Explore the Family Name Dahlby
The meaning of Dahlby
Norwegian and Danish: habitational name from a Norwegian farm name or Danish placename, both derived from Old Norse dalr ‘valley’ + býr ‘farmstead’.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Dahlby in the United States?
Based on data from the Decennial U.S. Census, the popularity of the surname Dahlby has seen a slight dip between 2000 and 2010. During this period, its rank dropped by approximately 3.26%, moving from 70,473 in 2000 to 72,771 in 2010. On the other hand, the count or the total number of people with the surname increased marginally by 3.09%, from 259 to 267. However, when viewed as a proportion per 100,000 people, there was a decrease of 10%.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #70,473 | #72,771 | -3.26% |
| Count | 259 | 267 | 3.09% |
| Proportion per 100k | 0.1 | 0.09 | -10% |
Race and Ethnicity of people with the last name Dahlby
The ethnicity distribution for the surname Dahlby, according to the Decennial U.S. Census data, shows that the vast majority of individuals bearing this name identify as White. In 2000, this group represented 96.14% of all Dahlbys, decreasing slightly to 93.63% in 2010. The Hispanic representation also saw a minor decrease from 2.70% to 2.62% over the same period. Notably, those identifying with two or more races appeared in the 2010 data, accounting for 1.87%. There were no recorded changes in the categories of Asian/Pacific Islander, Black, and American Indian and Alaskan Native.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 96.14% | 93.63% | -2.61% |
| Hispanic | 2.7% | 2.62% | -2.96% |
| Two or More Races | 0% | 1.87% | 0% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |