# Sidney name report

Canonical URL: https://babynameranks.com/name/f/sidney
Data source: U.S. Social Security Administration public baby-name records
Latest year: 2025

## Summary
Sidney ranked #1878 officially for girls in 2025. After combined spelling groups, it ranked #1839.

## Official spelling
- Rank: #1878
- Birth count: 105
- Rate per 10,000: 0.65

## Combined spelling group
- Group display: Sidney
- Rank: #1839
- Birth count: 105
- Rate per 10,000: 0.65
- Official count multiplier: 1.00x

## Practical popularity
- Expected per class of 25: 0.00
- Expected per grade of 100: 0.00
- Expected per school of 300: 0.01
- Duplicate chance in grade of 100: 0.3%

## Trend
- Label: past peak
- Peak rate year: 1999
- Best rank year: 1999
- Latest rate as percent of peak: 9.5%

## Spelling components
- Sidney: 105 births

## Methodology notes
- Official SSA ranks treat each spelling separately.
- Combined ranks group spelling variants and recompute ranks by sex.
- State combined counts may be lower bounds when rare state spellings are suppressed.
- Full methodology: https://babynameranks.com/methodology