Andrus
A surname most likely derived from a personal name related to Andrew, especially in Hungarian and other European forms.
The #3,505 most common surname in the United States (2010 Census) — about 1 in every 30,278 Americans shares it.
Etymology
Andrus is generally understood as a surname formed from a given name, ultimately from Andrew. The deeper source is Greek Andreas, meaning "manly" or "masculine," which spread through Christian naming traditions across Europe. In some cases, Andrus may reflect a regional spelling or surname form based on an Andras/András-type personal name rather than directly from English Andrew.
History
The form appears in various European naming traditions, including Hungarian contexts noted in older surname lists. In English-speaking countries, Andrus has also functioned as a family name brought over by immigrants or adopted as an Anglicized surname form. It is less common than Andrew, Andrews, or Anderson, but follows the same broad patronymic pattern.
Origin
Regions
Variant spellings
Fun fact
The same ancient Greek name behind Andrus also gave us the very common surname Andrew(s).
From the historical record
“Esthoniau. Andras Andrus Hungarian. Andras Bandi”
— History of Christian Names