Rennie
Rennie is a boy's name that peaked in 1948, when it was the 1,280th most popular in the United States. It is given to both boys and girls. It has not appeared in the national data since 2025. About 1,200 Rennies are alive in the United States today, and half of them are over 60.
Popularity, 1880–2025
girls named Rennie boys named Rennie
Girls and boys called Rennie
years more girls than boys years more boys than girls
Rennie crossed from girls to boys in 1950, and has stayed there for 17 of the years counted since. At its furthest it was 76% boys, which is roughly where it still is.
The girls’ share of each year’s babies of the name, in the 25 years in which at least 25 babies got it. The line touches the middle more often than there are crossings marked: a year or two on the other side is not a name changing hands, and only a move that holds for 5 counted years and reaches 60/40 is recorded as one. All 581 names that changed sex.
By the numbers
- Total US births
- 1,939
- Estimated living today
- 1,200
- Median age today
- 60
- Peak year
- 1948
- Best rank
- 1,280th
- Rank in 2025
- unranked
- First recorded
- 1880
- Girls / boys
- 940 / 999
How old the living Rennies are
born that year still alive today
Of the 1,939 babies given the name since 1880, about 1,200 are alive — 60 in every hundred. The dotted line is the median: half were born before 1965 and half after.
An estimate, not a count. SSA births aged forward through SSA cohort life tables, which know nothing about who left the country or arrived in it — so for a name that mostly came to America rather than being born in it, this is a floor rather than a figure. Where you fall among living Americans.
Notable Rennies
- Charles Rennie Mackintosh (1868–1928)Scottish architect, designer, water colourist and artist
People named Rennie with articles in the most Wikipedia languages. Data from Wikidata (CC0).
Where Rennie is most common
Total births recorded in each state since 1910. Browse names by state.
Names of 1948
The most popular boys’ names the year Rennie peaked:
Rennie elsewhere
| Country | Spelling | Births | Best rank |
|---|---|---|---|
| Scotland boys | Rennie | 29 | 522nd |
| England and Wales boys | Rennie | 28 | 3,048th |
| Scotland girls | Rennie | 3 | 722nd |
Counts come from each country's own records and are not comparable with the US figures above, which cover different years and a different definition of a recorded name. Where a country writes the name several ways, the spellings are added together and the most common is shown. A row marked name registrations is counting something else: Portugal ranks each of a child's two given names separately, so a girl registered Maria Leonor is in both the Maria row and the Leonor row, and that figure is not a number of children.
Rennie among the living
How many people each country's register counts under the name, rather than how many were given it in any one year. Each register was read on one date, and they are not the same date.
| Country | Spelling | First forename | Any forename |
|---|---|---|---|
| Finland boys | Rennie | — | 5 |
A count of people on a register – Finland on 4 August 2026 – and not of births, so it cannot be compared with the figures above. Names with very few bearers are withheld, and a dash in the first-forename column means the register would not say rather than that nobody goes by it.
Related names
Rennie against another name
Two names on one chart, with the year one overtook the other.
Try it on yourself
Source: US Social Security Administration, national and state baby-name files, 1880–2025. Counts include only births registered with the SSA, and names with fewer than five births in a year are not published. The living estimate applies SSA cohort life tables to those births; it counts people born in the United States, so it misses anyone who arrived later and anyone who has left.