Staci Duncan
There are approximately 10 people named Staci Duncan living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 34,275,434 Americans.
This estimate combines SSA birth records for the first name Staci with Census Bureau frequency data for the surname Duncan. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
10
1 in 34,275,434
Named Staci
23K
Alive today
Named Duncan
149K
Alive today
US population
343M
Denominator
Estimated living: 23K
Rarity: Uncommon
Gender: Female
Peak year: 1971
Average age: 47
Top Census group: White (85.4%)
Estimated bearers: 149K
Rarity: Common
Census rank: #222
Per 100K: 43.40
Top ancestry: White (72.9%)
First name trend
Staci: popularity over time
Year-by-year SSA birth registrations for the first name Staci. The peak year was 1971 with 1,184 births. The average person named Staci today is 47 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Staci
Self-reported race and ethnicity breakdown for people with the first name Staci, from the 2020 US Census Bureau first-name tables. The largest published group is White at 85.4%.
The bar chart below shows how people with the first name Staci described their own race and ethnicity on the 2020 Census form. These are self-reported numbers, and they describe the population who happened to carry the name Staci at the time of the Census. A first name does not determine a person's race or ethnicity.
- White85.4% · 19,444
- Black or African American6.6% · 1,491
- Hispanic or Latino3.2% · 732
- Two or more races3.0% · 690
- Asian and Pacific Islander1.0% · 234
- American Indian and Alaska Native0.7% · 164
Ethnicity
Ancestry of the Duncan surname
Self-reported race and ethnicity breakdown for people with the surname Duncan, from the 2020 US Census Bureau. The largest group is White at 72.9%.
The bar chart below shows how people with the surname Duncan described their own race and ethnicity on the 2020 Census form. These are self-reported numbers, and they describe the population who happened to carry the surname Duncan at the time of the Census. A surname does not determine a person's race or ethnicity.
- White72.9% · 94,619
- Black or African American17.3% · 22,472
- Two or more races4.6% · 5,925
- Hispanic or Latino3.6% · 4,634
- American Indian and Alaska Native1.0% · 1,244
- Asian and Pacific Islander0.6% · 814
Methodology
How we calculated this
The first name Staci has a living-bearer frequency of 0.0068% of the US population, based on 23,183 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
Even though the Census Bureau now publishes first-name tables, we do not use that file as the main first-name input for this estimate. The latest first-name Census snapshot is from 2020, which makes it 6 years old today. Because Census first-name data is only released once every 10 years, SSA birth records plus CDC survival rates give a better current estimate of how many people are likely alive with the name Staci right now.
The surname Duncan appears at a rate of 43.40 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0434%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 10 people with the full name Staci Duncan. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Staci
Related
Other people with the surname Duncan
FAQ
Staci Duncan: questions and answers
How many people are named Staci Duncan?
We estimate approximately 10 people in the United States share the full name Staci Duncan. That works out to about 1 in 34,275,434 Americans. This is calculated by combining the first-name frequency (0.0068%) with the surname frequency (43.40 per 100K) against the current US population.
How rare is the name Staci Duncan?
We classify Staci Duncan as "Very Rare". About 1 in 34,275,434 Americans share this exact first and last name combination.
Is Staci a male or female name?
Staci is predominantly female. Out of 25,541 total SSA registrations, 0.2% were male and 99.8% were female. See the full Staci profile for detailed gender data.
Where does this data come from?
First-name data comes from the Social Security Administration's national baby name files (1880 to 2024). Surname data comes from the 2020 US Census Bureau decennial surname tables. Living-bearer estimates use CDC actuarial life tables to adjust for mortality. Read the full methodology.
How many Americans are named Staci Duncan?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.