HUMAN NAME · NOT ON THE REGISTRY

Isobella

A human name, held in the Social Security file. It is not in the Administration’s index of agent names, and it has no classification.

Table 1. Isobella, as recorded
Sex	Female
2025 rank	15,836
2025 number	5
Peak year	2009
Peak rank	6,187
Years present	26 of 146
Dog licences, New York	–
Pet licences, Seattle	–

Statement of record

Isobella was given to 5 girls in 2025, ranking 15,836th for the year. It peaked in 2009, when it ranked 6,187th and went to 22 babies. It has appeared in 26 of the 146 years on record. Five babies received it in 2025, the smallest number the Social Security Administration will print. It has fallen 1,713 places since 2020.

Figure 1. Popularity of a Name: Isobella

Human births per million, by sex, U.S. Social Security Administration, 1880 to 2025.Agents: 0 registered. The agent series begins when the registry does.

Villain probability

38%

Basis: phonetics, by spelling. One voiced obstruent, one bilabial stop, one sibilant, ends in a vowel. The pronouncing dictionary has no entry, so the letters were sounded out by a stated rule.

Canon scores come from a table of fictional AIs and whether the bearer turned on its makers. Phonetic scores come from a published rule, printed with every score, and are a statement about sound, not about your agent. How the sound is scored.

As recorded on the Social Security card application. Names given to fewer than five babies of a sex in a year are not published, so the file is a floor.