| Capital: | Golden |
|---|---|
| Origen y Formación del condado: | Created as one of the 17 original counties of the Territory of Colorado. |
| Población: | 534,543 habitantes |
| Área: | 772 sq mi |
| Localización del condado dentro de Colorado: |
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Localidades en Jefferson, Colorado
- Applewood
- Arvada
- Aspen Park
- Bow Mar
- Buffalo Creek
- Coal Creek Boulder County
- Columbine
- Conifer
- East Pleasant View
- Edgewater
- Evergreen
- Foxton
- Genesee
- Golden
- Idledale
- Indian Hills
- Ken Caryl
- Kittredge
- Lakeside
- Lakewood
- Littleton
- Morrison
- Mountain View
- Pine
- Superior
- Westminster
- West Pleasant View
- Wheat Ridge