NameTides

Caio

Caio was the #3,314 boys' name in the US in 2025 (35 babies), and #873 in England & Wales.

Caio as a boy’s name

  • US
  • England & Wales
  • Ireland
  • Canada
Caio as a boy’s name, US, England & Wales, Ireland, CanadaBabies per 1,000 in the published list, 1880–2025, for US, England & Wales, Ireland, Canada. Gaps mark years with too few babies to be published.00.060.130.190.2518801900192019401960198020002020England & WalesUS
Caio as a boy’s name, US, England & Wales, Ireland, CanadaBabies per 1,000 in the published list, 1880–2025, for US, England & Wales, Ireland, Canada. Gaps mark years with too few babies to be published.00.060.130.190.251880192019602000
Babies per 1,000 of the same sex in each published list. Breaks in a line are years with too few babies to be published.
Show the numbers
YearUSEngland & WalesIrelandCanada
2025#3,314 (35)#873 (36)——
2024#3,693 (30)#1,076 (27)#655 (4)—
2023#3,055 (40)#929 (33)——
2022#3,774 (29)#758 (43)—#2,810 (5)
2021#3,497 (32)#1,023 (28)—#2,491 (6)
2020#4,141 (24)#1,111 (24)#496 (6)—
2019#3,347 (34)#1,253 (20)—#2,756 (5)
2018#3,446 (32)#958 (30)——
2017#4,224 (24)#1,068 (27)——
2016#7,157 (11)#946 (31)—#2,718 (5)
2015#4,295 (23)#1,046 (27)——
2014#4,538 (21)#916 (32)——
2013#3,582 (29)#931 (31)——
2012#4,003 (25)#1,051 (26)—#1,971 (8)
2011#4,509 (21)#929 (31)——

The tide so far

  • Peaked in the US in 2023 at #3,055.
  • Rising over the last five years.
  • First recorded in the US in 1990.

How common is it?

about 1 in 50,000 baby boys in the published US list for 2025.

In a group of 1,000 children born that year, you would expect to meet fewer than 1. How we work this out.

How common, country by country

WhereSexLatest yearShareVerdict
USBoys2025about 1 in 50,000rare
England & WalesBoys2025about 1 in 7,600uncommon

Next year

On its recent trend, Caio is likely to hold steady in the US in 2026: about 1 in 50,000 baby boys. Likely range 1 in 38,000 to 1 in 66,000.

Estimate, not an official figure. How we estimate.

Across the US

Caio by state, 2025Alaska: fewer than 5 babiesAKMaine: fewer than 5 babiesMEWisconsin: fewer than 5 babiesWIVermont: fewer than 5 babiesVTNew Hampshire: fewer than 5 babiesNHWashington: fewer than 5 babiesWAIdaho: fewer than 5 babiesIDMontana: fewer than 5 babiesMTNorth Dakota: fewer than 5 babiesNDMinnesota: fewer than 5 babiesMNIllinois: fewer than 5 babiesILMichigan: fewer than 5 babiesMINew York: fewer than 5 babiesNYMassachusetts: #789MAOregon: fewer than 5 babiesORNevada: fewer than 5 babiesNVWyoming: fewer than 5 babiesWYSouth Dakota: fewer than 5 babiesSDIowa: fewer than 5 babiesIAIndiana: fewer than 5 babiesINOhio: fewer than 5 babiesOHPennsylvania: fewer than 5 babiesPANew Jersey: fewer than 5 babiesNJConnecticut: fewer than 5 babiesCTRhode Island: fewer than 5 babiesRICalifornia: #2,471CAUtah: fewer than 5 babiesUTColorado: fewer than 5 babiesCONebraska: fewer than 5 babiesNEMissouri: fewer than 5 babiesMOKentucky: fewer than 5 babiesKYWest Virginia: fewer than 5 babiesWVVirginia: fewer than 5 babiesVAMaryland: fewer than 5 babiesMDDelaware: fewer than 5 babiesDEArizona: fewer than 5 babiesAZNew Mexico: fewer than 5 babiesNMKansas: fewer than 5 babiesKSArkansas: fewer than 5 babiesARTennessee: fewer than 5 babiesTNNorth Carolina: fewer than 5 babiesNCSouth Carolina: fewer than 5 babiesSCDistrict of Columbia: fewer than 5 babiesDCOklahoma: fewer than 5 babiesOKLouisiana: fewer than 5 babiesLAMississippi: fewer than 5 babiesMSAlabama: fewer than 5 babiesALGeorgia: fewer than 5 babiesGAHawaii: fewer than 5 babiesHITexas: fewer than 5 babiesTXFlorida: #1,831FL
Caio (boys) rank in each state, 2025. Hatched states recorded fewer than 5 babies.
  • #1–10
  • #11–50
  • #51–100
  • #101–500
  • below #500

Spellings

Official statistics count each spelling separately, so we show them side by side rather than adding them up.

SpellingWhereSexLatest rankBabies
CaioCanadaBoys—too few
CaioEngland & WalesBoys#87336
CaioIrelandBoys—too few
CaioNorthern IrelandBoys—too few
CaioUSBoys#3,31435