Si

femaleStatistical record

What official birth registration shows about Si: which national registrars published it, in which years, and how its recorded position changed.

No researched meaning, origin or pronunciation yet — what that means.

Si: Recorded since 1998, it reached #559 in 2003, and it was last ranked in 2018.

2registrars recorded it
21times a registrar ranked it
21years from first to last
#559highest recorded position
9groupings it qualifies for

Region

Falling

among girls in England and Wales · 1998–2018

View as table

England and Wales · Girls rank by year
Year	Rank
1998	#2701
2004	#3197
2005	#4798
2006	#4157
2007	#5201
2008	#3860
2009	#2759
2010	#1653
2011	#4049
2012	#4838
2013	#3160
2014	#4003
2016	#5785
2018	#5666

VerifiedSource: Office for National Statistics — Baby Names in England and Wales.Confidence: high.

See all England and Wales names · Source: Office for National Statistics — Baby Names in England and Wales

What the data shows

FallingEngland and Wales · Girls

Recorded in official data among girls in England and Wales in 14 of the 21 years from 1998 to 2018.

Official data from 2 national registrars across 2 regions, 1998–2018 · Office for National Statistics. Data sources

Popularity journey

First recorded1998
First recorded at #2701 among girls in England and Wales in 1998 — the earliest year that source publishes this name, not necessarily the earliest it was used.
England and Wales · Girls
Most recent2018
Most recently recorded at #5666 among girls in England and Wales, in 2018.
England and Wales · Girls

Si appears in 2 of the published lists Namewise holds. The longest record is England and Wales · Girls, which has ranked it in 14 years beginning in 1998, and has registered 77 births with the name.

Si across 2 official records

Each registrar publishes its own list, so these figures are read down a row, never across one. A position in one country is not comparable with a position in another, and Namewise never combines them into a single ranking. The birth counts do not compare across rows either, for a different reason: England and Wales registers roughly thirty times as many births a year as Northern Ireland, so a larger total says which registrar recorded it as much as how widely the name was given.

Si's first, highest and most recent recorded position in each official list, with the number of births each registrar registered with the name and its largest single year
Published list	First recorded	Highest	Most recent	Years recorded	Births registered	Most in one year
England and Wales · Girls	#2701 (1998)	#1653 (2010)	#5666 (2018)	14 of 21	77 (1998–2018)	17 (2010)
England and Wales · Boys	#3036 (2000)	#2538 (2006)	#4812 (2017)	6 of 18	26 (2000–2017)	6 (2006)

Si by decade in England and Wales · Girls

Births registered with the name in each decade of this one list, with the number of years the list covers in that decade. Bars are scaled on births a year, which is the figure that compares between decades — a decade the list only partly covers has a smaller total without being a quieter decade. Figures belong to this registrar alone and do not carry to another.

Births registered with Si in England and Wales · Girls, by decade, with years covered and the average per year
Decade	Births registered	Years covered	A year
1990s	5	1 of 10	5
2000s	28	6 of 10	5
2010sbusiest	44	7 of 10	6

Across England and Wales · Girls, the 2010s were its busiest decade — the 7 years of it this list covers, averaging 6 births a year.

See the names England and Waleshas recorded the most births with →

Si appears in

Groupings this name qualifies for under their own stated rules, from the same official statistics shown above.

Popularity data

Official popularity data is available for 2 regions, from 1998 to 2018. Highest recorded position: #559 in Republic of Ireland in 2003.

Si's recorded popularity observations by year, region and administrative category, including rank, registered births, source confidence and when each region's data was last reviewed.
Year	Region	Category	Rank	Births registered	Confidence	Status
2018	England and Wales	female	#5666	3	High	Verified
2017	England and Wales	male	#4812	3	High	Verified
2016	England and Wales	female	#5785	3	High	Verified
2015	England and Wales	male	#3004	6	High	Verified
2014	England and Wales	female	#4003	5	High	Verified
2013	England and Wales	female	#3160	7	High	Verified
2012	England and Wales	female	#4838	4	High	Verified
2011	England and Wales	female	#4049	5	High	Verified
2010	England and Wales	female	#1653	17	High	Verified
2009	England and Wales	female	#2759	8	High	Verified
2008	England and Wales	female	#3860	5	High	Verified
2008	England and Wales	male	#4432	3	High	Verified
2007	England and Wales	female	#5201	3	High	Verified
2007	England and Wales	male	#3095	5	High	Verified
2006	England and Wales	female	#4157	4	High	Verified
2006	England and Wales	male	#2538	6	High	Verified
2005	England and Wales	female	#4798	3	High	Verified
2004	England and Wales	female	#3197	5	High	Verified
2000	England and Wales	male	#3036	3	High	Verified
1998	England and Wales	female	#2701	5	High	Verified
2003	Republic of Ireland	female	#559	4	High	Verified

England and Wales hub — collected by Office for National Statistics
Republic of Ireland hub — collected by CSO Ireland

See methodology and data sources for how popularity data is collected and what "confidence" means.

What the record shows

Recorded by 2 registrars between 1998 and 2018, ranked in 18 years of that period.

Its highest recorded position is #559, first reached in 2003.

Its largest count from any one registrar is 17 births, registered in England and Wales in 2010.

1 registrar publishes it in more than one category list, holding a place in each for at least five years — an observation about those lists rather than about the name.

Its record falls into 3 separate stretches, with a longest absence of 2 years.

A second registrar first ranked it in 2003, and 5 years separate the first registrar to record it from the last.

Every figure here is counted from the seven official registrars Namewise holds. A position is only ever a place within the list that published it, and a record that thins or stops is a fact about what registrars printed — never about how many children received the name.

Where to go next

Records with a comparable body of evidence, so the catalogue can be read outward from this one. Each group states the rule it was selected by.

Next in the catalogue

The records either side of this one alphabetically.

Shyla · #845, 29y
Shylah · #1649, 19y
Sia · #391, 27y
Siam · #1651, 20y

A comparable record

Records held by the same 2 registrars, over a similar number of ranked years, whose highest position is closest to this one. A similar body of evidence — never a claim that the names themselves are alike.

Emmanuela · #559, 23y
Queen · #559, 23y
Elowen · #562, 23y
Miroslava · #556, 14y

Also first recorded in the 1990s

Records whose earliest ranking in Namewise's registrar data also falls between 1990 and 1999.

Ameer · #559, 30y
Chiamaka · #559, 26y
Chioma · #559, 29y
Emmanuela · #559, 23y

Si was ranked #559 in Republic of Ireland · Girls in 2003. These are the names immediately either side of it on that published list — a fact about the registrar's own output, not a similarity judgement.

Si and the names beside it

Two names in the same published list are measured on the same scale, in the same year, by the same registrar — so these are positions that genuinely passed each other, not a similarity judgement. Drawn from the 2,573 names with a recorded popularity standing (common, familiar, uncommon), so a name outside that set could have passed Si without appearing here.

Si moved ahead of

Martine Compare
In 2009 they stood at #5201 and #3218 in England and Wales · Girls; by 2010 that had become #1653 and #5707.
Therese Compare
In 2013 they stood at #4838 and #4838 in England and Wales · Girls; by 2014 that had become #4003 and #5691.
Ellinor Compare
In 2011 they stood at #4049 and #3185 in England and Wales · Girls; by 2012 that had become #4838 and #5876.

Moved ahead of Si

Ezra Compare
In 2013 they stood at #3160 and #5742 in England and Wales · Girls; by 2014 that had become #4003 and #1628.
Amalie Compare
In 2003 they stood at #2701 and #3848 in England and Wales · Girls; by 2004 that had become #3197 and #985.
Harper Compare
In 2004 they stood at #3197 and #3725 in England and Wales · Girls; by 2005 that had become #4798 and #2682.
Josefine Compare
In 2015 they stood at #4838 and #5876 in England and Wales · Girls; by 2016 that had become #5785 and #4096.

Moved the opposite way to Si

Ada Compare
Between 1998 and 2018 in England and Wales · Girls, Si went from #2701 to #5666 while Ada went from #3142 to #65.
Alma Compare
Between 1998 and 2018 in England and Wales · Girls, Si went from #2701 to #5666 while Alma went from #2165 to #362.
Alyssa Compare
Between 1998 and 2018 in England and Wales · Girls, Si went from #2701 to #5666 while Alyssa went from #561 to #229.
Amalie Compare
Between 1998 and 2018 in England and Wales · Girls, Si went from #2701 to #5666 while Amalie went from #3848 to #826.

Moved the same way as Si

Abigail Compare
Between 1998 and 2018 in England and Wales · Girls, Si went from #2701 to #5666 and Abigail from #22 to #77.
Aimee Compare
Between 1998 and 2018 in England and Wales · Girls, Si went from #2701 to #5666 and Aimee from #68 to #587.
Aisling Compare
Between 1998 and 2018 in England and Wales · Girls, Si went from #2701 to #5666 and Aisling from #391 to #2340.
Alex Compare
Between 1998 and 2018 in England and Wales · Girls, Si went from #2701 to #5666 and Alex from #179 to #1586.

What's not yet available

Meaning
Origin
Pronunciation
Nicknames and spelling variants

Absence from this list does not mean the name isn't genuinely meaningful or widely used — only that Namewise hasn't sourced and reviewed that content yet. Absence from a specific year or geography above does not prove zero use there either; official statistics only publish names above a minimum threshold.

Official popularity data is available for 2 regions, from 1998 to 2018. Highest recorded position: #559 in Republic of Ireland in 2003. Source data last verified 2026-07-25.

Si

Si at a glance

What the data shows

Popularity journey

Si across 2 official records

Si by decade in England and Wales · Girls

Si appears in

Popularity data

What the record shows

Where to go next

Next in the catalogue

A comparable record

Also first recorded in the 1990s

Names published alongside Si

Si and the names beside it

Si moved ahead of

Moved ahead of Si

Moved the opposite way to Si

Moved the same way as Si

Si at a glance

Si across 2 official records

Si by decade in England and Wales · Girls

Si appears in

What the record shows

Where to go next

Next in the catalogue

A comparable record

Also first recorded in the 1990s

Names published alongside Si

Si and the names beside it

Si moved ahead of

Moved ahead of Si

Moved the opposite way to Si

Moved the same way as Si