arvada · CO, USA
Four UFOs flying in diamond pattern seen over Arvada, CO.
Centennial · CO, USA
Diagonal lights shift into pyramid shape and fade into the distance.
Aurora · CO, USA
5 lights moving in formation as they descend.
Lakewood · CO, USA
Inverted W craft flying low from northwest to southeast, followed by 5 bright lights forming into a circle which dropped out of sight.
Aurora · CO, USA
Chevron-shaped object flyinf south over Aurora, Colorado.
Boulder · CO, USA
Green Orb leaving slime trail over Boulder, Colorado 2015.
Denver · CO, USA
Facing due N on Crestline ave in Denver; witnessed what I originally believed to be an aircraft. ((NUFORC Note: Parachutists?? PD)