|Wikimedia Commons has media related to 1804 establishments.|
This category is for organizations, places or other things founded or established in the year 1804.
This category has the following 11 subcategories, out of 11 total.
- Buildings and structures completed in 1804 (12 C, 8 P)
- Cabinets established in 1804 (2 P)
- Noble titles created in 1804 (5 P)
- Organizations established in 1804 (6 C, 3 P)