State name profile
Most Popular Baby Names in Montana
The boys' and girls' names most often given in Montana, ranked by total recorded births in Social Security Administration state data, 1910–2025.
- Robert
- #1 boy name
- Mary
- #1 girl name
- 430,897
- Births recorded
- 1910–2025
- Years covered
Montana's all-time #1 names are Robert for boys and Mary for girls, based on 430,897 SSA birth registrations since 1910.
According to the U.S. Social Security Administration, Montana has recorded 430,897 births across its top 50 boy and top 50 girl names since 1910. Robert leads all boys with 18,782 births, while Mary tops the girls with 12,974. This profile covers decade-by-decade leaders and the full top-50 rankings for both sexes.
- Robert #1 boy name
- Mary #1 girl name
- 430,897 births recorded
Where Montana sits by recorded name volume
Montana: 1,019,300 SSA name registrations (QUIET · rank 47/51). Inventory signal only, orthogonal to the top-50 lists below.
Montana vs all states by SSA name registrations
Where this state's disclosed SSA name-state registration total sits among every tracked jurisdiction
1,019,300 47th of 51 higher than 4 of 51 states
Jurisdictions, banded by SSA name-registration count
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source Social Security Administration state baby-name files · 2026-08-11
Montana naming snapshot
According to SSA state files through 2025, Mary is #1 of 12,974 cumulative SSA births in Montana ≠ Charlotte #1 of 259 2025 girl names at all-time rank #51; Robert is #1 of 18,782 cumulative SSA births in Montana ≠ Oliver #1 of 293 2025 boy names at all-time rank #51.
- Charlotte
- 2025 girls #1, all-time #51
- Mary
- all-time girls #1, 2025 #51
- Oliver
- 2025 boys #1, all-time #51
- Robert
- all-time boys #1, 2025 #51
Both sexes in Montana already split latest-year vs all-time leaders, cumulative totals since 1910 and 2025 use different denominators.
Data updated Aug 2026
Both sexes trend-led
What a thin registry book shows for Montana
Montana sits in the lightest third of SSA name-state registration totals (1,019,300 · QUIET · #47/51). Cumulative top-50 leaders are Robert (18,782 boy births) and Mary (12,974 girl births) across 430,897 top-50 registrations since 1910. Both sexes are TREND-LED: the latest 2025 #1 differs from the all-time cumulative #1 on each side. Boy top-50 share 272,468 vs 158,429 for girls.
In Montana, the latest SSA year #1 differs from the all-time cumulative #1 for both boys and girls, a dual trend split against the long book.
Coverage notes on a thin state file
Decade-by-decade data for Montana extends back to 1910. In the 1910s, the #1 boy name was John and the #1 girl name was Mary. By the 2020s, the top names had shifted to Oliver for boys and Charlotte for girls.
SSA state files include any name appearing five or more times in a given state-year; lower-frequency names are suppressed for privacy. Figures are comparable across all 50 states and DC. Alternate spellings (Sophia vs Sofia) are separate names; middle names are not tracked. This page is for informational and research purposes.
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Top 10 girls' names in Montana, 2025
Single-year SSA state registrations (259 names reported)
- Charlotte
Charlotte
46 births
- Lucy
Lucy
41 births
- Amelia
Amelia
40 births
- Lainey
Lainey
38 births
- Nora
Nora
37 births
- Harper
Harper
36 births
- Violet
Violet
36 births
- Sophia
Sophia
34 births
- Isla
Isla
32 births
- Evelyn
Evelyn
32 births
What this shows Charlotte leads 2025 girls in Montana; Mary remains the all-time cumulative #1 at rank #51 in 2025.
Top 10 boys' names in Montana, 2025
Single-year SSA state registrations (293 names reported)
- Oliver
Oliver
62 births
- Henry
Henry
58 births
- William
William
52 births
- Hudson
Hudson
45 births
- Theodore
Theodore
45 births
- James
James
44 births
- Waylon
Waylon
43 births
- Weston
Weston
43 births
- Cooper
Cooper
41 births
- Colter
Colter
39 births
What this shows Oliver leads 2025 boys in Montana; Robert remains the all-time cumulative #1 at rank #51 in 2025.
Top 10 girls' names in Montana
Cumulative births recorded in state SSA files (1910–2025)
- Mary
Mary
12,974 births
- Patricia
Patricia
5,407 births
- Linda
Linda
5,320 births
- Margaret 5,183
Margaret
5,183 births
- Barbara 4,912
Barbara
4,912 births
- Helen 4,760
Helen
4,760 births
- Dorothy 4,546
Dorothy
4,546 births
- Betty 4,538
Betty
4,538 births
- Elizabeth 4,432
Elizabeth
4,432 births
- Jennifer 4,325
Jennifer
4,325 births
What this shows Mary leads Montana girls with 12,974 recorded births.
Top 10 boys' names in Montana
Cumulative births recorded in state SSA files (1910–2025)
- Robert
Robert
18,782 births
- John
John
18,085 births
- James
James
17,083 births
- William
William
14,645 births
- Michael
Michael
13,264 births
- David
David
11,652 births
- Richard
Richard
9,739 births
- Thomas
Thomas
8,184 births
- Donald 7,484
Donald
7,484 births
- Charles 7,368
Charles
7,368 births
What this shows Robert leads Montana boys with 18,782 recorded births.
Decade-by-Decade Leaders
The #1 boy and girl name in Montana for each decade
How we calculated this
For each decade, we sum every year's SSA state-level birth count per name, then take the single name with the highest ten-year total for each sex. A name can lead a decade with a strong single peak year or with steady, moderate demand across all ten years, the total treats both the same way.
| Decade | Top Boy | Births | Top Girl | Births |
|---|---|---|---|---|
| 1910s | John | 2,163 | Mary | 2,007 |
| 1920s | Robert | 3,064 | Mary | 2,476 |
| 1930s | Robert | 2,614 | Mary | 1,874 |
| 1940s | Robert | 3,050 | Linda | 2,230 |
| 1950s | Robert | 3,187 | Mary | 2,369 |
| 1960s | Michael | 2,576 | Lisa | 1,496 |
| 1970s | Michael | 2,166 | Jennifer | 2,112 |
| 1980s | Michael | 1,849 | Jessica | 1,519 |
| 1990s | Jacob | 1,077 | Jessica | 790 |
| 2000s | Jacob | 710 | Madison | 733 |
| 2010s | Liam | 563 | Emma | 610 |
| 2020s | Oliver | 350 | Charlotte | 274 |
Boy Top 50 Boy Names
| # | Name | Total Births |
|---|---|---|
| 1 | Robert | 18,782 |
| 2 | John | 18,085 |
| 3 | James | 17,083 |
| 4 | William | 14,645 |
| 5 | Michael | 13,264 |
| 6 | David | 11,652 |
| 7 | Richard | 9,739 |
| 8 | Thomas | 8,184 |
| 9 | Donald | 7,484 |
| 10 | Charles | 7,368 |
| 11 | Daniel | 7,007 |
| 12 | Joseph | 6,829 |
| 13 | Kenneth | 5,457 |
| 14 | George | 5,218 |
| 15 | Mark | 5,001 |
| 16 | Gary | 4,738 |
| 17 | Christopher | 4,568 |
| 18 | Matthew | 4,541 |
| 19 | Steven | 4,384 |
| 20 | Ronald | 4,378 |
| 21 | Paul | 4,302 |
| 22 | Jack | 4,068 |
| 23 | Joshua | 4,004 |
| 24 | Timothy | 3,919 |
| 25 | Edward | 3,821 |
| 26 | Brian | 3,777 |
| 27 | Scott | 3,730 |
| 28 | Jason | 3,593 |
| 29 | Andrew | 3,566 |
| 30 | Ryan | 3,547 |
| 31 | Larry | 3,485 |
| 32 | Kevin | 3,414 |
| 33 | Jacob | 3,374 |
| 34 | Patrick | 3,302 |
| 35 | Douglas | 3,234 |
| 36 | Raymond | 3,150 |
| 37 | Justin | 3,029 |
| 38 | Frank | 2,916 |
| 39 | Tyler | 2,886 |
| 40 | Jeffrey | 2,860 |
| 41 | Dennis | 2,818 |
| 42 | Benjamin | 2,719 |
| 43 | Harold | 2,453 |
| 44 | Samuel | 2,440 |
| 45 | Jerry | 2,355 |
| 46 | Anthony | 2,298 |
| 47 | Eric | 2,281 |
| 48 | Henry | 2,275 |
| 49 | Gregory | 2,224 |
| 50 | Brandon | 2,221 |
Girl Top 50 Girl Names
| # | Name | Total Births |
|---|---|---|
| 1 | Mary | 12,974 |
| 2 | Patricia | 5,407 |
| 3 | Linda | 5,320 |
| 4 | Margaret | 5,183 |
| 5 | Barbara | 4,912 |
| 6 | Helen | 4,760 |
| 7 | Dorothy | 4,546 |
| 8 | Betty | 4,538 |
| 9 | Elizabeth | 4,432 |
| 10 | Jennifer | 4,325 |
| 11 | Carol | 3,909 |
| 12 | Susan | 3,870 |
| 13 | Karen | 3,746 |
| 14 | Donna | 3,667 |
| 15 | Ruth | 3,244 |
| 16 | Jessica | 3,168 |
| 17 | Sarah | 3,165 |
| 18 | Sharon | 3,161 |
| 19 | Shirley | 3,147 |
| 20 | Sandra | 2,976 |
| 21 | Nancy | 2,893 |
| 22 | Lisa | 2,888 |
| 23 | Kathleen | 2,856 |
| 24 | Michelle | 2,599 |
| 25 | Amanda | 2,551 |
| 26 | Alice | 2,551 |
| 27 | Laura | 2,530 |
| 28 | Anna | 2,514 |
| 29 | Julie | 2,467 |
| 30 | Rebecca | 2,413 |
| 31 | Virginia | 2,329 |
| 32 | Evelyn | 2,312 |
| 33 | Debra | 2,243 |
| 34 | Jean | 2,191 |
| 35 | Katherine | 2,190 |
| 36 | Kimberly | 2,187 |
| 37 | Emily | 2,184 |
| 38 | Heather | 2,158 |
| 39 | Janet | 2,088 |
| 40 | Amy | 2,087 |
| 41 | Emma | 2,071 |
| 42 | Frances | 2,066 |
| 43 | Melissa | 2,037 |
| 44 | Ashley | 2,032 |
| 45 | Bonnie | 1,997 |
| 46 | Lois | 1,959 |
| 47 | Judy | 1,945 |
| 48 | Kathryn | 1,892 |
| 49 | Deborah | 1,876 |
| 50 | Pamela | 1,873 |
Read with Montana
Nearest ABS peers for a thin-registry state (Montana · QUIET · TREND-LED).
QUIET TREND-LED
Hawaii · QUIET
1,028,181 SSA registrations (near-scale with Montana; ABS Δ 8,881). Leader lane may differ from Montana's TREND-LED.
New Hampshire · QUIET
1,052,148 SSA registrations (near-scale with Montana; ABS Δ 32,848). Leader lane may differ from Montana's TREND-LED.
Nevada · QUIET
1,113,187 SSA registrations (near-scale with Montana; ABS Δ 93,887). Leader lane may differ from Montana's TREND-LED.
South Dakota · QUIET
1,130,783 SSA registrations (near-scale with Montana; ABS Δ 111,483). Leader lane may differ from Montana's TREND-LED.
New Mexico (volume-lane contrast)
Near Montana on SSA registration volume yet stamps SPARSE vs QUIET.
Why names rise and fall
Montana stamps QUIET · TREND-LED - read the matching SSA methodology before quoting state leaders.
Source: U.S. Social Security Administration, Baby Names, State-Level Files, 1910–2025 (ssa.gov).
Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data (ssa.gov/oact/babynames).
Read our methodology - thin-registry states: how small SSA state files are compared without inventing suppressed names.
According to the Social Security Administration, as of June 2026 this profile draws directly on the agency's state-level public-use files, which document 6,696,687 state-level records across all 51 reporting jurisdictions spanning 1910-2025.
