2000
#116,835
National surname rank
Recorded bearers 138
First available Census row
Per 100,000 0.05
Very Rare Last name
Cochlin
A Scottish or English surname potentially referring to an area or person from a small valley or hollow.
According to the 2020 US Census Bureau surname tables, roughly 134 Americans carry the last name Cochlin. That puts it at #144,270 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,557,868 residents).
This page is the full Name Census profile for the Cochlin 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.
For British records, Name Census UK has a British surname profile for Cochlin with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
134
1 in 2,557,868
Census rank
#144,270
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
117
very rare in the US
Popularity narrative
The Census Bureau recorded 117 bearers of the surname Cochlin in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 144270th position in the national surname ranking.
Among Census respondents with the surname Cochlin, the largest self-reported group is White at 94.0%. The next largest groups are Hispanic (2.6%) and Asian/Pacific Islander (1.7%).
Origin
Meaning and origin of Cochlin
The surname COCHLIN is believed to have originated in England during the medieval period. It is derived from the Old English words "cocc" and "lin," which together mean "dwelling place near a small hill or mound." The earliest recorded instances of this surname can be traced back to the 13th century in the counties of Derbyshire and Nottinghamshire.
One of the earliest known bearers of this name was a certain William Cochlin, who was mentioned in the Hundred Rolls of Nottinghamshire in 1275. The Hundred Rolls were a series of administrative documents compiled during the reign of King Edward I, containing valuable information about landowners and their holdings across England.
In the 14th century, the name COCHLIN appeared in various legal and manorial records, such as the Court Rolls of the Manor of Wellow in Somerset, where a John Cochlin was recorded as a tenant in 1379. This suggests that the name had spread to other parts of England by this time.
During the Tudor period, the COCHLIN surname was also found in the parish records of several English villages. One notable example is Thomas Cochlin, who was born in the village of Ashbourne, Derbyshire, in 1524 and served as a local magistrate.
In the 17th century, the COCHLIN family established themselves as landowners and gentry in the county of Staffordshire. A notable figure from this branch was Sir Edward Cochlin (1620-1689), who served as a Member of Parliament for the borough of Newcastle-under-Lyme during the reign of King Charles II.
Another prominent individual with the COCHLIN surname was the Rev. John Cochlin (1694-1768), who was a renowned clergyman and scholar. He served as the rector of the parish of Whittington in Staffordshire and authored several works on theology and philosophy.
As the COCHLIN family spread across England over the centuries, various spelling variations emerged, such as Cochline, Cocklin, and Cocklin'. However, the original form of COCHLIN remained the most prevalent.
Demographics
Ancestry and ethnicity for Cochlin
Among Census respondents with the surname Cochlin, the largest self-reported group is White at 94.0%. The next largest groups are Hispanic (2.6%) and Asian/Pacific Islander (1.7%).
The bar chart below shows how Cochlin 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 Cochlin surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.0% · 110
- Hispanic or Latino2.6% · 3
- Asian and Pacific Islander1.7% · 2
- Black or African American0.9% · 1
- Two or more races0.9% · 1
Timeline
Historical Census data for Cochlin
Cochlin 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
#141,140
National surname rank
Recorded bearers 118
-20 bearers (-14.5%)
Per 100,000 0.04
Rank movement Down 24,305 places
2020
#144,270
National surname rank
Recorded bearers 117
-1 bearers (-0.8%)
Per 100,000 0.04
Rank movement Down 3,130 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #116,835 | 138 | 0.05 | First available Census row | First available Census row |
| 2010 | #141,140 | 118 | 0.04 | -20 bearers (-14.5%) | Down 24,305 places |
| 2020 | #144,270 | 117 | 0.04 | -1 bearers (-0.8%) | Down 3,130 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 Cochlin 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 | #141,140 | #144,270 | -2.2% |
| Count | 118 | 117 | -0.8% |
| Per 100K | 0.04 | 0.04 | -2.1% |
Between the 2010 and 2020 Census, the number of Cochlin bearers went from 118 to 117 (-0.8% change). The surname moved down 3,130 positions in the national ranking, going from #141,140 to #144,270.
FAQ
Cochlin surname: questions and answers
How many people in the U.S. have the surname Cochlin?
Name Census estimates that about 134 living Americans carry the surname Cochlin. Using the current population baseline, that works out to roughly 1 in 2,557,868 residents.
How common is Cochlin?
Cochlin ranks #144,270 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 117 people with the surname Cochlin. That is different from the site's living-bearer estimate (134), 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 Cochlin.
Has Cochlin become more or less common over time?
Between 2010 and 2020, the surname Cochlin went from 118 recorded bearers to 117. That is a decrease of 1 (-0.8%). In the national ranking it fell from #141,140 to #144,270.
What does the Census say about the background of Cochlin?
Among Census respondents with the surname Cochlin, the largest self-reported group is White at 94.0%. The next largest groups are Hispanic (2.6%) and Asian/Pacific Islander (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 Cochlin in the 2020 Census, accounting for 94.0% (110 people in the source table).
What is the full ancestry breakdown?
Cochlin appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.0%), Hispanic (2.6%), Asian/Pacific Islander (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 Cochlin (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 Cochlin mean?
A Scottish or English surname potentially referring to an area or person from a small valley or hollow. 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 Cochlin (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 Americans have the surname Cochlin?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.