State Legislative Subdistrict 30B, Maryland: Bellwether district. In 2024, voted D+14%. Democratic peak: D+64 in 1912.
Key facts
- 2024 presidential margin
- D+14MIT Election Lab
- Political archetype
- BellwetherAkashic typology
- Population
- 150,5452024 5-year
- Median household income
- $124,9112024 5-year
- White (non-Hispanic)
- 63.4%2024 5-year
- Black
- 17.9%2024 5-year
- Hispanic / Latino
- 10.5%2024 5-year
- Peak Democratic margin
- D+64 in 1912MIT Election Lab
- Peak Republican margin
- R+46 in 1972MIT Election Lab
Constituent county margins for State Legislative Subdistrict 30B, MDOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 43,275 | 32,439 | 78,416 | ||
| D | 43,496 | 32,170 | 77,924 | ||
| D | 32,320 | 30,806 | 66,585 | ||
| R | 31,871 | 31,921 | 65,475 | ||
| R | 31,463 | 32,638 | 65,340 | ||
| R | 26,004 | 33,531 | 60,319 | ||
| R | 22,556 | 26,227 | 50,501 | ||
| R | 18,158 | 21,034 | 43,209 | ||
| R | 17,272 | 20,503 | 46,720 | ||
| R | 13,953 | 24,800 | 39,035 | ||
| R | 11,971 | 23,701 | 35,887 | ||
| R | 12,780 | 17,477 | 33,129 | ||
| R | 13,679 | 15,441 | 29,120 | ||
| R | 6,564 | 18,047 | 24,976 | ||
| R | 6,388 | 9,201 | 19,536 | ||
| D | 9,559 | 6,726 | 16,285 | ||
| R | 6,559 | 7,700 | 14,260 | ||
| R | 3,999 | 7,204 | 11,202 | ||
| R | 3,709 | 5,857 | 9,639 | ||
| R | 2,193 | 2,762 | 5,103 | ||
| R | 2,584 | 2,733 | 5,318 | ||
| D | 3,301 | 2,316 | 5,639 | ||
| D | 2,872 | 2,134 | 5,042 | ||
| D | 2,457 | 1,454 | 4,010 | ||
| R | 1,575 | 2,553 | 4,149 | ||
| D | 948 | 924 | 2,078 | ||
| R | 1,272 | 1,560 | 2,862 | ||
| D | 1,035 | 681 | 1,791 | ||
| D | 1,620 | 559 | 1,665 | ||
| — | 1,505 | 865 | 19 | ||
| — | 1,874 | 717 | 33 | ||
| — | 830 | 1,018 | 0 | ||
| R | 792 | 1,014 | 1,848 | ||
| D | 855 | 705 | 1,590 | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
14.6%
Irish
13.1%
English
11.9%
Italian
6.0%
American
4.0%
Polish
3.3%
Scottish
2.0%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 39.0 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$124,911
State Legislative Subdistrict 30B ranks near the middle of US counties.
State Legislative Subdistrict 30B$124,911
Maryland$103,678
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
5.6%
Child poverty is below the national average.
Children under 185.8%
Working age (18–64)5.5%
Seniors (65+)7.2%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
86.1%
speak English only
Spanish6.9%
Other Indo-European2.9%
Asian & Pacific Islander2.6%
Other languages1.4%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 66.0% of residents not counted as adherents by any reporting body.
State Legislative Subdistrict 30B in the Mid-Atlantic has, for decades, voted very close to the way the country has voted. Its margins are typically narrow, and the candidate who carries State Legislative Subdistrict 30B more often than not also wins the national popular vote.
The Democratic margin in State Legislative Subdistrict 30B has rarely exceeded sixty-four points in modern history; the Republican margin has rarely exceeded forty-six points. 2024 delivered the district to the Democratic candidate by fourteen points.
Its demographics resemble the country more than they resemble most districts. A 63% non-Hispanic-white share, a 6% poverty rate, and a median household income of $124,911 — all within the broad national range.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
State Legislative Subdistrict 30B, Maryland. Akashic. https://akashic.app/sld-lower/2430B/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State Legislative Subdistrict 30B, Maryland vote in 2024?
In 2024, State Legislative Subdistrict 30B, Maryland voted Democratic by 13.8 points (D+14), carried by the Democratic candidate. Out of 78,416 votes cast, 43,275 went Democratic and 32,439 went Republican.
What is State Legislative Subdistrict 30B, Maryland's political archetype?
Akashic classifies State Legislative Subdistrict 30B, Maryland as a "Bellwether" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 11 times, Republican 20 times, and other 0 times.
When did State Legislative Subdistrict 30B, Maryland last vote Republican?
The most recent presidential election in which State Legislative Subdistrict 30B, Maryland voted Republican was 2012.
How many people live in State Legislative Subdistrict 30B, Maryland?
State Legislative Subdistrict 30B, Maryland has a population of 150,545 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State Legislative Subdistrict 30B, Maryland?
Median household income in State Legislative Subdistrict 30B, Maryland is $124,911 — above the national median of $80,734. The Maryland state median is $103,678.
What is the political history of State Legislative Subdistrict 30B, Maryland?
Akashic tracks 38 presidential elections in State Legislative Subdistrict 30B, Maryland from 1876 to 2024. Of those, 11 went Democratic and 20 went Republican. The district's archetype — "Bellwether" — captures the overall trajectory of that voting record.