Located in Boulder County, Colorado, Longmont was established in 1871. Named for its views of Longs Peak, the iconic 14,259-foot mountain. Left Hand Brewing Company, one of Colorado's best craft breweries, is in Longmont.
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Founded1871|Population103,000|Peak103,000(2024)|CountyBoulder County
Top 10 Most Important Events for Longmont, Colorado
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1871Founded: Agricultural colony with views of Longs Peak.
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1942Military Presence: Military installations became a major part of Longmont's identity and economy.
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1990Tech Companies Arrive: Seagate, Amgen and others establish facilities.
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2013Major Flooding: 1000-year rain event causes severe flooding.
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2023Passes 100K: Boulder County's 2nd city crosses six figures.
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Complete Historical Timeline
1871Culture
Founded
1942Government
Military Presence
1990Business
Tech Companies Arrive
2013Disaster
Major Flooding
2023Business
Passes 100K
Did You Know?
1
Named for its views of Longs Peak, the iconic 14,259-foot mountain.
2
Left Hand Brewing Company, one of Colorado's best craft breweries, is in Longmont.
3
The 2013 floods caused over $2 billion in damage across the Front Range.
4
Longmont is located in Boulder County, Colorado.
5
Longmont was founded in 1871.
Famous People from Longmont, Colorado
KS
Kristen Schaal
Screenwriter, Actor · Born Jan 24, 1978 · Age 48
VB
Vance D. Brand
Astronaut, Military Officer · Born May 9, 1931 · Age 94
JR
Jack Reynor
Actor, Film Actor · Born Jan 23, 1992 · Age 34
KI
Kylie Ireland
Pornographic Actor, Film Director · Born May 26, 1970 · Age 55
FS
Fred Stone
Actor, Stage Actor · Born Aug 19, 1873 · Died Mar 6, 1959 (age 85)