# Killian (surname)

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

A surname.

| Field | Value |
|---|---|
| Origin | not recorded |
| Type | not recorded |
| People in the US (2010 Census) | 12,717 |
| US rank (2010) | 2,833 of 162,253 |
| How often | about 1 in every 24,278 people |
| Change since 2000 | +6.4% (11,947 in 2000) |
| Pronunciation | not recorded |
| Variant spellings | none recorded |

## Etymology

An anglicized spelling of Irish Cillian.

## Who carries it

Share of people named Killian 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) | 90% |
| Black (not Hispanic) | 4.4% |
| Hispanic or Latino (any race) | 2.3% |
| Asian and Pacific Islander | 0.5% |
| American Indian and Alaska Native | 0.6% |
| Two or more races | 1.8% |

## Where

Wikidata records people named Killian in the United States.

## People named Killian

- George Killian, American basketball coach
- Adam Killian, American pornographic actor

## Similar surnames

Killion, Killen, Killeen, Kilian, Killam, Klein, Kline, Kellum, Kellam, Klemm, Kaelin, Klem.

## 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.