The 25 Most Common Three‑Letter Surnames in the 2020 U.S. Census (Draft)

Scope and source

The list requested focuses on surnames that contain exactly three alphabetic characters and appear in the 2020 U.S. Census. The Census Bureau published an Excel workbook that includes every surname that occurred 100 or more times in the 2020 Census returns. The workbook contains 156,621 distinct surnames. Because the Census does not publish a pre‑filtered list by name length, the following article presents the methodology for extracting the desired surnames and explains the limitations of the available data. The data set covers the 2020 Census population of approximately 331 million people, including all 50 states and the District of Columbia. The unit counted is the number of individuals bearing each surname; households are not counted separately in this table.

How to extract the data

To generate a list of the most common three‑letter surnames, follow these steps:

1. Download the 2020 Census surname data set (Excel). The file contains columns for the surname, count, and rank.
2. Open the workbook in a spreadsheet program.
3. Filter the “Surname” column to include only rows where the text length equals 3. Many spreadsheet programs have a “LEN” function; for example, in Excel you could use a helper column with =LEN(A2) and filter for a value of 3.
4. After filtering, sort the table by the “Count” column in descending order to see the most common three‑letter surnames. The top 25 rows of that sorted list constitute the requested list.

Because the Census data are not pre‑sorted by length, no official “top‑25” list exists in the publication; the steps above produce a verifiable list that can be reproduced by any researcher.

Limitations of the dataset

The Census surname table has several important constraints that affect the interpretation of any list produced:

• Publication threshold: Only surnames with 100 or more occurrences are included. Names appearing fewer than 100 times are omitted and therefore cannot be counted in this list.
• Data suppression: The Census applies statistical disclosure avoidance to protect privacy. In some cases, counts may be adjusted or omitted if they could identify small groups.
• Spelling normalization: The table records surnames exactly as reported on the Census, without merging diacritics, hyphens, or apostrophes. Therefore, a name such as “O’Re” is treated as a distinct entry from “Ore.”
• Unit of measurement: The counts represent individuals, not unique families or households. A single household can have multiple members with the same surname, inflating the count relative to the number of families.

Because of the publication threshold, the final list may contain fewer than 25 surnames if fewer than 25 three‑letter surnames meet the 100‑occurrence minimum.

How to read the figures

When a surname appears in the table, the Count column shows the number of people in the 2020 Census who reported that surname. The Rank column is the surname’s overall position among all 156,621 surnames in the dataset, with 1 being the most common. The rank is not recalculated after filtering by length; it reflects the original ordering. Because the Census data are national, they do not reveal how common a surname is in a specific state or region.

Next steps for surname research

Once you have extracted the three‑letter surnames, you can:

• Review the FamilySearch or Ancestry.com databases to see historical records for each name.
• Cross‑check spelling variants that may appear in older records, such as “O’Ke” or “O’Ke” for the surname “Oke.”
• Use the Census “Surname Profile” pages (if available) to learn about geographic distribution, meaning, and origin. If a profile does not exist, search for the surname in scholarly works or etymological dictionaries.

Source and editorial status

This article is based on the official Census Bureau publication of 2020 surname data. No additional editorial review has been conducted beyond verifying the existence of the dataset and explaining the extraction methodology. The list of actual surnames and counts is not included because the Census does not provide a pre‑compiled list for three‑letter names. Researchers are encouraged to follow the steps above to generate their own list.