According to the research of the German linguist Wolfgang Klein, there were 5.328.000 words in the German language between 1994 and 2004. In Duden® Spelling Dictionary there are 135.000 keywords. The ten-volume "Große Wörterbuch der deutschen Sprache" from the Duden Publishing House includes 200.000 keywords. The Leo online dictionary has 801.277 entries.

In view of the enormity of the above-referenced numbers, how large should my German vocabulary be to understand major German newspapers?

P.S.: I’m re-asking the question after consulting about doing so on German Language meta. I will also be answering my own question below.

According to the research of the German linguist Wolfgang Klein, there were 5.328.000 words in the German language between 1994 and 2004. In Duden® Spelling Dictionary there are 135.000 keywords. The ten-volume "Große Wörterbuch der deutschen Sprache" from the Duden Publishing House includes 200.000 keywords. The Leo online dictionary has 801.277 entries.

In view of the enormity of the above-referenced numbers, how large should my German vocabulary be to understand major German newspapers?

P.S.: I’m re-asking the question after consulting about doing so on German Language meta. I will also be answering my own question below.