The Census Bureau's Census surnames product is a data release based on names recorded in the decennial census. The product contains rank and frequency data on surnames reported 100 or more times in the decennial census, along with Hispanic origin and race category percentages. The latter are suppressed where necessary for confidentiality. The data focus on summarized aggregates of counts and characteristics associated with surnames, and the data do not in any way identify any specific individuals.

Count of family names (surnames, last names) in Peru, from an approximately 7% sample of the adult population.

In Peru, many people are registered as supporters of political parties, and their names are published by the Registro de Organizaciones Políticas. The lists include a DNI (national identity number) for each person to avoid duplicates. The 1,572,002 people on these lists (excluding the regional movements) represent around 7% of the adult population of Peru.

Their maternal and paternal family names have been sorted and counted. Nearly all of the names have entries for both paternal and maternal names.

These 3,142,561 family names represent 85,395 different names, most of which are infrequent. The file has been limited to names that occur ten or more times in the sample, which is 12,139 unique names (3,021,655 names, more than 96% of the total).

Each row in the file contains the rank, a percentage of that name in the entire set of 3,142,561 names, a count of the times the name occurs in the sample, and the name.

There are some names (around 800) in this file that contain a space. In most cases, these are names like "GARCIA DE RUIZ", where RUIZ is the name of the woman's husband. There are also cases where the name is like "DE LA CRUZ", which is a complete family name. No attempt has been made to remove the part of names which refer to the husband's name, this could be considered for a later version.

As of 2023, Nagy was the most popular surname in Hungary, carried by nearly 223 thousand individuals. The second most common last name was Kovács, carried by over 205 thousand people.

As of January 2024, Nielsen was the most common surname in Denmark. That year, 229,000 people bore the name in the country. That was around 3,000 individuals more compared to the second most popular surname, Jensen. Historically, most surnames in Denmark were created by using the patronymic tradition until hereditary surnames became mandatory in the 1820s. This was also a common tradition in some of the other Nordic countries. For Danish surnames, this meant to have the suffix -sen (son) or -datter (daughter) added to the father’s name.

Female names

The number of women in Denmark amounted to approximately 2.98 million in 2023. Among these, the most common first name was Anne, with around 44,100 women having the name that year. The name originally derived from the name Hannah or Anna. Other popular female names in Denmark were Kirsten, Mette, and Hanne.

Male names

Among the 2.95 million men lived in Denmark as of 2023, and Peter was the most frequent name. As of January 2024, around 46.500 men bore the name, which is also found in the variants Petar, Peder, and Petter. The names Jens, Michael, and Lars were also very common among the Danish men.

Count of family names (surnames, last names) in Peru, from an approximately 7% sample of the adult population.

In Peru, many people are registered as supporters of political parties, and their names are published by the Registro de Organizaciones Políticas. The lists include a DNI (national identity number) for each person to avoid duplicates. The 1,572,002 people on these lists (excluding the regional movements) represent around 7% of the adult population of Peru.

Their maternal and paternal family names names have been sorted and counted. Nearly all of the names have entries for both paternal and maternal names.

These 3,142,561 family names represent 85,395 different names, most of which are infrequent. The file has been limited to names that occur ten or more times in the sample, which is 12,139 unique names (3,021,655 names, more than 96% of the total).

Each row in the file contains the rank, a percentage of that name in the entire set of 3,142,561 names, a count of the times the name occurs in the sample, and the name.

There are some names (around 800) in this file that contain a space. In most cases, these are names like "GARCIA DE RUIZ", where RUIZ is the name of the woman's husband. There are also cases where the name is like "DE LA CRUZ", which is a complete family name. No attempt has been made to remove the part of names which refer to the husband's name, this could be considered for a later version.

Index of surnames for 1851 census : ref. HO.107-2196/7 : showing numbers and incidence of occurrence in 16 parishes ... is a book. It was written by Geoffrey Peet and published by The Society in 1985.

The most common first name for a U.S. president is James, followed by John and then William. Six U.S. presidents have been called James, although Jimmy Carter was the only one who did not serve in the nineteenth century. Five presidents have been called John; most recently John Fitzgerald Kennedy, while John is also the middle name of the incumbent President Donald Trump.

Middle names

Middle names were rarely given in the U.S.' early years, however the practice became more common throughout the nineteenth century. Three U.S. presidents actually went by their middle names in their adulthood, namely Stephen Grover Cleveland, Thomas Woodrow Wilson and David Dwight Eisenhower. Several presidents also shared their middle names with other presidents' surnames, including Ronald Wilson Reagan and William Jefferson Clinton. Coincidentally, there were two U.S. presidents who had just the initial "S." as their middle name, these were; Harry S. Truman, whose S represented his grandfathers (Anderson Shipp Truman and Solomon Young); and Ulysses S. Grant, whose S was added to his name through a clerical error (likely due to his mother's maiden name; Simpson) when being enrolled in West Point Military Academy, but the initial stuck and he kept it throughout the rest of his life.

Family ties

Five surnames have been shared by U.S. presidents, and four of these pairs have been related. Adams and Bush are the names of the two father-son pairs (the Adams pair also share their first name; the Bush pair share a first and a middle name), while William Henry Harrison was the grandfather of Benjamin Harrison. Theodore Roosevelt and Franklin D. Roosevelt were fifth cousins, however FDR's marriage to Theodore's niece, Eleanor, made him a nephew-in law (Theodore even gave Eleanor away on her wedding day). James Madison and Zachary Taylor were also second cousins. Multiple other presidents are distant cousins from one another, often several times removed (George W. Bush and Barack Obama are technically tenth cousins, twice removed), and a number of presidents have become related by marriage. The only presidents to share a surname and not be related are Andrew Johnson and Lyndon B. Johnson.

This database is part of the ArabLEX set of data which consists of the Database of Arabic General Vocabulary (DAG), Database of Arabic Place Names (DAP), Database of Foreign Names in Arabic (DAF) and Database of Arab Names (DAN) available from ELRA under references, respectively, ELRA-L0131, ELRA-M0105, ELRA-M0106 and ELRA-M0107.With over 218 million forms based on 100,000 lemmas, this full-form database covers Arab personal names (both given names and surnames) in both Arabic and English and contains a rich set of romanized name variants for each name with a variety of supplementary information such as gender, name type and frequency statistics. This comprehensive lexicon (over 6.4 million variants) contains precise phonemic transcriptions and vocalized Arabic for all inflected and cliticized forms for each name.This database is provided with three options: 1) proclitics, 2) phonetic information (CARS) and 3) orthographic variants. Subsets excluding some of the three proposed options may be provided upon demand. CARS is an accurate phonemic transcription. Optionally, phonetic transcriptions, IPA and/or SAMPA, can be provided, fine tuned to a customer's specifications.Quantity and size: 218,215,875 lines / 32,659 MB (31.9 GB)File format: flat TSV text filesSamples and a specifications document available upon request.