Find out how popular the last name Flach is in the United States and learn more about the meaning, history, and race and ethnic origin of people in America who are named Flach.

Flach, like all of the last names we have data for, is identified by the U.S. Census Bureau as a surname which has more than 100 occurrences in the United States in the Decennial Census survey. The most recent statistics we have for the Flach surname is from the 2010 census data.

Popularity of Flach in America

Flach is the 18685th most popular name in America based on the data we have collected from the U.S. Census Bureau.

The Flach surname appeared 1,471 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 1 people would have the surname Flach.

We can also compare 2010 data for Flach to data from the previous census in 2000. The table below contains all of the statistics for both years in a side-by-side comparison.

The history of the last name Flach

The surname Flach is of German origin, derived from the Old High German word "flah" meaning "flat" or "level." It likely originated as a descriptive surname, referring to someone who lived on a flat or level piece of land.

The earliest recorded instances of the name Flach date back to the 13th century. One of the earliest known bearers of the name was Henricus Flach, mentioned in records from the city of Cologne in 1275. The name also appears in various medieval records and documents from other parts of Germany, such as Bavaria and Saxony.

In the 14th century, a variant spelling "Flache" was also used, as evidenced by a record from the town of Esslingen in 1387 that mentions a person named Cunrat Flache. This spelling may have been influenced by the Middle High German word "flach," which also meant "flat" or "level."

The name Flach is also found in some place names, such as Flachau, a town in the Austrian state of Salzburg. This place name is believed to be derived from the same root as the surname, indicating an area of flat or level land.

Historically notable individuals with the surname Flach include:

1. Johann Friedrich Flach (1713-1792), a German philosopher and theologian.
2. Jacques Flach (1846-1919), a French legal historian and professor at the University of Paris.
3. Kurt Flach (1886-1959), a German naval officer and recipient of the Pour le Mérite during World War I.
4. Martin Flach (1944-2022), a German actor known for his roles in television and films.
5. Ulrich Flach (born 1944), a German footballer who played as a defender for several clubs in the Bundesliga.

While the surname Flach is most commonly associated with Germany and German-speaking regions, it has also been found in other parts of Europe, likely due to migration and the spread of the name over time.

Race and ethnic origin of people with the last name Flach

We also have some data on the ancestry of people with the surname Flach.

The below race categories are the modified race categories used in the Census Bureau's population estimates program. All people were categorized into six mutually exclusive racial and Hispanic origin groups:

1. White only
2. Black only
3. American Indian and Alaskan Native only
4. Asian and Pacific Islander only
5. Hispanic
6. Two or More Races

For the most recent 2010 census data, the race/ethnic origin breakdown for Flach was:

Note: Any fields showing (S) means the data was suppressed for privacy so that the data does not in any way identify any specific individuals.

Since we have data from the previous census in 2000, we can also compare the values to see how the popularity of Flach has changed in the 10 years between the two census surveys.

Data source

The last name data and ethnic breakdown of last names is sourced directly from the Decennial Census survey, conducted every 10 years by the United States Census Bureau.

The history and meaning of the name Flach was researched and written by our team of onomatology and genealogy experts.

If you have a correction or suggestion to improve the history of Flach, please contact us.

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