Sydney: Meaning of Baby Name Sydney

About the Name Sydney

Sydney is an English place-name and surname descending from the Norman French Saint-Denis — a French village name based on the patron saint Denis, the 3rd-century bishop of Paris and martyr. The medieval English contraction "Sidney" emerged from this French root, and the name has been used as a personal name and surname continuously since at least the 13th century.

The name's overwhelming geographic anchor is Sydney, Australia — Australia's largest city, named after Lord Sydney (Thomas Townshend, 1st Viscount Sydney) at the time of the city's 1788 founding as the British penal colony. The Sydney Opera House (opened 1973) and Sydney Harbour Bridge (1932) make the city's name iconic globally.

Notable bearers include British poet and statesman Sir Philip Sidney (1554–1586, Elizabethan-era poet and figure of chivalric ideals); American writer Sidney Sheldon (1917–2007, prolific bestselling novelist); American actor Sidney Poitier (1927–2022, the first African-American Oscar winner for Best Actor, Lilies of the Field, 1963); and the fictional American teen Sydney Bristow of Alias (2001–2006). The American Sydney has shifted from predominantly male in the 19th and early 20th centuries to predominantly female in modern American naming. Sydney's American climb peaked in the late 1990s and 2000s, reaching the US top 25 girls' rank from 1999 through 2009. The name has receded slightly since but remains in steady use. The name's appeal sits in the distinctive Australian-cultural register, three soft syllables, and tonal versatility across casual and formal registers. Common nicknames Syd, Sid, Sydie, and the rare Sydan each carry distinct registers; the alternate spelling Sidney has its own SSA tracking. International forms include the older Sidney (English) and the rare French Sydney.

Source: U.S. Social Security Administration name data, 1880–2024 (methodology). By Marvin Tang.

Quick Facts About Sydney

1,414

French baby names in our dictionary

843

French female names

322

6-letter S-names in our dictionary

481

S-female names total

1994–2025

years of US SSA records (32 total)

156,731

total US births named Sydney (all years)

US Popularity History (1994–2025)

📉 Falling fast: Sydney dropped 107 places in the US girls ranking over the last 5 years (#241 in 2020 → #348 in 2025).

Annual US births named Sydney by gender, from US Social Security Administration records. Peak year: 2000 with 10,243 girls named Sydney (girl rank #23 that year).

Where it stands today: in 2025, ranked #348 for girls (873 US births). That's 325 places below its 2000 peak.

Source: US Social Security Administration. Limitations: US birth-certificate data only; names appearing fewer than 5 times in a given year are suppressed for privacy; spelling variants are counted separately. For names that ranked outside the US top 100 before year 2000, only the years they reached the top 100 are shown — the chart may have gaps for less-popular historical names.

Where in the US Is Sydney Most Popular?

Average girl-name rank within each state across 2016–2025 SSA records. A lower number means the name appears closer to the top of that state's girls-name rankings — a per-capita measure that isn't biased toward large states. For Sydney the strongest states are District of Columbia, Delaware, Minnesota.

Strongest girls-name states

#	State	Avg rank	Births
1	District of Columbia	#113	92
2	Delaware	#146	41
3	Minnesota	#154	361
4	Connecticut	#155	201
5	Massachusetts	#162	348
6	Maine	#168	31
7	Hawaii	#171	20
8	Pennsylvania	#175	632
9	New Hampshire	#179	60
10	Rhode Island	#180	51

Weakest girls-name states

#	State	Avg rank	Births
1	Arizona	#402	195
2	Louisiana	#400	167
3	Mississippi	#379	80
4	Oklahoma	#360	125
5	Nevada	#360	63
6	New Mexico	#354	24
7	Nebraska	#347	65
8	Texas	#342	970
9	Arkansas	#320	83
10	Kentucky	#309	158

Source: SSA state-level baby-name dataset 2016–2025. States with fewer than 3 years of data for Sydney in this window are excluded. Births < 5 in a given state-year are suppressed by SSA for privacy.

Variant Forms

Name	Meaning	Gender	Origin
Sidney	From St. Denys	Male	French
Sydnee	From St. Denis.	Female	French

Looking for names like Sydney?

A dedicated page with 60+ related names — spelling variants, rhymes, alliterations, same-origin matches, and shared meaning concepts — lives at its own URL so each kind of similarity gets a deeper treatment than fits here.

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Compare Sydney to Other Popular Names

Side-by-side popularity charts and crossover years for Sydney against today's most popular girls-name peers (top 8 by US births in the last 10 years of SSA records).

Sydney vs Olivia 210,124 births since 2014

Sydney vs Emma 202,477 births since 2014

Sydney vs Sophia 169,709 births since 2014

Sydney vs Isabella 158,431 births since 2014

Sydney vs Ava 157,356 births since 2014

Sydney vs Charlotte 151,872 births since 2014

Sydney vs Mia 149,779 births since 2014

Sydney vs Amelia 142,728 births since 2014

Compare to a different name →