2000
#12,703
National surname rank
Recorded bearers 2,233
First available Census row
Per 100,000 0.83
Rare Last name
Simcox
An English occupational surname likely derived from the Old English for "Simon the cook."
According to the 2020 US Census Bureau surname tables, roughly 2,498 Americans carry the last name Simcox. That puts it at #13,377 in the national surname ranking, appearing at a frequency of 0.73 per 100,000 people (about 1 in 137,212 residents).
This page is the full Name Census profile for the Simcox 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 Simcox with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
2.5K
1 in 137,212
Census rank
#13,377
2020 decennial data
Per 100,000
0.7
Frequency rate
Recorded bearers
2.2K
rare in the US
Popularity narrative
The Census Bureau recorded 2,178 bearers of the surname Simcox in its 2020 decennial surname file. At a rate of 0.73 per 100,000 residents, it holds the 13377th position in the national surname ranking.
Among Census respondents with the surname Simcox, the largest self-reported group is White at 93.9%. The next largest groups are Hispanic (2.6%) and Two or More Races (2.6%).
Origin
Meaning and origin of Simcox
The surname Simcox originates from England and is believed to have emerged during the medieval period, likely in the 13th or 14th century. It is derived from the Old English personal name "Simund" or "Sigemund," which means "victory protection" or "victory hand." The suffix "-cox" is believed to be a diminutive form, indicating a shortened version of the name.
One of the earliest recorded instances of the Simcox name can be found in the Subsidy Rolls of Worcestershire from 1327, where it appears as "Symondcok." This suggests that the name was already in use and established in the West Midlands region of England during that time.
In the 16th century, the Simcox surname appeared in various records, such as the Parish Registers of Staffordshire, where a Thomas Symcox was mentioned in 1539. The name also appeared in the Musters of Worcestershire in 1584, indicating its presence in the local population.
Notable individuals with the Simcox surname include John Simcox (1572-1619), an English clergyman and author who served as the Rector of Tamworth in Staffordshire. Another prominent figure was Richard Simcox (1613-1678), an English Presbyterian minister and author who wrote several religious works.
During the 17th century, the Simcox family established themselves in the county of Shropshire, where they owned lands and properties. One of the earliest recorded members of this branch was Edward Simcox (1620-1685), who was a landowner and member of the local gentry.
In the 18th century, a notable figure was John Simcox (1724-1797), a successful merchant and landowner from Shropshire. He amassed a considerable fortune through his business ventures and acquired several estates in the region.
As the centuries progressed, the Simcox name continued to spread throughout England, with various branches emerging in different counties. Some notable individuals include William Simcox (1792-1867), a prominent industrialist from Birmingham who was involved in the manufacturing of iron and steel products, and Samuel Simcox (1820-1891), a renowned architect from Shrewsbury who designed several churches and public buildings in the region.
Demographics
Ancestry and ethnicity for Simcox
Among Census respondents with the surname Simcox, the largest self-reported group is White at 93.9%. The next largest groups are Hispanic (2.6%) and Two or More Races (2.6%).
The bar chart below shows how Simcox 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 Simcox surname at the time of the 2020 Census, not any inherent property of the name itself.
- White93.9% · 2,045
- Hispanic or Latino2.6% · 56
- Two or more races2.6% · 56
- Black or African American0.7% · 15
- Asian and Pacific Islander0.3% · 6
Timeline
Historical Census data for Simcox
Simcox 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
#13,177
National surname rank
Recorded bearers 2,320
+87 bearers (+3.9%)
Per 100,000 0.79
Rank movement Down 474 places
2020
#13,377
National surname rank
Recorded bearers 2,178
-142 bearers (-6.1%)
Per 100,000 0.73
Rank movement Down 200 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #12,703 | 2,233 | 0.83 | First available Census row | First available Census row |
| 2010 | #13,177 | 2,320 | 0.79 | +87 bearers (+3.9%) | Down 474 places |
| 2020 | #13,377 | 2,178 | 0.73 | -142 bearers (-6.1%) | Down 200 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 Simcox 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 | #13,177 | #13,377 | -1.5% |
| Count | 2,320 | 2,178 | -6.1% |
| Per 100K | 0.79 | 0.73 | -7.8% |
Between the 2010 and 2020 Census, the number of Simcox bearers went from 2,320 to 2,178 (-6.1% change). The surname moved down 200 positions in the national ranking, going from #13,177 to #13,377.
FAQ
Simcox surname: questions and answers
How many people in the U.S. have the surname Simcox?
Name Census estimates that about 2,498 living Americans carry the surname Simcox. Using the current population baseline, that works out to roughly 1 in 137,212 residents.
How common is Simcox?
Simcox ranks #13,377 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.73 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 2,178 people with the surname Simcox. That is different from the site's living-bearer estimate (2,498), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.73 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.73 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Simcox.
Has Simcox become more or less common over time?
Between 2010 and 2020, the surname Simcox went from 2,320 recorded bearers to 2,178. That is a decrease of 142 (-6.1%). In the national ranking it fell from #13,177 to #13,377.
What does the Census say about the background of Simcox?
Among Census respondents with the surname Simcox, the largest self-reported group is White at 93.9%. The next largest groups are Hispanic (2.6%) and Two or More Races (2.6%). 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 Simcox in the 2020 Census, accounting for 93.9% (2,045 people in the source table).
What is the full ancestry breakdown?
Simcox appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (93.9%), Hispanic (2.6%), Two or More Races (2.6%). 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 Simcox (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 Simcox mean?
An English occupational surname likely derived from the Old English for "Simon the cook." 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 Simcox (0.73 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 have the last name Simcox?
Our sister site HowManyOfMe.org answers how many people have the surname Simcox at a glance, with the living-bearer count up front.