The Washington dataset covers 17,856 registered babies across 100 distinct first names, drawn from U.S. Social Security Administration records going back to 1910.
The #1 boy name Oliver represents 4.5% of registered boys in the state. The #1 girl name Olivia represents 4.4% of girls. The higher those percentages, the more concentrated naming is — states with strong local traditions tend to cluster around familiar choices, while cosmopolitan states spread names over a wider pool.
Names distinctive to Washington
These names are significantly more popular in this state than nationally — they capture Washington's particular naming character:
Juniper
Washington #30 · US #111
Frequently asked questions
What is the most popular boy name in Washington?
Oliver is the most popular boy name in Washington across the available data, recorded 448 times — about 4.5% of boys' name registrations in the state.
What is the most popular girl name in Washington?
Olivia is the most popular girl name in Washington, recorded 354 times — about 4.4% of girls' name registrations in the state.
How far back does the Washington name data go?
The Washington dataset spans 115 years of baby name records — from 1910 through 2025 — sourced directly from the U.S. Social Security Administration.
How many unique names have been used in Washington?
The combined dataset for Washington contains 100 distinct first names (50 boys, 50 girls) spanning 17,856 total registered births.
What girl names are distinctive to Washington?
Juniper is distinctive to Washington — ranked #30 in the state versus #111 nationally. A regional-flavor pick.