| 1860 | Brantner Ditch water rights were filed. It was the first irrigation ditch in the area.
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| 1862 | Hughes Stagecoach Station established. |
| 1871 | Boulder Valley Railroad completed to Brighton.
Hughes Station came into existence and the community came to be known as Hughes Station.
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| 1881 | The City of Brighton is born and named after the birthplace of the founder Daniel Carmichael's wife. |
| 1885 | First school completed. Built by A.L. Church for $1,257 and located on 1st Street. |
| 1887 | Court recognized City of Brighton. |
| 1902 | Adams County formed from a part of Arapahoe County with Brighton as temporary county seat. Carmichael residence used as first Courthouse. The basement of the house was used for a jail. The house was located on 34 S. 5th. |
| 1904 | First annual Fair was held where current City Hall building sits today.
Election for county seat was determined by Brighton winning with 1,103 votes.
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| 1913 | Scarlet Fever scare caused all public meetings to be postponed. |
| 1920 | Coldest winter and heaviest snow in seven years. 500 head of cattle died and electricity and water was off for three days. |
| 1944 | Bob Sakata starts farm in Brighton. |
| 1960 | Brighton Hospital established with 31 beds. |
| 1974 | Brighton institutes minority hiring program. |
| 1977 | Adams County Administration Building (current home to City Hall) completed. Brighton city government moves into Adams County Courthouse building which is now Historic City Hall. |
| 2006 | Brighton City Hall/Adams County Courthouse 100 years old. |
| 2009 | The former State Armory building in Brighton, built in 1921, transformed into the Armory at Brighton Cultural Center. |
| 2011 | Brighton moves into former Adams County Administration Building.
Brighton named "100 Best Communities for Young People" by America's Promise Alliance and ING.
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| 2012 | Senior Center moves to the new Eagle View Adult Recreation Center near Platte Valley Medical Center.
Brighton celebrates its 125th anniversary.
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