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

DeJean, 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 DeJean surname is from the 2010 census data.

Popularity of DeJean in America

DeJean is the 14950th most popular name in America based on the data we have collected from the U.S. Census Bureau.

The DeJean surname appeared 1,978 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 DeJean.

We can also compare 2010 data for DeJean 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 DeJean

The surname DEJEAN originated in France, with the earliest records dating back to the 12th century. It is thought to be derived from the Old French words "de" meaning "of" and "Jan" or "Jean", a common French name derived from the Hebrew name Yohanan.

The name was particularly prevalent in the southern regions of France, such as Languedoc and Provence. It is believed that the name may have been used to distinguish those who were from the town or region of Jean, a common place name in France.

One of the earliest known records of the name DEJEAN is found in the Cartulaire de l'Abbaye de Lérins, a medieval manuscript dating back to the 13th century. This document references a nobleman named Guilhem DEJEAN who was a vassal of the Count of Provence.

In the 14th century, a branch of the DEJEAN family settled in the town of Nîmes, located in the Languedoc region. A notable member of this branch was Jacques DEJEAN (1315-1384), a merchant and landowner who was instrumental in the construction of the town's fortifications.

During the 16th century, the DEJEAN name gained prominence with the birth of Urbain DEJEAN (1535-1616), a renowned French military engineer and architect. He is best known for his work on the fortifications of several important cities, including La Rochelle and Brouage.

Another notable figure was Jean DEJEAN (1679-1744), a French botanist and naturalist who made significant contributions to the study of insects. He is credited with introducing the concept of binomial nomenclature, a system of naming species with two parts: the genus and the specific epithet.

In the 19th century, Pierre François Marie Auguste DEJEAN (1780-1845) was a French entomologist and military officer. He is renowned for his extensive work on the classification of beetles, publishing several volumes on the subject.

Throughout history, the DEJEAN surname has been associated with various places in France, such as Nîmes, Marseille, and Lyon, where members of the family have lived and contributed to the local communities.

Race and ethnic origin of people with the last name DeJean

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

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

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

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