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

Demi, 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 Demi surname is from the 2010 census data.

Popularity of Demi in America

Demi is the 80419th most popular name in America based on the data we have collected from the U.S. Census Bureau.

The Demi surname appeared 236 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 Demi.

We can also compare 2010 data for Demi 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 Demi

The surname DEMI originated in France during the Middle Ages. It is derived from the Old French word "demi," meaning "half" or "partial." This name likely referred to someone who lived on a half-share of land or paid half the usual taxes or rents.

One of the earliest recorded instances of the name DEMI can be found in the Domesday Book, a manuscript record of landholders in England commissioned by William the Conqueror in 1086. An entry in the book mentions a landowner named Radulfus Demi, who held lands in Buckinghamshire.

In the 13th century, a notable bearer of the name was Sir John Demi, a knight who participated in the Seventh Crusade led by King Louis IX of France. Records show that Sir John was born around 1230 and died in 1275 during the Crusade.

Another early example is Jehan Demi, a French poet and songwriter who lived in the 14th century. He was known for composing chansons and ballades, which were popular forms of lyric poetry during that time.

During the Renaissance period, there was a Italian painter named Pietro Demi, who was active in the late 15th and early 16th centuries. He is particularly known for his religious paintings and frescoes in churches throughout northern Italy.

In the 17th century, a French mathematician and astronomer named Jean-Baptiste Demi made significant contributions to the field of celestial mechanics. He was born in 1667 and died in 1736, and his work helped lay the foundations for the development of modern orbital theory.

As the name spread across Europe, it also took on various regional spellings and variations. In England, for instance, the name was sometimes spelled as Demmy or Demmie, while in Germany, it appeared as Demi or Demmi.

Race and ethnic origin of people with the last name Demi

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

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

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

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