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

Un, 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 Un surname is from the 2010 census data.

Popularity of Un in America

Un is the 31873rd most popular name in America based on the data we have collected from the U.S. Census Bureau.

The Un surname appeared 724 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 0 people would have the surname Un.

We can also compare 2010 data for Un 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 Un

The surname "UN" is believed to have originated in the region of Normandy in northern France during the early Middle Ages. It is derived from the Old French word "un," meaning "one" or "a single." This suggests that the name may have been initially given as a descriptive nickname or to distinguish an individual from others with the same given name.

One of the earliest recorded instances of the surname "UN" can be found in the Doomsday Book, a comprehensive survey commissioned by William the Conqueror in 1086. The name appears in various spellings, such as "Un," "Unu," and "Vun," reflecting the linguistic variations of the time.

During the 12th century, the surname "UN" was associated with several prominent figures in Normandy. One notable example is Raoul Un, a wealthy landowner and nobleman who played a significant role in the construction of the Abbey of Fécamp in the late 1100s.

In the 13th century, the name "UN" appeared in various records across Normandy and neighboring regions. Jacques Un, a merchant from Rouen, was documented as a member of the city's influential guild system in 1245. Additionally, Marguerite Un, a noblewoman from Caen, was recorded as a benefactor of the local cathedral in 1268.

As the surname spread across Europe, it took on various regional variations. In England, for instance, the name was often spelled as "Onne" or "Onn," as evidenced by records from the 14th and 15th centuries. One notable bearer was Sir William Onne, a knight who fought alongside King Henry V at the Battle of Agincourt in 1415.

In the 16th century, the "UN" surname gained prominence in the Low Countries (modern-day Belgium and the Netherlands). Pieter Un, a renowned painter from Antwerp, was celebrated for his religious artworks and portraits during this period (1520-1598).

Throughout the centuries, the surname "UN" has been associated with various notable individuals across different fields. For example, Étienne Un (1633-1707) was a prominent French mathematician and astronomer, while Johan Un (1780-1845) was a respected Dutch philosopher and scholar.

Race and ethnic origin of people with the last name Un

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

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 Un 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 Un 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 Un was researched and written by our team of onomatology and genealogy experts.

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

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