# McSweeney (surname)

Source: https://namelineage.com/surname/mcsweeney/  
Publisher: Name Lineage. Counts from the US Census Bureau; origin and etymology from Wiktionary; bearers from Wikidata. Data updated 2026-11-11.

A surname from Irish.

| Field | Value |
|---|---|
| Origin | Irish |
| Type | not recorded |
| People in the US (2010 Census) | 3,807 |
| US rank (2010) | 8,639 of 162,253 |
| How often | about 1 in every 81,099 people |
| Change since 2000 | +4.6% (3,639 in 2000) |
| Pronunciation | not recorded |
| Variant spellings | none recorded |

## Etymology

Anglicized form of Irish Mac Suibhne. Compare Sweeney.

## Who carries it

Share of people named McSweeney in the 2010 US Census by the Census's own race and ethnicity groups. The Census suppresses a share when the count behind it is small.

| Group | Share |
|---|---|
| White (not Hispanic) | 93% |
| Black (not Hispanic) | 2.0% |
| Hispanic or Latino (any race) | 2.9% |
| Asian and Pacific Islander | 0.4% |
| American Indian and Alaska Native | 0.3% |
| Two or more races | 1.1% |

## Similar surnames

McSwain, McSween, McEwen, McKeen, Mason, McKinney, Magana, McCann, McGowan, McKenna, McQueen, McCain.

## How to read these numbers

A Census count is people alive and counted in 2010, not births, and names occurring fewer than 100 times are not published at all. Ethnicity shares are the Census's own categories.