Deming
A surname of uncertain origin, likely from an old personal name or regional family line rather than a clear occupational meaning.
The #6,235 most common surname in the United States (2010 Census) — about 1 in every 56,320 Americans shares it.
Etymology
The historical dictionaries you provided do not give a full derivation for Deming, and the surname appears to have been treated as an established family name rather than explained in detail. The most cautious reading is that it belongs to the broad English surname group built from an old personal name or a short pet form, but the exact source of the first element is not secure from these excerpts. Because the evidence here is only incidental mention, any specific root proposed for Deming should be treated as tentative.
History
The surname is documented in American and English-language surname lists by the 19th century, and modern U.S. usage shows it as an established but relatively uncommon name. Historical spelling variation is suggested by nearby forms such as Deming and Demming, which may reflect ordinary surname spelling fluctuation rather than separate origins. Well-known bearers include W. Edwards Deming, the American statistician and management theorist.
Origin
Regions
Variant spellings
Fun fact
W. Edwards Deming made the surname widely recognizable in the 20th century through his influence on quality control and management theory.
From the historical record
“Didding Deming Dilling Eadling”
— British Family Names: their origin and meaning (2nd ed.)