NameTides

Kolby

Kolby was the #1,222 boys' name in the US in 2025 (165 babies), and #1,359 in England & Wales and #1,944 in Canada.

Kolby as a boy’s name

  • US
  • England & Wales
  • Scotland
  • Northern Ireland
  • Canada
Kolby as a boy’s name, US, England & Wales, Scotland, Northern Ireland, CanadaBabies per 1,000 in the published list, 1880–2025, for US, England & Wales, Scotland, Northern Ireland, Canada. Gaps mark years with too few babies to be published.00.250.50.75118801900192019401960198020002020USEngland & WalesCanada
Kolby as a boy’s name, US, England & Wales, Scotland, Northern Ireland, CanadaBabies per 1,000 in the published list, 1880–2025, for US, England & Wales, Scotland, Northern Ireland, Canada. Gaps mark years with too few babies to be published.00.250.50.7511880192019602000
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 & WalesScotlandNorthern IrelandCanada
2025#1,222 (165)#1,359 (20)——#1,944 (10)
2024#1,262 (156)#1,322 (20)#727 (3)—#1,205 (19)
2023#1,197 (167)#1,042 (28)#614 (4)#312 (5)#1,496 (13)
2022#1,237 (159)#1,609 (15)#703 (3)—#1,061 (21)
2021#1,262 (151)#1,329 (19)#533 (5)—#1,230 (17)
2020#1,144 (170)#1,051 (26)——#1,261 (16)
2019#1,234 (153)#1,506 (16)#516 (5)—#1,152 (18)
2018#1,086 (182)#1,382 (18)#595 (4)—#938 (24)
2017#1,141 (166)#3,040 (6)——#971 (23)
2016#950 (219)#1,903 (12)——#1,198 (17)
2015#828 (272)#1,673 (14)——#1,007 (21)
2014#776 (300)#1,935 (11)#439 (7)—#575 (47)
2013#749 (304)#1,462 (16)—#398 (3)#726 (33)
2012#791 (286)#2,721 (7)——#662 (37)
2011#705 (325)#3,300 (5)——#676 (36)

Kolby as a girl’s name

  • US
  • Canada
Kolby as a girl’s name, US, CanadaBabies per 1,000 in the published list, 1880–2025, for US, Canada. Gaps mark years with too few babies to be published.00.030.050.080.118801900192019401960198020002020US
Kolby as a girl’s name, US, CanadaBabies per 1,000 in the published list, 1880–2025, for US, Canada. Gaps mark years with too few babies to be published.00.030.050.080.11880192019602000
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
YearUSCanada
2025#3,577 (42)—
2024#3,892 (38)—
2023#3,428 (46)—
2022#4,907 (27)—
2021#5,091 (25)#3,280 (5)
2020#5,314 (23)—
2019#5,163 (25)—
2018#5,007 (26)—
2017#4,147 (35)—
2016#3,923 (38)#3,294 (5)
2015#4,144 (35)—
2014#3,226 (50)#3,316 (5)
2013#3,367 (47)—
2012#6,576 (19)—
2011#4,151 (35)—

The tide so far

  • Peaked in the US in 2001 at #359.
  • Holding steady over the last five years.
  • First recorded in the US in 1968.
  • In 2025, 20% of US babies named Kolby were girls.

How common is it?

about 1 in 10,000 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 10,000rare
England & WalesBoys2025about 1 in 14,000rare
CanadaBoys2025about 1 in 16,000rare
USGirls2025about 1 in 38,000rare

Next year

On its recent trend, Kolby is likely to hold steady in the US in 2026: about 1 in 10,000 baby boys. Likely range 1 in 9,200 to 1 in 11,000.

Estimate, not an official figure. How we estimate.

Across the US

Kolby 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: #1,133ILMichigan: #1,113MINew York: #1,760NYMassachusetts: fewer than 5 babiesMAOregon: 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: #801OHPennsylvania: #1,231PANew Jersey: fewer than 5 babiesNJConnecticut: fewer than 5 babiesCTRhode Island: fewer than 5 babiesRICalifornia: #1,687CAUtah: fewer than 5 babiesUTColorado: fewer than 5 babiesCONebraska: fewer than 5 babiesNEMissouri: #648MOKentucky: #526KYWest Virginia: fewer than 5 babiesWVVirginia: #971VAMaryland: fewer than 5 babiesMDDelaware: fewer than 5 babiesDEArizona: #927AZNew Mexico: fewer than 5 babiesNMKansas: fewer than 5 babiesKSArkansas: fewer than 5 babiesARTennessee: fewer than 5 babiesTNNorth Carolina: #936NCSouth 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: #990GAHawaii: fewer than 5 babiesHITexas: #1,415TXFlorida: #1,256FL
Kolby (boys) rank in each state, 2025. Hatched states recorded fewer than 5 babies.
  • #1–10
  • #11–50
  • #51–100
  • #101–500
  • below #500

Across Canada

ProvinceYearRankBabies
Ontario2024#1,5176

Kolby (boys): rank in each province’s latest list. Only Quebec and Ontario publish full name lists; Ontario’s latest list is a year behind.

Spellings

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

SpellingWhereSexLatest rankBabies
KolbyCanadaGirls—too few
KolbyCanadaBoys#1,94410
KolbyEngland & WalesBoys#1,35920
KolbyNorthern IrelandGirls—too few
KolbyNorthern IrelandBoys—too few
KolbyScotlandBoys—too few
KolbyUSGirls#3,57742
KolbyUSBoys#1,222165