Isa vs Emily
How Isa and Emily 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 Isa (boys) vs Emily (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 | Isa | Emily |
|---|---|---|
| Peak year (most US births) | 2025 — 253 boys | 1999 — 26,542 girls |
| Peak rank | #933 | #1 |
| Most recent rank (2025) | #933 (253 births) | #34 (5,451 births) |
| Total US births since 1880 | 253 | 807,425 |
| Last 10 years (2016–2025) | 253 | 75,367 |
Peak comparison takeaway
At its all-time peak, Emily reached 26,542 US births in 1999 — 26,289 more than Isa's peak count.
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 boys-name list.
Isa — top 5 states
| # | State | Avg rank | Births |
|---|---|---|---|
| 1 | Virginia | #638 | 45 |
| 2 | Illinois | #666 | 118 |
| 3 | New Jersey | #712 | 66 |
| 4 | New York | #746 | 136 |
| 5 | Pennsylvania | #776 | 65 |
Emily — top 5 states
| # | State | Avg rank | Births |
|---|---|---|---|
| 1 | California | #10 | 12,185 |
| 2 | New Jersey | #13 | 2,319 |
| 3 | Florida | #13 | 4,899 |
| 4 | Texas | #14 | 8,237 |
| 5 | New York | #15 | 4,529 |
Want a different comparison?
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 →