Altenstadt was part of the limes, the former border of the Roman Empire, that passes through the town.

He became Professor at the Friedrich-Wilhelms-Universität Berlin for Inner Medicine and one of the most prominent German Physician of first half of the 20th century.

Kellner recorded the misdeeds of the Nazis in a ten-volume diary which was on display in 2005 at the George Bush Presidential Library.

[3] The Lutheran missionary Georg Heinrich Schwarz was born in Höchst an der Nidder in 1868.

[4] On 5 September 2019, Stefan Jagsch from the extreme-right NPD was elected the Mayor of the Waldsiedlung unopposed, which led to irritation in other parties at national level.