Jillian vs Sophia
How Jillian and Sophia compare across 146 years of US Social Security Administration baby-name records — popularity history, peak years, current rank, and which name overtook which.
US Popularity History — Side-by-Side
Annual US births named Jillian (girls) vs Sophia (girls), from US Social Security Administration national records.
Source: US Social Security Administration. Names appearing fewer than 5 times per year are suppressed by SSA.
Quick Stats
| Metric | Jillian | Sophia |
|---|---|---|
| Peak year (most US births) | 1982 — 3,056 girls | 2012 — 22,335 girls |
| Peak rank | #96 | #1 |
| Most recent rank (2020) | #956 (267 births) | #5 (12,561 births) |
| Total US births since 1880 | 37,667 | 388,433 |
| Last 10 years (2011–2020) | 7,177 | 133,616 |
Peak comparison takeaway
At its all-time peak, Sophia reached 22,335 US births in 2012 — 19,279 more than Jillian's peak count.
Crossover Years
Years where one name first passed the other in annual US births. A name "winning" in a year means it had more births that year, not necessarily a higher rank.
| Year | New leader | Jillian births | Sophia births |
|---|---|---|---|
| 1997 | Sophia | 0 | 3,640 |
Strongest States — Last 10 Years
States where each name ranked highest, from SSA's state-level dataset. Lower average rank = name appears closer to the top of that state's girls-name list.
Jillian — top 5 states
| # | State | Avg rank | Births |
|---|---|---|---|
| 1 | Connecticut | #394 | 41 |
| 2 | Louisiana | #534 | 56 |
| 3 | Missouri | #573 | 81 |
| 4 | Michigan | #577 | 116 |
| 5 | Kansas | #595 | 27 |
Sophia — top 5 states
| # | State | Avg rank | Births |
|---|---|---|---|
| 1 | New Mexico | #3 | 769 |
| 2 | New York | #3 | 8,010 |
| 3 | Illinois | #3 | 4,861 |
| 4 | Arizona | #4 | 3,118 |
| 5 | Massachusetts | #4 | 2,790 |
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Data & methodology
Source: US Social Security Administration national baby names dataset 1880–2025 (CC0 public domain). Names with fewer than 5 occurrences in a given year are suppressed by SSA. State-level coverage runs 1910–2025. Crossover detection compares annual birth counts (not ranks) for each year both names appear. Methodology: see full notes. More comparisons →