🏛️ U.S. Census Surname Profile

How Many People Have the Last Name Thomas?

Official Demographic Finding

~756,142 People

In official U.S. Decennial Census returns, Thomas ranks as the #16 most common surname nationwide, representing approximately 256.34 people per 100,000 Americans.

Surname Snapshot

National Rank

#16

Total Bearers

~756,142

Frequency / 100k

256.34

Etymology / Origin

Welsh / English (Patronymic: From the Aramaic 'Twin')

Popular Full Name Combinations with "Thomas"

Explore estimated population counts for verified full names ending with Thomas:

James Thomas~5,640 people →John Thomas~1,530 people →Robert Thomas~5,220 people →Michael Thomas~6,470 people →

Explore Other Common Surnames

Smith (Rank #1)Johnson (Rank #2)Williams (Rank #3)Brown (Rank #4)Jones (Rank #5)Garcia (Rank #6)

U.S. Census Surname Data Provenance

Frequently Occurring Surnames in the United StatesOfficial Link ↗

U.S. Census Bureau Population Division · Decennial Census returns with 100+ occurrences

Data Pipeline Version: 2026.08.14Methodology Version: 1.0.0Read full methodology →

✨ Free Demographic Tool

Check Any Given Name or Full Name with Thomas

Instant calculations powered by official U.S. demographic registries.

⚡ Instant calculation🛡️ No signup required📊 Official SSA 1880–2024 data