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Castle

KAS-uhl /ˈkæsəl/

At a glance

U.S. rank 2025
#5,399 of boy names (outside the top 1,000)
Babies in 2025
17 (<0.01% of boys)
Trend
Slipping #4,141 in 2020 to #5,399 in 2025
Peak
#3,446 in 2018
First recorded
1916

Meaning of Castle

Castle traces its lineage to the Old French castel and the Latin castellum, a linguistic foundation as solid as the fortified walls it evokes, and today unfolds with quiet confidence on American birth charts—25 boys were named Castle in 2024, placing it at 899 in popularity after oscillating modestly between ranks 880 and 926 over the past decade. Pronounced KAH-səl in Britain and KAS-əl in the United States, the name carries the architectural poetry of ramparts and keeps, suggesting both steadfast protection and noble bearing. Its rarity bestows an understated distinction—a personal bastion of character—while its literal meaning invites parents to build upon a heritage of strength without losing sight of warmth and approachability. And though dry-eyed observers might wryly suggest that Castle simply betrays a parental fondness for stonework, the name’s true charm lies in its balance of historical gravitas and contemporary flair, offering a fortress of inspiration for each boy who bears it.

How to pronounce Castle

American English

British English

Popularity of Castle in the U.S.

Castle was the #5,399 boy name in the U.S. in 2025, with 17 babies. It peaked at #3,446 in 2018. It first appears in the records in 1916.

Bar and line chart: Castle in the U.S., 1916–2025. Bars: boys given the name each year, most 32 in 2018 and 17 in 2025. Line: rank among boy names, peak #3,446 in 2018, #5,399 in 2025.
  • Boys named Castle (left scale)
  • Rank among U.S. boy names (right scale, #1 at the top)
By year, 1916–2025. Source: SSA. Download: PNG · SVG
Year-by-year table, 1916⁠–⁠2025 28 rows
Castle: babies and rank among boy names in the U.S. by year
YearBabiesRankvs previous year
2025175,399▼ 1,199
2024254,200▲ 2,317
2023136,517▼ 1,072
2022175,445▼ 1,434
2021264,011▲ 130
2020244,141▲ 810
2019194,951▼ 1,505
2018323,446▲ 659
2017254,105▲ 1,684
2016155,789▼ 1,907
2015273,882▲ 1,603
2014165,485▲ 1,118
2013126,603▼ 1,741
2012194,862▲ 338
2011175,200▲ 541
2010155,741back (not recorded in 2008–2009)
2007512,369▼ 314
2006512,055▼ 2,940
200579,115back (not recorded in 2004)
200369,581back (not recorded in 2001–2002)
200069,112▲ 800
199959,912▼ 281
199859,631back (not recorded in 1965–1997)
196454,039back (not recorded in 1934–1963)
193353,642back (not recorded in 1921–1932)
192073,489▲ 679
191954,168back (not recorded in 1917–1918)
191653,897new