Main file: world_surnames.csv
? MB
Size
500,000+
Records
200+
By country
Dataset en preparación / Dataset in preparation
Format: CSV (UTF-8) · License: CC-BY 4.0 · Last updated: 2026-06-10
Columns
| Column | Type | Description |
|---|---|---|
| surname | string | Surname |
| country_iso2 | string | Country ISO code (ISO 3166-1 alpha-2) |
| carriers | integer | Number of bearers |
| source | string | Data source |
How to cite
surnam.es (2026). World Surnames Dataset. Available at: https://surnam.es/data. License: CC-BY 4.0.
FAQs
What license is the dataset published under?
The dataset is published under Creative Commons Attribution 4.0 (CC-BY 4.0). You can use it freely with proper attribution.
What format is the data file?
The file is in CSV format (UTF-8) with columns: surname, country_iso2, carriers, and source.
How often is the data updated?
The data is updated periodically when new statistical or census sources become available from the included countries.
Can I use this data for academic research?
Yes, the data is intended for academic, journalistic, and research use. You only need to cite the source per the CC-BY 4.0 license.