# Caiazzo (surname)

Source: https://namelineage.com/surname/caiazzo/  
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 Italian.

| Field | Value |
|---|---|
| Origin | Italian |
| Type | place, taken from where an ancestor lived or came from |
| People in the US (2010 Census) | 867 |
| US rank (2010) | 27,732 of 162,253 |
| How often | about 1 in every 356,108 people |
| Change since 2000 | +22% (710 in 2000) |
| Pronunciation | not recorded |
| Variant spellings | Cajazzo |

## Etymology

From Italian Caiazzo, possibly from an unattested intermediate form Vulgar Latin *Caiatium, ultimately from Latin Caiatia, under possible influence from Italian -azzo (“forming pejoratives and diminutives”), of uncertain origin. UTET confused it with Calatia. It is possibly related to the name Caieta (Ancient Greek Καιήτη (Kaiḗtē)), though it is not usually related to Greek while the latter is. The surname is from the place, and is also used as a diminutive of the personal name Caio.

## Who carries it

Share of people named Caiazzo 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) | 92% |
| Hispanic or Latino (any race) | 5.5% |
| American Indian and Alaska Native | 0.0% |
| Two or more races | 1.7% |

## Similar surnames

Cook, Cox, Casey, Chase, Case, Cooke, Cash, Couch, Ceja, Cheek, Causey, Cass.

## 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.