2000
#119,644
National surname rank
Recorded bearers 134
First available Census row
Per 100,000 0.05
Very Rare Last name
Sanwick
A locational surname derived from a place in Yorkshire, England named Sandwick.
According to the 2020 US Census Bureau surname tables, roughly 131 Americans carry the last name Sanwick. That puts it at #146,495 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,616,445 residents).
This page is the full Name Census profile for the Sanwick 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
131
1 in 2,616,445
Census rank
#146,495
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
114
very rare in the US
Popularity narrative
The Census Bureau recorded 114 bearers of the surname Sanwick in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 146495th position in the national surname ranking.
Among Census respondents with the surname Sanwick, the largest self-reported group is White at 99.1%. The next largest groups are Hispanic (0.9%).
Origin
Meaning and origin of Sanwick
The surname SANWICK is believed to have originated in England, with roots dating back to the medieval period. It is thought to be a locational name, derived from a now-lost or unidentified place name. Some scholars suggest that the name may be a variant of the place name "Sandwich" in Kent, while others propose a connection to the Old English words "sand" and "wic," meaning a sandy dwelling or settlement.
One of the earliest recorded instances of the SANWICK surname can be found in the Pipe Rolls of Nottinghamshire from 1195, where a Richard de Sandwic is mentioned. This suggests that the name had already established itself by the late 12th century. The Hundred Rolls of Bedfordshire from 1273 also reference a Hugo de Sandwyk, further solidifying the presence of this surname in medieval England.
During the 13th and 14th centuries, various spellings of the name appeared in historical records, including Sandwic, Sandwyck, and Sandwych. These variations may reflect regional dialects or scribal errors in record-keeping. It is worth noting that the modern spelling "SANWICK" likely emerged as a result of linguistic evolution over the centuries.
One notable historical figure bearing the SANWICK name was Sir John Sanwick (c. 1410-1475), a prominent landowner and politician in Gloucestershire during the Wars of the Roses. Another individual of note was Robert Sanwick (1560-1628), an English clergyman and author who served as the Dean of York in the early 17th century.
In the realm of literature, the SANWICK surname appears in several works from the 16th and 17th centuries. For instance, John Sanwick is mentioned in Robert Burton's famous work "The Anatomy of Melancholy" (1621), while a character named William Sanwick features in the play "The Night Walker" by Thomas Middleton (1615).
Other notable individuals with the SANWICK surname include Elizabeth Sanwick (1675-1742), a philanthropist and benefactor of several charitable institutions in London, and Samuel Sanwick (1790-1864), a successful merchant and shipowner who played a role in the development of the whaling industry in New England.
While the SANWICK surname may not be among the most common in modern times, its rich history and varied spellings throughout the centuries serve as a testament to the enduring legacy of this English locational name.
Demographics
Ancestry and ethnicity for Sanwick
Among Census respondents with the surname Sanwick, the largest self-reported group is White at 99.1%. The next largest groups are Hispanic (0.9%).
The bar chart below shows how Sanwick 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 Sanwick surname at the time of the 2020 Census, not any inherent property of the name itself.
- White99.1% · 113
- Hispanic or Latino0.9% · 1
Timeline
Historical Census data for Sanwick
Sanwick appears in 3 published Census surname files: 2000, 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2010
#133,048
National surname rank
Recorded bearers 127
-7 bearers (-5.2%)
Per 100,000 0.04
Rank movement Down 13,404 places
2020
#146,495
National surname rank
Recorded bearers 114
-13 bearers (-10.2%)
Per 100,000 0.04
Rank movement Down 13,447 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #119,644 | 134 | 0.05 | First available Census row | First available Census row |
| 2010 | #133,048 | 127 | 0.04 | -7 bearers (-5.2%) | Down 13,404 places |
| 2020 | #146,495 | 114 | 0.04 | -13 bearers (-10.2%) | Down 13,447 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 Sanwick 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 | #133,048 | #146,495 | -10.1% |
| Count | 127 | 114 | -10.2% |
| Per 100K | 0.04 | 0.04 | -4.6% |
Between the 2010 and 2020 Census, the number of Sanwick bearers went from 127 to 114 (-10.2% change). The surname moved down 13,447 positions in the national ranking, going from #133,048 to #146,495.
FAQ
Sanwick surname: questions and answers
How many people in the U.S. have the surname Sanwick?
Name Census estimates that about 131 living Americans carry the surname Sanwick. Using the current population baseline, that works out to roughly 1 in 2,616,445 residents.
How common is Sanwick?
Sanwick ranks #146,495 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 114 people with the surname Sanwick. That is different from the site's living-bearer estimate (131), 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 Sanwick.
Has Sanwick become more or less common over time?
Between 2010 and 2020, the surname Sanwick went from 127 recorded bearers to 114. That is a decrease of 13 (-10.2%). In the national ranking it fell from #133,048 to #146,495.
What does the Census say about the background of Sanwick?
Among Census respondents with the surname Sanwick, the largest self-reported group is White at 99.1%. The next largest groups are Hispanic (0.9%). 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 Sanwick in the 2020 Census, accounting for 99.1% (113 people in the source table).
What is the full ancestry breakdown?
Sanwick appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (99.1%), Hispanic (0.9%). 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 Sanwick (2000, 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 Sanwick mean?
A locational surname derived from a place in Yorkshire, England named Sandwick. 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 Sanwick (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 share the surname Sanwick?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.