How Many People Are Named Tammi?
An estimated 11,909 people in the United States have the first name Tammi. It is almost exclusively a female name. The average bearer is 56 years old, and Tammi peaked in popularity in 1968 with 874 births that year.
Below you will find a full statistical profile of Tammi as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Tammi paired with any surname.
Estimated Living Americans
11,909
About 1 in 28,781 people in the U.S.
Rarity
Uncommon
Predicted Gender
Female
100.0% confidence
Average Age
56
years old
Peak Year
1968
874 births
Total Registered
13,884
since 1880
Gender Distribution for Tammi
Tammi is almost exclusively a female name. Out of 13,884 total births registered, 100.0% were female.
Tammi as a female name
Ranked #16,343 in 2013
6 female births in 2013
Peak: 1968 (874 births)
Tammi: Popularity Over Time
SSA records for Tammi span from the 1950s to the 2010s, covering 7 decades of naming data. The most popular decade for this name was the 1960s, when 6,514 babies were registered. Tammi has declined significantly from its peak in the 1960s. Recent registrations are a fraction of what they were at the name's height.
Tammi by Decade
How has Tammi tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Tammi by State
Birth registrations for Tammi span all 49 states and territories in the SSA database. The highest counts are in California, Pennsylvania, Texas. The lowest are in Wyoming, Rhode Island, Delaware. On average, about 247 Tammis were registered per state.
Tammi + Last Name Combinations
How many people share a full name with Tammi as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Tammi
Other first names starting with T with a similar number of bearers.
Tammi: Questions and Answers
How many people in the U.S. are named Tammi?
We estimate approximately 11,909 people named Tammi are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 28,781 Americans share this first name.
Is Tammi a common name?
Tammi is classified as "Uncommon" and is more popular than 97.9% of all first names in the SSA database. A total of 13,884 births have been registered with this name since 1880.
When was Tammi most popular?
Tammi reached peak popularity in 1968, when 874 babies were given this name. The average age of a living person named Tammi is approximately 56 years old, reflecting when the name was most commonly given.
Is Tammi a female name?
Tammi is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Tammi Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Tammi Smith, Tammi Johnson, Tammi Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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