# Klinefelter (surname)

Source: https://namelineage.com/surname/klinefelter/  
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) | 1,273 |
| US rank (2010) | 20,758 of 162,253 |
| How often | about 1 in every 242,534 people |
| Change since 2000 | +2.1% (1,247 in 2000) |
| Pronunciation | not recorded |
| Variant spellings | none recorded |

## Who carries it

Share of people named Klinefelter 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) | 2.1% |
| Asian and Pacific Islander | 1.6% |
| Two or more races | 1.9% |

## Similar surnames

Klump, Klumpp, Kellenberger, Klemp, Kleinberg.

## 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.