Montgomery County, Pennsylvania: Diversifying Metro county. In 2024, voted D+23%. Republican peak: R+57 in 1924.
Key facts
- 2024 presidential margin
- D+23MIT Election Lab
- Political typology
- Diversifying MetroAkashic typology
- Population
- 867,5732024 5-year
- Median household income
- $113,9152024 5-year
- White (non-Hispanic)
- 73.1%2024 5-year
- Black
- 9.3%2024 5-year
- Hispanic / Latino
- 6.7%2024 5-year
- Peak Democratic margin
- D+26 in 2020MIT Election Lab
- Peak Republican margin
- R+57 in 1924MIT Election Lab
- Most similar
- Delaware County, PA · similarity 0.99
2024 results by precinct
2024 precinct map of Montgomery CountyPrecinct-level 2024 presidential results for Montgomery 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 | +0.1% |
| 1896 | −26.0% |
| 1900 | −20.3% |
| 1904 | −28.0% |
| 1908 | −22.5% |
| 1912 | +8.7% |
| 1916 | −19.3% |
| 1920 | −43.0% |
| 1924 | −57.0% |
| 1928 | −53.4% |
| 1932 | −31.3% |
| 1936 | −6.8% |
| 1940 | −19.4% |
| 1944 | −24.0% |
| 1948 | −34.6% |
| 1952 | −33.5% |
| 1956 | −38.5% |
| 1960 | −21.5% |
| 1964 | +13.8% |
| 1968 | −15.0% |
| 1972 | −30.3% |
| 1976 | −15.7% |
| 1980 | −26.8% |
| 1984 | −28.9% |
| 1988 | −21.4% |
| 1992 | +3.4% |
| 1996 | +7.7% |
| 2000 | +9.7% |
| 2004 | +11.6% |
| 2008 | +20.8% |
| 2012 | +14.3% |
| 2016 | +21.3% |
| 2020 | +26.3% |
| 2024 | +22.7% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 317,103 | 198,311 | 523,138 | ||
| D | 319,511 | 185,460 | 510,157 | ||
| D | 256,082 | 162,731 | 438,652 | ||
| D | 233,356 | 174,381 | 412,869 | ||
| D | 253,393 | 165,552 | 422,419 | ||
| D | 222,048 | 175,741 | 399,591 | ||
| D | 177,990 | 145,623 | 332,422 | ||
| D | 143,664 | 121,047 | 293,961 | ||
| D | 136,572 | 125,704 | 318,576 | ||
| R | 109,834 | 170,294 | 282,870 | ||
| R | 99,741 | 181,426 | 282,666 | ||
| R | 84,289 | 156,996 | 271,553 | ||
| R | 112,644 | 155,480 | 273,169 | ||
| R | 91,959 | 173,662 | 270,018 | ||
| R | 102,464 | 141,621 | 260,732 | ||
| D | 135,657 | 102,714 | 239,075 | ||
| R | 92,212 | 142,796 | 235,326 | ||
| R | 59,095 | 133,270 | 192,583 | ||
| R | 57,701 | 115,899 | 173,973 | ||
| R | 41,112 | 85,576 | 128,626 | ||
| R | 47,815 | 78,260 | 126,827 | ||
| R | 49,409 | 73,250 | 123,091 | ||
| R | 57,870 | 66,442 | 126,506 | ||
| R | 32,971 | 64,619 | 100,961 | ||
| R | 23,026 | 76,680 | 100,408 | ||
| R | 11,094 | 45,407 | 60,154 | ||
| R | 12,239 | 31,963 | 45,855 | ||
| R | 13,658 | 20,431 | 35,072 | ||
| O | 11,894 | 8,978 | 33,632 | ||
| R | 11,899 | 19,088 | 31,909 | ||
| R | 10,420 | 18,833 | 30,096 | ||
| R | 11,208 | 17,051 | 28,849 | ||
| R | 9,985 | 17,329 | 28,294 | ||
| D | 13,611 | 13,591 | 27,682 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
Irish
18.9%
German
18.7%
Italian
13.4%
English
9.1%
Polish
5.5%
American
3.9%
Scottish
1.6%
African American
7.4%
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: 41.2 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
$113,915
Montgomery County ranks in the top 0.5% of US counties.
Montgomery County$113,915
Pennsylvania$77,971
United States$80,734
Montgomery County ranks in the top 0.5% 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
6.5%
Child poverty is below the national average.
Children under 187.8%
Working age (18–64)5.8%
Seniors (65+)9.8%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
85.3%
speak English only
Other Indo-European4.9%
Asian & Pacific Islander4.5%
Spanish4.1%
Other languages1.2%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 45.7% of residents not counted as adherents by any reporting body.
Once a reliably Republican collar county, Montgomery has shifted so decisively that its 2024 presidential margin of D+22.8 now ranks among the widest in Pennsylvania, driven by high educational attainment and rapid demographic change in townships like Lower Merion.
The Democratic margin here reached twenty-six points in 2020. Between 2020 and 2024 the county moved four points toward the Republican candidate; the 2024 margin was twenty-three points.
A population of 867,573, a 73% non-Hispanic-white share, and a median household income of $113,915 describe the county. The county's voting pattern over the last decade is most similar to that of Delaware County and Greater Bridgeport Planning Region.
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.
Montgomery County, Pennsylvania. Akashic. https://akashic.app/county/42091/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More in Pennsylvania
More diversifying metro counties
Frequently asked questions
How did Montgomery County, Pennsylvania vote in 2024?
In 2024, Montgomery County, Pennsylvania voted Democratic by 22.7 points (D+23), carried by the Democratic candidate. Out of 523,138 votes cast, 317,103 went Democratic and 198,311 went Republican.
What is Montgomery County, Pennsylvania's political typology?
Akashic places Montgomery County, Pennsylvania 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 11 times, Republican 22 times, and other 1 times.
When did Montgomery County, Pennsylvania last vote Republican?
The most recent presidential election in which Montgomery County, Pennsylvania voted Republican was 1988.
How many people live in Montgomery County, Pennsylvania?
Montgomery County, Pennsylvania has a population of 867,573 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Montgomery County, Pennsylvania?
Median household income in Montgomery County, Pennsylvania is $113,915 — above the national median of $80,734. The Pennsylvania state median is $77,971.
What is the political history of Montgomery County, Pennsylvania?
Akashic tracks 38 presidential elections in Montgomery County, Pennsylvania from 1876 to 2024. Of those, 11 went Democratic and 22 went Republican. The county's typology — "Diversifying Metro" — captures where that record, its demographics, and its recent swing place it among American communities.