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👤 Demographics Analysis Python Data Visualization Contemporary Dataset

One Filipino In 48 Is Called Mary

The 1,000 commonest forenames in the Philippines, covering 74,581,757 people. The file states no collection date — but multiplying its two count columns together recovers a population of 106,009,905, which dates it itself.

2,229,082
People called Mary, one in 48
38.57%
Of the covered population in 100 names
1.21%
Disagreement between the file's two count columns
29.65%
Of Filipinos have a name outside this list
Data Scope
Top 1,000 Most Popular Filipino Names
Tech Stack
Python Pandas Chart.js HTML/CSS
Key Takeaways

Mary is carried by 2,229,082 people — one Filipino in 48, and 2.1% of the whole country. The second commonest name, Maria, has 2.55 times fewer.

  • The file states no collection date. Incidence counts bearers and frequency says one in N people, so their product recovers the population it was compiled against — and it agrees to within 1.21% across all 1,000 rows. The median, 106,009,905, puts the snapshot at roughly 2019-2020. That is an inference from the data, not a claim by the source.
  • Names are concentrated: 9.86% of the covered population is in ten names and 38.57% in a hundred. But the thousand names still leave 29.65% of the country — 31,428,148 people — carrying something else.
  • The previously published claim that R and A are the commonest initials is half right. By bearers, R leads at 15.59%, then M and J; A is 4th. Those four cover 55.57% between them, and 3 letters begin no name here at all.
  • 520 names are recorded female against 480 male, yet the male names cover more people — 80,942 bearers per name against 68,711. Women's names are more varied, not fewer.
  • One snapshot, no regions, no ages, no surnames, no trend. Anything about how Filipino naming is changing is outside this data.

A Fifth Of A Percent Of Names, A Third Of The People

Cumulative share of the covered population as the list lengthens. The curve is steep at the start and long in the tail: the thousandth name, Melecio, still has 16,692 bearers.

Cumulative share of covered population by rank

Top ten names
9.86%

Of the 74,581,757 people this list covers.

Top hundred
38.57%

28,765,796 people — 27.14% of the whole country.

Top five hundred
82.68%

Half the list carries four-fifths of its people. The other half is the tail.

The File Dates Itself

This is the most useful thing in the dataset and it is not one of its columns. Incidence is a count of bearers; frequency is one in N people. Multiply them and you recover the population the file was compiled against — which has to be the same number in every row, and is.

Population implied by each name's own two columns

Implied population
106,009,905

Median across all 1,000 rows.

Spread across the file
1.21%

105,713,344 to 106,995,936, which is the frequency denominator being rounded to a whole number and nothing else.

What it implies
≈2019-20

The Philippine population passed 106 million around then. The file gives no date; this is inferred from it, and a check fails if the two columns ever stop agreeing to within 2%.

R, Then M, Then J

People per first letter, not names per first letter — the two give different orders. 3 letters of the alphabet begin no name in this list.

People per first letter, top thousand names

R
15.59%

11,628,779 people. Reynaldo, Ronaldo, Rosario, Roberto, Rowena and so on.

M
15.08%

Mary and Maria between them carry more than any other pair on the list.

A
4th

Not second, as this page previously said. The top four initials cover 55.57% of everyone in the list.

More Women's Names, Fewer Women Per Name

The list holds more female names than male ones and fewer female bearers, which means each male name is doing more work. It says nothing about the sex ratio of the country — it is about how widely names are shared.

Names and bearers by recorded gender

Female names
520

Carrying 35,729,816 people, or 68,711 each.

Male names
480

Carrying 38,851,941 people, or 80,942 each.

Crowding ratio
1.18×

A male name on this list is carried by 1.18 times as many people as a female one.

The Names It Is Not Sure About

Each row carries the share of bearers of the stated gender. For most names that is 99% or 100%. For 37 of them it is below 90%, and those are the interesting ones.

Names whose gender split is not near-unanimous

Ambiguous names
37

Of 1,000, where fewer than 90% of bearers share the recorded gender.

Remy
51/49

The closest to even in the file: 51% male and 49% not.

The one-letter entry, H
25,745

Bearers, at rank 707. It may be a real forename, an initial recorded as one, or an artefact of how the source extracted names. It is named here rather than charted as a name.

What This Data Cannot Say

More is missing here than on most pages in this project, so it is worth being blunt about it.

There is no time dimension

One snapshot. No name can be shown rising or falling, and nothing here supports a claim about naming fashions. A name common among the living is not a name common among the newborn, and this file cannot separate the two.

There are no regions and no ages

National totals only. Nothing distinguishes Ilocos from Mindanao, or a name popular in 1960 from one popular in 2015, though the Spanish-derived names near the top — Maria, Antonio, Reynaldo — are the kind that skew older.

It is forenames only

Philippine surnames are a much stranger subject: most were assigned administratively from a catalogue in 1849, which is why surnames cluster geographically in a way forenames do not. None of that is in this file.

The methodology is undocumented

The source does not say how incidence was counted or from what. The internal agreement between its two columns is strong evidence they were derived consistently, which is not the same as evidence that they are right.

Method

One small file, and one cross-check it makes possible.

The two count columns are checked against each other

Incidence times frequency must recover the same population in every row. A check fails if any row falls more than 2% from the median, which allows for the denominator being a rounded whole number and nothing more. All 1,000 rows pass, from 105,713,344 to 106,995,936.

The ranking is checked for monotonicity

A list ordered by rank must have incidence falling as rank rises. A name further down with more bearers would mean one of the two columns had been misread, and it is the kind of fault that produces a chart which still looks reasonable.

The ambiguity threshold is a stated constant

Ninety per cent, written once in the fetcher, used for the flag and for the count the page quotes. A check asserts the flagged list and the threshold have not drifted apart.

The date is presented as an inference

The page says the file dates to roughly 2019-2020 because the population it implies is 106,009,905. It does not say the file is from 2019, because the file does not say that.

Nothing is extrapolated to the country

The list covers 70.35% of the implied population. Shares are given either of the covered people or of the implied total, and each is labelled, because those two denominators differ by almost a third.

Key Findings & Summary

  • Mary is carried by 2,229,082 people, one Filipino in 48 and 2.1% of the country — 2.55 times the second name, Maria.
  • The file's two count columns agree to within 1.21% across all 1,000 rows, implying a population of 106,009,905 and dating an undated snapshot to about 2019-2020.
  • 38.57% of the covered population is in a hundred names, yet 29.65% of Filipinos — 31,428,148 people — carry a name outside the thousand.
  • R is the commonest initial at 15.59%, not A, which is 4th; 3 letters begin no name at all.
  • There are more female names (520) than male (480) but each male name carries 1.18 times as many people.
  • 37 names are not clearly one gender, Remy most of all at 51/49.

Sources & Citations

Every figure on this page traces to one of these, through a CSV in data/ph-names/. Each is checked against its source query on every build.

The 1,000 most common Philippine forenames with the number of bearers, a 1-in-N frequency, and the gender split for each — One snapshot with no stated collection date, no time dimension and no regional split. Multiplying incidence by frequency implies a population base of about 106.0 million, which dates it to roughly 2019-2020 — an inference from the data, not a claim by the source.

Prefer the plain-English version?

I wrote a companion post — “One In 48 Is Called Mary, And The File Told Me Its Own Age” — in simple, everyday words.

Read the blog post →