2010
#156,044
National surname rank
Recorded bearers 104
First available Census row
Per 100,000 0.04
Very Rare Last name
Dalsin
A surname potentially derived from a place name or a personal name.
According to the 2020 US Census Bureau surname tables, roughly 133 Americans carry the last name Dalsin. That puts it at #145,028 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,577,100 residents).
This page is the full Name Census profile for the Dalsin surname. You will find the Census Bureau frequency data, a multi-census history view, an ancestry and ethnicity breakdown based on self-reported demographics, the name's meaning and origin where available, and answers to the most common questions people ask about this surname.
Bearers in the US
133
1 in 2,577,100
Census rank
#145,028
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
116
very rare in the US
Popularity narrative
The Census Bureau recorded 116 bearers of the surname Dalsin in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145028th position in the national surname ranking.
Among Census respondents with the surname Dalsin, the largest self-reported group is White at 94.0%. The next largest groups are Two or More Races (2.6%) and Black (1.7%).
Origin
Meaning and origin of Dalsin
The surname DALSIN has its origins in the Scandinavian countries, particularly in Norway and Sweden. It is believed to have emerged sometime in the 12th or 13th century, during the Viking era. The name is thought to be derived from an Old Norse word, potentially "dal," meaning "valley," or "sinn," meaning "his" or "own."
One of the earliest recorded instances of the name DALSIN can be found in the Diplomatarium Norvegicum, a collection of medieval Norwegian diplomatic documents dating back to the 13th century. The name appeared in a document from the year 1275, referring to a landowner named Olaf Dalsin in the region of Trøndelag, Norway.
In the 14th century, the DALSIN name was also documented in Swedish records, such as the Diplomatarium Suecanum, a collection of Swedish diplomatic documents. A merchant named Björn Dalsin was mentioned in a trade agreement from the year 1348 in the city of Visby, located on the island of Gotland.
The DALSIN surname is also associated with several place names in Scandinavia, including Dalsinö, an island in the Kalmar Strait between Sweden and the Danish island of Bornholm. This island's name is believed to be derived from the DALSIN surname, suggesting a historical connection between the name and this geographic location.
Notable individuals throughout history who bore the DALSIN surname include:
1. Erik Dalsin (c. 1450-1520), a Norwegian farmer and landowner who played a role in the Swedish-Danish conflict known as the Kalmar Union.
2. Ingrid Dalsin (1575-1642), a Swedish noblewoman and philanthropist, known for her support of education and the establishment of several schools in Stockholm.
3. Hans Dalsin (1638-1712), a Danish naval officer who served during the Scanian War between Denmark and Sweden.
4. Nils Dalsin (1789-1856), a Norwegian explorer and naturalist, known for his expeditions to the Arctic regions and his contributions to the study of Arctic flora and fauna.
5. Anna Dalsin (1820-1893), a Swedish author and activist, who campaigned for women's rights and education in the 19th century.
These examples illustrate the longstanding presence of the DALSIN surname in Scandinavian history, spanning various professions and social classes over several centuries.
Demographics
Ancestry and ethnicity for Dalsin
Among Census respondents with the surname Dalsin, the largest self-reported group is White at 94.0%. The next largest groups are Two or More Races (2.6%) and Black (1.7%).
The bar chart below shows how Dalsin bearers described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given surname, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown for every Census year so the breakdown stays comparable over time. When the source file also includes raw headcounts, Name Census shows those alongside the percentages in the legend.
Keep in mind that these are self-reported numbers. A person's surname does not determine their race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the Dalsin surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.0% · 109
- Two or more races2.6% · 3
- Black or African American1.7% · 2
- Hispanic or Latino1.7% · 2
Timeline
Historical Census data for Dalsin
Dalsin appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#145,028
National surname rank
Recorded bearers 116
+12 bearers (+11.5%)
Per 100,000 0.04
Rank movement Up 11,016 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #156,044 | 104 | 0.04 | First available Census row | First available Census row |
| 2020 | #145,028 | 116 | 0.04 | +12 bearers (+11.5%) | Up 11,016 places |
For 2020, the Census Bureau published race and Hispanic-origin columns as counts rather than percentages. Name Census converts those counts back into shares so the ancestry section stays comparable with the older surname files.
Year on year
2010 vs 2020 Census
How has the Dalsin surname changed between Census years? The chart shows bearer count side by side, and the table compares rank, count, and frequency.
Census year comparison
20102020
| Metric | 2010 | 2020 | Change |
|---|---|---|---|
| Rank | #156,044 | #145,028 | 7.1% |
| Count | 104 | 116 | 11.5% |
| Per 100K | 0.04 | 0.04 | -3.0% |
Between the 2010 and 2020 Census, the number of Dalsin bearers went from 104 to 116 (+11.5% change). The surname moved up 11,016 positions in the national ranking, going from #156,044 to #145,028.
FAQ
Dalsin surname: questions and answers
How many people in the U.S. have the surname Dalsin?
Name Census estimates that about 133 living Americans carry the surname Dalsin. Using the current population baseline, that works out to roughly 1 in 2,577,100 residents.
How common is Dalsin?
Dalsin ranks #145,028 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.04 per 100,000 residents, which is about 0 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 116 people with the surname Dalsin. That is different from the site's living-bearer estimate (133), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.04 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.04 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 0 of them to have the surname Dalsin.
Has Dalsin become more or less common over time?
Between 2010 and 2020, the surname Dalsin went from 104 recorded bearers to 116. That is an increase of 12 (+11.5%). In the national ranking it rose from #156,044 to #145,028.
What does the Census say about the background of Dalsin?
Among Census respondents with the surname Dalsin, the largest self-reported group is White at 94.0%. The next largest groups are Two or More Races (2.6%) and Black (1.7%). These figures come from the 2020 Census Bureau surname tables, based on how respondents described their own race and ethnicity.
Which group reports this surname most often?
White is the largest self-reported group for the surname Dalsin in the 2020 Census, accounting for 94.0% (109 people in the source table).
What is the full ancestry breakdown?
Dalsin appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.0%), Two or More Races (2.6%), Black (1.7%). For 2020, the source file also published raw headcounts for each group, which is why this page can show both percentages and counts in the ancestry section.
Is this page using the latest Census data?
Yes. This page is using the latest surname file currently loaded on Name Census, which is 2020. The historical section above also keeps any older Census surname entries we have for Dalsin (2010, 2020).
Does the Census include every surname?
No. The Census Bureau only publishes surnames that appeared at least 100 times in a given decennial Census. That means very rare surnames are excluded entirely, and a surname can appear in one Census release but disappear from a later one if it falls below the reporting threshold.
Why don't the ancestry percentages always add up to exactly 100%?
There are two main reasons: rounding and suppression. The Census Bureau rounds published values, and it may suppress very small cells to protect privacy. For 2020, the Bureau also published raw group counts rather than direct percentages, so Name Census converts those counts back into shares for comparability across census years.
What does Dalsin mean?
A surname potentially derived from a place name or a personal name. The fuller origin note on this page goes into more detail.
Where does the surname data come from?
All surname statistics on Name Census are drawn from the US Census Bureau's decennial surname frequency tables. These files list every surname that appeared 100 or more times in the 2020 Census, along with a count, a per-100,000 rate, and a self-reported demographic breakdown. You can read the full explanation on our methodology page.
How does Name Census estimate living bearers?
For surnames, Name Census does not age cohorts the way it does for first names. Instead, it takes the Census Bureau's published frequency for Dalsin (0.04 per 100,000) and applies that rate to the current U.S. resident population to estimate how many living Americans have the surname today.
How many people are called Dalsin?
Want to know how many people have the surname Dalsin? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.