The living estimate

An estimate, not a census. No one counts living people by first name. What we can do is combine two official sources honestly and show every step, so this page is the whole method, including what it cannot see.

The method

For each birth year since 1880, the SSA records how many babies were registered with a given name, separately for girls and boys. The SSA also publishes an actuarial life table (we use the 2023 period table from the 2026 Trustees Report) giving the probability of surviving from birth to any age, by sex. The estimate is the sum, over every birth year, of:

• the recorded count of the name that year, girls and boys separately,
• multiplied by the probability that a person of that sex born that year is still alive at today’s age (the life table’s l_x column: survival to age a is l_x(a)/100,000, ages 0–119).

The "about 1 in N Americans" line divides the U.S. Census Bureau’s Vintage 2025 population estimate (341.8 million) by the living estimate. Where a result says "rarer than 99.98% of living Americans," that percentage is the share of the estimated-living total carried by names more common than yours.

What the estimate cannot see

• Immigration. The name data counts US birth registrations only. Anyone who arrived with their name is invisible to it, and that is millions of people.
• Name changes. The records hold the name registered at birth. A person who later changed their name is counted under the old one.
• Suppressed small counts. Names used fewer than 5 times in a year are omitted from the source data, so the rarest spellings are undercounted.
• Period-table mortality. The life table applies one recent year’s survival rates across whole lifetimes. For people born in the early 1900s, when real mortality was higher, this overstates survivors somewhat.
• Pre-1937 under-registration. Social Security numbers did not exist before 1936, so early birth cohorts are incompletely recorded.

How we display it

Displayed values are rounded ("roughly 257,000", never 256,700) because the precision is not real. Estimates carry the word "roughly" or "we estimate" wherever they appear, and refresh with each annual data update. The life-table file and the unrounded figures live in the repository, so the arithmetic is reproducible end to end.

England & Wales has no living estimate yet; that waits for their life tables.

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