What does Costello mean and where does it come from?
Costello is derived from the Irish surname 'Mac Oisdealbhaigh', which refers to 'the son of Oisdealbhach', meaning 'from the house of the hound'. While primarily a surname, it has seen use as a given name for females, particularly in the United States. The blending of surnames into first names is a
Cultural significance
Costello has been a cherished name across cultures, particularly in Ireland-speaking communities, where it reflects values of irish.
Peak popularity
Reached #4920 in 1931 — currently #10940 in the US.
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Related Reading
Ireland-origin baby names with timeless appeal
Browse names →How else can you spell Costello?
Same sound, different look — useful if you want something slightly more distinctive
What middle names flow best with Costello?
Costello works best with short, strong middle names — one or two syllables keep the full name from becoming a mouthful
Costello Jack
One syllable · timeless choice
Costello John
One syllable · timeless choice
Costello Miles
One syllable · vintage charm
Costello Brooks
One syllable · timeless choice
Costello Gael
One syllable · timeless choice
Costello Quinn
One syllable · timeless choice
How popular is Costello right now?
Falling — down 9328 spots — currently #10940 in the US out of 135.5k tracked names
| Year | US Rank | Births | vs Prior Year |
|---|
| 2025 | #10940 | 6 | ▼ down 9328 · -99% births |
| 2023 | #1612 | 588 | ▲ up 5 · +4% births |
| 2022 | #1617 | 568 | ▲ up 5 · +6% births |
| 2021 | #1622 | 538 | — |
The story of Costello
Costello entered American naming records in 1931 and has been in use for over 93 years. With 61 total births recorded, Costello remains relatively uncommon. The name has grown more popular over time, rising from #1622 in 2021 to #1612 in 2023. Costello is used for both genders: 8% female and 92% male.
Names that peaked alongside Costello in 1931:
Costello by decade
Costello peaked in the 1930s. See all 1930s names →
| Decade | Births | |
|---|
| 1930s | 5 | |
| 1940s | 5 | |
| 1950s ★ | 23 | |
| 1970s | 11 | |
| 2000s | 12 | |
| 2010s | 5 | |
| 2020s | 6 | |
💎Costello has only 61 total recorded births since 1931 — rarer than 99% of names in our database.
What are good nicknames for Costello?
What names sound and feel like Costello?
Based on sound, origin, and style — parents who love Costello also consider these
Common questions about the name Costello
What does the name Costello mean?
Costello means "Irish" — a name rooted in Ireland tradition that carries both historical depth and timeless appeal. The meaning reflects values that have made this name endure across generations.
How popular is the name Costello?
Costello is currently a distinctive and less common name as a baby name in the US and is holding steady in popularity, a reliable classic that parents consistently choose.
What is the cultural origin of Costello?
Costello originates from Ireland tradition. Ireland names tend to carry strong cultural heritage and have spread across the world through migration, literature, and religion over centuries.
How do you pronounce the name Costello?
Costello is a three-syllable name pronounced kaw-STEL-oh. The pronunciation is straightforward for English speakers, and the name reads clearly on paper — an important practical consideration for parents.
What sibling names go well with Costello?
Costello pairs beautifully with sibling names that share a similar Ireland heritage or complement its melodic and flowing sound. Names with a similar vibe create a cohesive sibling set without matching too closely.