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Compare two names

Sidni and Sydney side by side: Sidni peaked in 1995 and Sydney in 2000; in 2025 they were given to 0 and 893 babies.

Sidni and Sydney, year by year

Babies given each name per year
Sidni and Sydney births by year2.5k5k7.5k10k13k18801900192019401960198020002025SydneySidni
Sidni and Sydney births by year2.5k5k7.5k10k13k18801900192019401960198020002025SydneySidni
Sidni and Sydney births by year2.5k5k7.5k10k13k1880190519301955198020052025SydneySidni
Sidni and Sydney births by year2.5k5k7.5k10k13k1880193019802025SydneySidni

Girls and boys together; Sidni solid, Sydney dashed.

Sidni and Sydney compared
SidniSydney
Births 20250893
Rank 2025not ranked#348 among girls’ names
Recorded since 1880236187,700
Peak year19952000
Girls100%95%
Alive, estimated231178,000
Median age2724

Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.

Open the full record for Sydney