Sandy Duncan
There are approximately 28 people named Sandy Duncan living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 12,241,226 Americans.
This estimate combines SSA birth records for the first name Sandy with Census Bureau frequency data for the surname Duncan. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
28
1 in 12,241,226
Named Sandy
61K
Alive today
Named Duncan
157K
Alive today
US population
343M
Denominator
Estimated living: 61K
Rarity: Uncommon
Gender: Unisex
Peak year: 1960
Average age: 56
Estimated bearers: 157K
Rarity: Common
Census rank: #212
Per 100K: 45.83
Top ancestry: White (76.4%)
First name trend
Sandy: popularity over time
Year-by-year SSA birth registrations for the first name Sandy. The peak year was 1960 with 3,821 births. The average person named Sandy today is 56 years old.
Babies born per year
Ethnicity
Ancestry of the Duncan surname
Self-reported race and ethnicity breakdown for people with the surname Duncan, from the 2010 US Census Bureau. The largest group is White at 76.4%.
- White76.4%
- Black or African American17.3%
- Hispanic or Latino2.5%
- Two or more races2.2%
- American Indian and Alaska Native1.0%
- Asian and Pacific Islander0.5%
Methodology
How we calculated this
The first name Sandy has a living-bearer frequency of 0.0179% of the US population, based on 61,360 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Duncan appears at a rate of 45.83 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0458%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 28 people with the full name Sandy 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 Sandy
Related
Other people with the surname Duncan
FAQ
Sandy Duncan: questions and answers
How many people are named Sandy Duncan?
We estimate approximately 28 people in the United States share the full name Sandy Duncan. That works out to about 1 in 12,241,226 Americans. This is calculated by combining the first-name frequency (0.0179%) with the surname frequency (45.83 per 100K) against the current US population.
How rare is the name Sandy Duncan?
We classify Sandy Duncan as "Very Rare". About 1 in 12,241,226 Americans share this exact first and last name combination.
Is Sandy a male or female name?
Sandy is predominantly unisex. Out of 79,462 total SSA registrations, 13.1% were male and 86.9% were female. See the full Sandy 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 2010 US Census Bureau decennial surname tables. Living-bearer estimates use CDC actuarial life tables to adjust for mortality. Read the full methodology.