It is thanks to a deficit in the budget of the Principality of Brunswick-Wolfenbüttel that poll tax lists with precise details of the principality's population in 1678 have survived. Duke Rudolf August reorganized the state coffers by levying an extraordinary tax and had all taxable subjects recorded for this purpose.
Taxable persons were those who had already reached the age of twelve and were not members of the clergy or the military. The 108 taxable inhabitants of Üfingen paid just under 40 thalers into the princely war chest. In neighboring Nortenhof, which has only belonged to Üfingen since 1924, there were 104 taxpayers.
The cultivation of sugar beet brought about a change in agriculture in the 19th century. It was thanks to the entrepreneurial vision of estate owner Carl Franz Leonhard Hoyer von Rotenheim that a sugar factory was built in Üfingen as early as 1849. Shareholders from Üfingen, Sauingen, Bleckenstedt, Beddingen and Hallendorf held shares in the sugar factory and delivered beet for processing in the fall. In 1926, the sugar beet was even given its own rail connection for transportation. The factory in Üfingen was attached to the sugar factory in Broitzem and was only used as a central collection point.
A narrow-gauge railroad was built from Üfingen via Groß Gleidingen and Timmerlah to Broitzem in order to transport the beet to Broitzem for processing. For a good 30 years, until the sugar factory in Broitzem also ceased operations after the 1958 campaign, the sugar beet was transported for processing on the Veilchenbahn, which presumably got its name from the violets growing on the railroad embankment.
The construction of the branch canal in 1938 brought radical changes to the cultural landscape around Üfingen, which was intended to enable the transportation of ore and coal to the smelter by water.
Two double lock systems - at Üfingen and Wedtlenstedt (district of Peine) - were required to overcome the difference in height to the Mittelland Canal. The chambers of the Üfingen lock are over 200 meters long and hold several tens of thousands of cubic meters of water. The ships overcome a height difference of nine meters at the Üfingen lock. Today, the canal is not only used for water management, but also as a local recreation area.
Whether sport, music or socializing - the varied club landscape in Üfingen offers a wide range of activities and ensures a good community in the canal village.