# McIlroy (surname)

Source: https://namelineage.com/surname/mcilroy/  
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) | 1,151 |
| US rank (2010) | 22,375 of 162,253 |
| How often | about 1 in every 268,241 people |
| Change since 2000 | +4.4% (1,103 in 2000) |
| Pronunciation | not recorded |
| Variant spellings | Ilroy |

## Etymology

Variant of McElroy.

## Who carries it

Share of people named McIlroy 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) | 94% |
| Hispanic or Latino (any race) | 2.8% |
| Asian and Pacific Islander | 0.7% |
| Two or more races | 2.3% |

## Where

Wikidata records people named McIlroy in the United States.

## People named McIlroy

- Douglas McIlroy, American computer scientist, mathematician, engineer, and programmer

## Similar surnames

McElroy, McCleary, McClary, McCleery, McLeroy, McLarty, McClory, McClure, McLaurin, McLaren, Mishler, McClurg.

## 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.