Girls' name · since 1918
Mercia
Since 1918, U.S. Social Security records show 114 babies named Mercia, peaking in 1919. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- 114
- total births
- 1918–2016
- years on record
- 1920s
- peak decade
- 18%
- born in that decade
114 girls have been named Mercia since 1918, though it isn't currently a top-ranked name.
According to the U.S. Social Security Administration, Mercia has been recorded 114 times among girls since 1918, though it is not among the currently most-used girls names, with its heaviest use in the 1920s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1918 to 2016.
- 114 total births
- 1918–2016 years on record
- 1920s peak decade
- 18% born in that decade
Data updated Jul 2026
Mercia's 114 recorded births place it above 64% of the 72,339 girls names in the full SSA archive.
No state rows cleared SSA’s public reporting threshold for this name.
Mercia's usage pattern, beyond the headline number
Mercia splits its recorded history at 1944: 47% of all births land in the more recent half, 53% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1944 (5 births) -- compare that against the 1919 peak of 9 for a sense of just how much the name's popularity has swung.
Mercia popularity over time
Annual U.S. births registered with the Social Security Administration · 1918–2016
- Peak year (1919)
- 9
- Annual births at peak, across 99 years of records
Mercia by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Mercia's strongest decade.
20 babies received the name during that ten-year window, about 18% of all-time use.
Mercia births by decade
Total births in each ten-year window
- 1910s
1910s
15 births
- 1920s
1920s
20 births
- 1930s
1930s
18 births
- 1940s
1940s
18 births
- 1950s
1950s
17 births
- 1960s 5
1960s
5 births
- 1970s 5
1970s
5 births
- 2000s
2000s
11 births
- 2010s 5
2010s
5 births
What this shows Peak: 1920s at 20 births (18% of all-time use).
Frequently Asked Questions
How popular is the name Mercia? ▼
When was Mercia most popular? ▼
How long has the name Mercia been used? ▼
What names are similar to Mercia? ▼
What to do with Mercia's data
- Mercia's decade-level peak was the 1920s (20 total births); usage has since declined to 5 in the 2010s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Mercia
Nearby Names Like Mercia
Names with a similar sound, spelling, or feel to Mercia
Compare Mercia side by side: Mercia vs Meredith Mercia vs Mercedes Mercia vs Merle
Related Names
Names with a similar number of total births
Data Sources
Data as of July 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1918–2016 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac. "Mercia: Baby Name Since 1918 - 114 Births, Peak 1919." NameAlmanac. Accessed via https://namealmanac.com/name/mercia. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Mercia draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of July 2026.