On 1 January 1973 as part of administrative reform of Lower Saxony the district of Duderstadt was dissolved, from which Lindau was placed in Landkreis Northeim (district). Lindau also lost the status of a municipality as together with six other villages the united municipality Gemeinde Katlenburg-Lindau was created. Lindau had become part of a predominantly Lutheran area and it is reported that the bell was tolled at the (catholic) village church.
