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Jo

Girls 99% Boys 1% Recorded 1881-2025

Jo is given to both girls and boys: 36 girls and 8 boys were given it in 2025 (#4,027 among girls’ names and #9,269 among boys’, #6,151 among all names counting both); 180,911 Americans have been recorded with it since 1881 (Social Security Administration, published May 2026).

An estimated 112,000 Americans named Jo and born in the U.S. are alive in 2026 (62% of everyone recorded); the median is 72 years old and half are between 67 and 78.

Babies named Jo each year, first recorded in 1881
Jo, 1880-2025; highest in 1954.2k4k6k8k10k188019001920194019601980200020251954 peak: 8,077
Jo, 1880-2025; highest in 1954.2k4k6k8k10k188019001920194019601980200020251954 peak: 8,077
Jo, 1880-2025; highest in 1954.2k4k6k8k10k18801905193019551980200520251954 peak: 8,077
Jo, 1880-2025; highest in 1954.2k4k6k8k10k18801930198020251954 peak: 8,077

Girls and boys together; gaps are years SSA did not record (fewer than 5 births).

Births of Jo by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.

What does Jo mean?

Wiktionary, English section

Jo is “a female given name.”

Clipping or hypochoristic form of various female given names beginning with Jo..., primarily Joan, Joanna, etc. but also Josephine and Jolene. Doublet of Ivanka, Jan, Janelle, Janet, Janey, Janine, Jeanette, Jeanie, Jeannette, Jeannine, Jen, Jenna, Jenny, Jessie, Jody, Juanita, Shanae, Sinead, and Vanna in reference to the first derivation.

/d͡ʒoʊ/

From Wiktionary, the free dictionary, entry Jo (English), CC BY‑SA 4.0. Quoted from the entry; text after a cross-reference to another sense is left out.

Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).

How popular is Jo?

#4,027 among girls’ names, 2025

Jo rose from #5,041 in 2015 to #4,027 in 2025 among girls’ names; its share of girls born rose from 15.1 to 22.4 per million.

8,077 babies in 1954, the peak

Jo peaked in 1954, when 8,077 babies were given it (8,052 girls, #53 among girls’ names). The 44 births of 2025 (girls and boys) are under 1% of that peak.

Girls and boys named Jo each year
Jo: girls and boys given the name each year2k4k6k8k10k18801900192019401960198020002025GirlsBoys
Jo: girls and boys given the name each year2k4k6k8k10k18801900192019401960198020002025GirlsBoys
Jo: girls and boys given the name each year2k4k6k8k10k1880190519301955198020052025GirlsBoys
Jo: girls and boys given the name each year2k4k6k8k10k1880193019802025GirlsBoys

Births by sex.

Jo by year
YearBirthsRankPer 1,000 girls
202536#4,0270.02
202434#4,2460.02
202347#3,4000.03
202236#4,0730.02
202142#3,6400.03
202035#4,0470.02
201934#4,2080.02
201840#3,7570.02
201740#3,8070.02
201634#4,2970.02
Every recorded year (144)
YearBirthsRankPer 1,000 girls
201527#5,0410.02
201418#6,8400.01
201315#7,9460.01
201218#6,9830.01
201114#8,3910.01
20106#15,869under 0.01
200918#7,1820.01
200817#7,5530.01
200718#7,2300.01
200625#5,4520.01
200517#6,9700.01
200418#6,6110.01
200329#4,4620.02
200229#4,3250.02
200128#4,3680.02
200024#4,8650.01
199945#2,9530.03
199852#2,6270.03
199758#2,3140.03
199644#2,7710.03
199558#2,2880.03
199464#2,1270.04
199360#2,1960.03
199270#1,9670.04
199173#1,9160.04
199085#1,7210.04
198989#1,5730.05
1988111#1,3050.06
1987132#1,1300.08
1986109#1,2510.06
1985171#9260.10
1984210#7690.12
1983207#7710.12
1982267#6650.16
1981340#5470.20
1980349#5400.21
1979306#5890.19
1978323#5490.21
1977365#5090.24
1976417#4610.28
1975520#3920.36
1974587#3660.40
1973665#3320.46
1972722#3250.47
1971910#3020.55
19701,103#2720.63
19691,164#2510.69
19681,325#2260.81
19671,409#2140.85
19661,590#2000.94
19651,852#1831.0
19642,052#1841.1
19632,190#1771.1
19622,449#1671.2
19612,795#1521.4
19603,371#1341.7
19594,052#1152.0
19585,226#912.6
19575,718#832.8
19566,953#693.5
19557,656#583.9
19548,052#534.1
19537,513#544.0
19527,092#553.8
19516,001#673.3
19505,676#643.3
19495,802#603.4
19485,986#563.5
19476,724#513.8
19465,828#533.7
19454,224#603.2
19444,226#613.2
19434,300#633.1
19424,175#653.1
19413,757#663.1
19403,427#723.0
19393,524#703.2
19383,172#782.9
19373,226#733.0
19363,292#723.2
19353,296#733.1
19343,257#753.1
19332,541#902.5
19322,388#1032.2
19312,086#1162.0
19301,871#1311.7
19291,593#1401.4
19281,168#1791.0
1927974#2030.82
1926815#2220.69
1925635#2640.52
1924534#2850.43
1923385#3340.32
1922302#3760.25
1921259#4170.21
1920231#4440.19
1919227#4370.20
1918199#4790.17
1917145#5630.13
1916152#5390.15
1915128#5710.13
1914103#5500.14
191389#5380.14
191268#5930.12
191141#6800.10
191040#6760.10
190941#6100.12
190846#5480.14
190733#6600.10
190634#6190.12
190534#6060.12
190426#6920.09
190329#6170.11
190225#6780.09
190119#7540.08
190024#7530.08
189917#8010.07
189817#8300.07
189716#8110.07
189620#7150.08
189511#1,0170.05
189415#8020.07
18939#1,0480.04
189213#8460.06
189115#7100.08
18907#1,1460.04
188911#8240.06
18887#1,0840.04
18875#1,2220.03
188614#6210.10
188511#6760.08
18847#8880.05
18839#6690.08
18815#8810.05

Download Jo’s births by year (CSV)

Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.

Is Jo a boy’s or a girl’s name?

Of the 180,911 Americans recorded as Jo, 99% are girls and 1% boys.

Share of girls among babies named Jo, by year
Girls fill from the bottom, boys from the top.100%50%0%18801900192019401960198020002025Boys 18%Girls 82%
Girls fill from the bottom, boys from the top.100%50%0%18801900192019401960198020002025Boys 18%Girls 82%
Girls fill from the bottom, boys from the top.100%50%0%1880193019802025Boys 18%Girls 82%
Girls fill from the bottom, boys from the top.100%50%0%1880193019802025Boys 18%Girls 82%

Years with fewer than 20 babies given the name are left blank.

Girls and boys named Jo: the SSA national file counts each sex separately.

How many people are named Jo, and how old are they?

112,000 alive in 2026, estimated

That is 62% of the 180,911 Americans ever recorded as Jo. The median Jo alive today is 72 years old; half are between 67 and 78.

The 2020 Census counted 57,903 people named Jo (54,854 women and girls, 3,049 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 130,372 born in the U.S. The Census count is 56% below that prediction. Possible reasons: people who give a short form or another name to the Census, and a survival estimate that can run high.

Alive today, by age

100-10941
90-993,630
80-8919,100
70-79 (median)49,700
60-6926,400
50-598,120
40-492,540
30-39767
20-29321
10-19184
0-9342

Alive today, by generation

By generation
GenerationBornAlive
Silent Generation1928-194519,200
Baby Boomers1946-196477,000
Generation X1965-198012,700
Millennials1981-19962,200
Generation Z1997-2012536
Generation Alpha2013-2025499

An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.

Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).

Where are babies named Jo born?

The states with the most babies named Jo are Texas, New York and California, with 23% of its births recorded by state since 1910.

States with the most births: girls and boys together; rank among girls’ names in the state in 2025
StateSince 1910Rank, girlsvs. national
Texas19,470not ranked1.8×
New York12,229not ranked0.8×
California9,507#2,6270.8×
Ohio8,336not ranked0.9×
Illinois7,819not ranked0.8×
Pennsylvania7,267not ranked0.6×
Tennessee6,165not ranked1.4×
North Carolina6,152not ranked1.1×
Alabama5,651not ranked1.3×
Kentucky5,398not ranked1.4×

Where Jo is more common than its national share predicts

Relative to its national share, Jo is most over-represented in Texas: since 1910 it was given 1.8 times as often there as its national share each year would predict.

Texas1.82×
Oklahoma1.79×
Arkansas1.63×
Tennessee1.42×
Kentucky1.35×
Alabama1.30×
Louisiana1.30×

Bars start at 1× (as often as the national share predicts).

States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among girls’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Jo with the births its national share predicts year by year, for states with at least 100 births of the name.

Names spelled alike

Of these 8 names spelled alike, given to 803,879 babies since 1880, Jo is the second most given (23% of them). In 2025 it was given to 44 of their 1,199 babies (3.7%), the fifth most given that year.

Jo and the names spelled alike
NameSince 1880Births 2025Peak year
Joe464,5742301936
Jo180,911441954
Joy143,3247741957
Joi6,095481981
Joye3,48161932
Joie3,210612019
Joya1,796251990
Joia488111988

Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.

Names that rose and fell in the same decades as Jo

Names whose births rose and fell across the same decades, measured on each decade’s share of births.

NameRecorded1880-2025
Patricia1,578,584
Janet558,291
Janice407,605
Marcia133,604
Peggy293,563
Nancy1,007,393

Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.

More about Jo and names like it

  1. Compare Jo and JoeBirths, ranks, peak and the living estimate side by side.
  2. The most given names of the 1950sJo peaked in 1954.
  3. Texas’s most given namesThe state where SSA recorded the most babies named Jo since 1910.
  4. The top names of 1954The year the most babies were named Jo.
  5. The names of the Baby BoomersMost people named Jo alive today were born 1946-1964.
  6. Names starting with JMost given first.

Compare Jo with another name