Located in Adams County, Colorado, Thornton was established in 1953. One of Denver's first planned suburbs. Water pipeline highlighted western water wars.
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Founded1953|Population148,938|Peak148,938(2024)|CountyAdams County
Top 10 Most Important Events for Thornton, Colorado
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1942Military Presence: Military installations became a major part of Thornton's identity and economy.
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1953Planned Community Founded: Developer Sam Hoffman creates suburb north of Denver.
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2005Water Pipeline Controversy: 70-mile pipeline sparks water rights debate.
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2020N Line Rail Opens: Commuter rail to Denver Union Station.
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2023CO's 6th Largest City: Approaching 150,000.
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Complete Historical Timeline
1942Government
Military Presence
1953Business
Planned Community Founded
2005Politics
Water Pipeline Controversy
2020Transport
N Line Rail Opens
2023Business
CO's 6th Largest City
Did You Know?
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One of Denver's first planned suburbs.
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Water pipeline highlighted western water wars.
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CO's 6th largest city.
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Thornton is located in Adams County, Colorado.
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Thornton was founded in 1953.
Famous People from Thornton, Colorado
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Mike Manning
Actor, Model · Born Apr 12, 1987 · Age 38
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