2000
#137,816
National surname rank
Recorded bearers 112
First available Census row
Per 100,000 0.04
Very Rare Last name
Gastrock
A German occupational surname for an innkeeper or tavern owner.
According to the 2020 US Census Bureau surname tables, roughly 123 Americans carry the last name Gastrock. That puts it at #151,639 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,786,621 residents).
This page is the full Name Census profile for the Gastrock 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
123
1 in 2,786,621
Census rank
#151,639
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
107
very rare in the US
Popularity narrative
The Census Bureau recorded 107 bearers of the surname Gastrock in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 151639th position in the national surname ranking.
Among Census respondents with the surname Gastrock, the largest self-reported group is White at 77.6%. The next largest groups are Asian/Pacific Islander (15.0%) and Two or More Races (7.5%).
Origin
Meaning and origin of Gastrock
The surname Gastrock has its origins in Germany, dating back to the 16th century. It is believed to have originated from the German word "Gast," meaning guest or stranger, and "Rock," meaning coat or cloak. This suggests that the name may have been given to someone who wore a distinctive coat or cloak, perhaps as a traveler or visitor to a particular area.
The earliest recorded instances of the name Gastrock can be found in the city of Nuremberg, located in the Bavarian region of Germany. It is mentioned in the Nuremberg Chronicles, a famous illustrated world history book published in 1493, which suggests that the name was already in use by that time.
One of the earliest known individuals with the surname Gastrock was Hans Gastrock, born in 1535 in Nuremberg. He was a renowned goldsmith and metalworker, known for his intricate craftsmanship and significant contributions to the city's thriving metalworking industry.
In the 17th century, the Gastrock family expanded their influence beyond Nuremberg, with several members settling in other parts of Bavaria and neighboring regions. One notable figure was Johann Gastrock (1622-1687), a respected theologian and philosopher who served as a professor at the University of Heidelberg.
The 18th century saw the emergence of another prominent Gastrock, Friedrich Gastrock (1738-1801), a successful merchant and philanthropist from the town of Augsburg. He was known for his generous donations to various charitable causes and played a significant role in the local community.
As the Gastrock family continued to grow and spread across Germany, variations in the spelling of the surname emerged, such as Gashtrock, Gastrok, and Gastrocke. These variations were likely influenced by regional dialects and local pronunciation patterns.
One of the most notable individuals with the surname Gastrock in more recent history was Ernst Gastrock (1876-1957), a German artist and sculptor renowned for his neoclassical works and public monuments. His sculptures can be found in various cities across Germany, including Berlin and Munich.
While the surname Gastrock is not among the most common in Germany today, it has a rich history and a notable presence throughout the country's past, with various individuals bearing the name making significant contributions in various fields.
Demographics
Ancestry and ethnicity for Gastrock
Among Census respondents with the surname Gastrock, the largest self-reported group is White at 77.6%. The next largest groups are Asian/Pacific Islander (15.0%) and Two or More Races (7.5%).
The bar chart below shows how Gastrock 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 Gastrock surname at the time of the 2020 Census, not any inherent property of the name itself.
- White77.6% · 83
- Asian and Pacific Islander15.0% · 16
- Two or more races7.5% · 8
Timeline
Historical Census data for Gastrock
Gastrock 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
+6 bearers (+5.4%)
Per 100,000 0.04
Rank movement Down 3,324 places
2020
#151,639
National surname rank
Recorded bearers 107
-11 bearers (-9.3%)
Per 100,000 0.04
Rank movement Down 10,499 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #137,816 | 112 | 0.04 | First available Census row | First available Census row |
| 2010 | #141,140 | 118 | 0.04 | +6 bearers (+5.4%) | Down 3,324 places |
| 2020 | #151,639 | 107 | 0.04 | -11 bearers (-9.3%) | Down 10,499 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 Gastrock 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 | #151,639 | -7.4% |
| Count | 118 | 107 | -9.3% |
| Per 100K | 0.04 | 0.04 | -10.5% |
Between the 2010 and 2020 Census, the number of Gastrock bearers went from 118 to 107 (-9.3% change). The surname moved down 10,499 positions in the national ranking, going from #141,140 to #151,639.
FAQ
Gastrock surname: questions and answers
How many people in the U.S. have the surname Gastrock?
Name Census estimates that about 123 living Americans carry the surname Gastrock. Using the current population baseline, that works out to roughly 1 in 2,786,621 residents.
How common is Gastrock?
Gastrock ranks #151,639 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 107 people with the surname Gastrock. That is different from the site's living-bearer estimate (123), 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 Gastrock.
Has Gastrock become more or less common over time?
Between 2010 and 2020, the surname Gastrock went from 118 recorded bearers to 107. That is a decrease of 11 (-9.3%). In the national ranking it fell from #141,140 to #151,639.
What does the Census say about the background of Gastrock?
Among Census respondents with the surname Gastrock, the largest self-reported group is White at 77.6%. The next largest groups are Asian/Pacific Islander (15.0%) and Two or More Races (7.5%). 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 Gastrock in the 2020 Census, accounting for 77.6% (83 people in the source table).
What is the full ancestry breakdown?
Gastrock appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (77.6%), Asian/Pacific Islander (15.0%), Two or More Races (7.5%). 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 Gastrock (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 Gastrock mean?
A German occupational surname for an innkeeper or tavern owner. 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 Gastrock (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 have the surname Gastrock?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.