Baltimore County, Maryland: Diversifying Metro county. In 2024, voted D+24%. Democratic peak: D+75 in 1912.
Key facts
- 2024 presidential margin
- D+24MIT Election Lab
- Political typology
- Diversifying MetroAkashic typology
- Population
- 850,7962024 5-year
- Median household income
- $91,7682024 5-year
- White (non-Hispanic)
- 52.6%2024 5-year
- Black
- 30.7%2024 5-year
- Hispanic / Latino
- 7.8%2024 5-year
- Peak Democratic margin
- D+75 in 1912MIT Election Lab
- Peak Republican margin
- R+42 in 1972MIT Election Lab
- Most similar
- Howard County, MD · similarity 0.98
2024 results by precinct
2024 precinct map of Baltimore CountyPrecinct-level 2024 presidential results for Baltimore County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | +16.0% |
| 1896 | −12.2% |
| 1900 | No data |
| 1904 | No data |
| 1908 | No data |
| 1912 | +75.0% |
| 1916 | +9.1% |
| 1920 | −13.8% |
| 1924 | +0.2% |
| 1928 | −20.8% |
| 1932 | +27.1% |
| 1936 | +19.9% |
| 1940 | +6.5% |
| 1944 | −12.9% |
| 1948 | −13.4% |
| 1952 | −25.5% |
| 1956 | −36.6% |
| 1960 | −0.9% |
| 1964 | +20.1% |
| 1968 | −12.8% |
| 1972 | −42.2% |
| 1976 | −9.5% |
| 1980 | −4.0% |
| 1984 | −23.2% |
| 1988 | −14.7% |
| 1992 | +5.2% |
| 1996 | +6.7% |
| 2000 | +9.1% |
| 2004 | +4.6% |
| 2008 | +14.6% |
| 2012 | +17.0% |
| 2016 | +17.9% |
| 2020 | +27.0% |
| 2024 | +24.3% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 249,958 | 149,560 | 412,915 | ||
| D | 258,409 | 146,202 | 414,932 | ||
| D | 218,412 | 149,477 | 384,981 | ||
| D | 220,322 | 154,908 | 384,782 | ||
| D | 214,151 | 158,714 | 380,938 | ||
| D | 182,474 | 166,051 | 353,479 | ||
| D | 160,635 | 133,033 | 304,084 | ||
| D | 132,599 | 114,449 | 269,968 | ||
| D | 143,498 | 126,728 | 323,220 | ||
| R | 121,570 | 163,881 | 287,295 | ||
| R | 106,908 | 171,929 | 280,428 | ||
| R | 121,280 | 132,490 | 279,917 | ||
| R | 118,505 | 143,293 | 261,798 | ||
| R | 70,309 | 175,897 | 250,224 | ||
| R | 80,798 | 108,930 | 219,011 | ||
| D | 117,153 | 77,870 | 195,073 | ||
| R | 94,396 | 96,027 | 190,423 | ||
| R | 48,270 | 104,021 | 152,291 | ||
| R | 48,476 | 81,898 | 130,858 | ||
| R | 31,883 | 41,846 | 74,490 | ||
| R | 26,275 | 34,047 | 60,322 | ||
| D | 30,360 | 26,652 | 57,198 | ||
| D | 28,367 | 18,893 | 47,576 | ||
| D | 24,626 | 13,938 | 39,494 | ||
| R | 15,632 | 23,889 | 39,701 | ||
| D | 9,424 | 9,383 | 21,661 | ||
| R | 9,365 | 12,432 | 22,183 | ||
| D | 15,226 | 12,633 | 28,406 | ||
| D | 20,982 | 4,247 | 22,312 | ||
| — | 17,246 | 10,297 | 488 | ||
| — | 18,987 | 7,570 | 282 | ||
| — | 9,147 | 9,348 | 142 | ||
| R | 7,110 | 9,211 | 17,188 | ||
| D | 7,225 | 5,165 | 12,880 | ||
| — | — | — | — | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
13.8%
Irish
10.5%
English
7.6%
Italian
5.3%
American
4.2%
Polish
3.8%
French
1.1%
African American
24.6%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
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.
2024 ACS
Age distribution by sex
Median age: 39.7 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.
2024 ACS
Median household income
Inflation-adjusted dollars
$91,768
Baltimore County ranks in the top 10% of US counties.
Baltimore County$91,768
Maryland$103,678
United States$80,734
Baltimore County ranks in the top 10% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
9.8%
Child poverty is below the national average.
Children under 1812.2%
Working age (18–64)8.7%
Seniors (65+)12.9%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
84.2%
speak English only
Spanish5.0%
Other Indo-European4.7%
Other languages3.1%
Asian & Pacific Islander3.0%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 65.3% of residents not counted as adherents by any reporting body.
Baltimore County surrounds — but excludes — Baltimore City, and its dense inner suburbs have driven consistent Democratic performance, with the 2024 presidential margin landing 24 points left of center despite a historically competitive past.
The Democratic margin here reached seventy-five points in 1912. Between 2020 and 2024 the county moved three points toward the Republican candidate; the 2024 margin was twenty-four points.
A population of 850,796, a 53% non-Hispanic-white share, and a median household income of $91,768 describe the county. The county's voting pattern over the last decade is most similar to that of Howard County and Buncombe County.
Most similar counties
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.
Baltimore County, Maryland. Akashic. https://akashic.app/county/24005/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More in Maryland
More diversifying metro counties
Frequently asked questions
How did Baltimore County, Maryland vote in 2024?
In 2024, Baltimore County, Maryland voted Democratic by 24.3 points (D+24), carried by the Democratic candidate. Out of 412,915 votes cast, 249,958 went Democratic and 149,560 went Republican.
What is Baltimore County, Maryland's political typology?
Akashic places Baltimore County, Maryland in the "Diversifying Metro" typology — Mid-size metropolitan counties growing more diverse and trending Democratic. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 17 times, Republican 14 times, and other 0 times.
When did Baltimore County, Maryland last vote Republican?
The most recent presidential election in which Baltimore County, Maryland voted Republican was 1988.
How many people live in Baltimore County, Maryland?
Baltimore County, Maryland has a population of 850,796 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Baltimore County, Maryland?
Median household income in Baltimore County, Maryland is $91,768 — above the national median of $80,734. The Maryland state median is $103,678.
What is the political history of Baltimore County, Maryland?
Akashic tracks 38 presidential elections in Baltimore County, Maryland from 1876 to 2024. Of those, 17 went Democratic and 14 went Republican. The county's typology — "Diversifying Metro" — captures where that record, its demographics, and its recent swing place it among American communities.