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Jaci

#2,912 in 2025Girls' name

Multiple documented origins; meaning depends on tradition

Jaci has been given to 5,154 babies in the U.S. since 1934. In 2025 it ranked #2,912 of 17,293 girls’ names in use. Its peak year was 2005, with 221 recorded.

Babies named Jaci, 2025

1 in 57,200

Jaci over time, 1880–2025

Girls
010020030018801900192019401960198020002020

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Jaci: meaning, origin, and history

Multiple documented origins; meaning depends on tradition

Old Tupi

What Jaci means

Jaci has more than one naming route in the cited origin entries: distinct naming traditions.

The naming story behind Jaci

A separate documented entry treats Jaci as a diminutive of Jacqueline. That is a personal-name relationship, which differs from translating the letters of the modern spelling into one universal English word. The linked origin entry identifies the context of this relationship.

One of the source’s documented entries for Jaci records a meaning of moon.

Origin, language, and formation

Jaci is used in English and Portuguese. Its origins include Old Tupi.

American usage and historical context

In the United States, 5,154 girls were recorded with the name Jaci between 1934 and 2025. Its highest annual count was 221 in 2005; its best national rank was #1,075 in 2005.

Over 5 years its rank fell, from #2,452 in 2020 to #2,912 in 2025. Over 10 years its rank fell, from #2,047 in 2015 to #2,912 in 2025.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Jaci?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 57,200
58 of 3,315,165 births
Among girls only
1 in 27,700
<0.01% of girls
Rank, 2025
#2,912
of 17,293 girls’ names in use
Coin-flip room size
39,620 kids
Even odds of a second one

Where Jaci sits on the popularity scale

Rarest published (5 a year)#1 — Olivia (13,544)

Chance at least one other child shares the name

If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 500Under 1%

Put another way: gather 39,620 children born in 2025 and it's an even bet that one of them is another Jaci. In a class of 30 the chance is Under 1%.

When Jacis were born

Half of everyone ever recorded as Jaci was born before 2003 — so the typical Jaci is around 22 today.

Median birth year
2003
About 22 years old
Biggest decade
2000s
33.0% of all use
Born in the last 25 years
57.6%
A modern name
Recorded since 1950
5,128
People you could plausibly meet
Choose a decade

2000s — 33.0% of all recorded uses (1,703).

Is Jaci rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago
+284
Places climbed
Rank vs 5 years ago
−460
Places dropped
Rank vs 10 years ago
−865
Places dropped
Births vs 10 years ago
0.60×
Fewer babies than then
Share of its own peak
26.2%
Peak was 2005 (221)
Years since peak
20
Years
Year-to-year steadiness
Steady
11.6% average annual change
Best rank ever
#1,075
2005

Spellings of Jaci

Jaci is not the most common spelling — Jane is, with 19.2% against Jaci's 0.26%.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Jaci is used

Across 2016–2025, Jaci was most concentrated in Louisiana — about 1 in 1,695 girls, against 1 in 15,244 across all states with data. It was least common in Florida (1 in 100,000).

159 per 100,000

Most concentrated

  1. 1Louisiana1 in 1,695
  2. 2Mississippi1 in 5,556
  3. 3Oklahoma1 in 9,091
  4. 4Arkansas1 in 11,111
  5. 5Texas1 in 16,667
  6. 6Iowa1 in 25,000
  7. 7Alabama1 in 33,333
  8. 8Kentucky1 in 33,333

Shading is the share of that state's recorded girls given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings.

Jaci around the world

Where Jaci ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • England & Wales
    2005–2005
    #3,970
    in 2005
  • Canada
    2006–2012
    #3,249
    in 2012
  • South Australia
    1995–1996
    #712
    in 1996

Popularity data from Office for National Statistics, Statistics Canada and Consumer and Business Services (South Australia). ONS data under Open Government Licence v3.0. StatCan data under Statistics Canada Open Licence. CBS SA data under CC BY 4.0.

Jaci by the numbers

The raw record for each sex the name is used for.

As a girl's name

Rank in 2025
#2,912
Trend vs 5 yrs ago
Down 460
Best rank ever
#1,075
2005
Peak year
2005
221 that year
First recorded
1934
Last recorded
2025
All-time count
5,154
Count in 2025
58

Names similar to Jaci

Matched on shared beginnings and endings, similar length, and comparable popularity.

JacyJackJacieJaceyJaceLaciKaciJaceeJackyJackiJacindaJacintaMaciJacelynJacqueJacobJaclynnGraciJackelynJacklynJacalynJaclynJacklynnJackeline

Names with a curve like Jaci

Not spelling — timing. These names rose, peaked and faded in the same years as Jaci, so they read as being from the same moment even when they look nothing alike.

AnisaMeliaJackelineKalliKeeleyAnjaliKeilaPriscilaMagalyJaynaVeronikaMarlen

Sibling names for Jaci

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Jaci

Top names of 2005, Jaci's peak yearThe 2000s in fullOther names that peaked in 2005Girls' names starting with JPortuguese NamesUncommon Portuguese Girl Names