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C-470 highway completed through Jefferson County.
Administration and Courts facility completed in Jefferson County Government Center at 100 Jefferson County Parkway.
Old 1953 Courthouse, Hall of Justice, and Assessor/Treasurer buildings sold to Colorado School of Mines.
District Attorney building completed in Jefferson County Government Center at 500 Jefferson County Parkway.
Buffalo Creek wildfire begins, destroying 12 structures and burning 12,000 acres.
Rocky Flats Plant listed on National Register of Historic Places.
Seventeen-member Russian delegation from Jefferson County's sister county, Tver Oblast, visits Jefferson County and other areas in the state.
Columbine High School massacre takes place when two students open fire in the school, killing 13 and injuring 24.
Old 1953 Courthouse demolished by Colorado School of Mines.
100 Jefferson County Parkway Golden, Colorado 80419 (303) 279-6511
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