Delaware County, Pennsylvania

2024 results by precinct

428 precincts · 329,215 votes cast

Harris · D+24

Harris +50

Trump +50

Real precinct boundaries. Hover for vote totals.

38 presidential elections

Year	Won	Margin	Democratic	Republican	Total
2024	D	+23.7%	201,324	123,421	329,215
2020	D	+26.8%	206,423	118,532	327,931
2016	D	+22.3%	177,402	110,667	299,336
2012	D	+21.3%	171,792	110,853	285,564
2008	D	+21.4%	178,870	115,273	297,004
2004	D	+14.8%	162,601	120,425	284,538
2000	D	+11.7%	134,861	105,836	248,077
1996	D	+9.9%	115,946	92,628	234,748
1992	D	+1.0%	111,210	108,587	266,074
1988	R	−20.9%	96,144	147,656	246,305
1984	R	−24.3%	98,207	161,754	261,782
1980	R	−21.4%	88,314	143,282	256,859
1976	R	−11.6%	117,252	148,679	270,894
1972	R	−29.6%	94,144	175,414	274,451
1968	R	−10.2%	106,695	133,777	266,436
1964	D	+13.9%	147,189	111,189	259,095
1960	R	−4.2%	124,629	135,672	260,783
1956	R	−27.2%	82,024	143,663	226,210
1952	R	−23.5%	80,316	129,743	210,748
1948	R	−23.6%	57,156	93,412	153,315
1944	R	−10.1%	64,021	78,533	143,309
1940	R	−14.1%	60,225	80,158	140,932
1936	R	−6.8%	65,117	74,899	143,013
1932	R	−38.8%	32,413	75,291	110,409
1928	R	−47.6%	29,378	83,092	112,941
1924	R	−69.4%	6,368	41,998	51,345
1920	R	−54.1%	9,602	34,126	45,293
1916	R	−34.7%	7,742	16,315	24,734
1912	R	−10.4%	6,001	8,418	23,238
1908	R	−44.1%	5,727	15,184	21,461
1904	R	−59.5%	3,586	15,032	19,236
1900	R	−51.9%	4,249	13,794	18,401
1896	R	−52.8%	4,169	13,979	18,572
1892	R	−24.6%	5,520	9,272	15,269
1888	—	No data	—	—	—
1884	—	No data	—	—	—
1880	—	No data	—	—	—
1876	—	No data	—	—	—

Demographics

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

American

100.0%

Polish

1.1%

African American

17.8%

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. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.

Age distribution by sex

Median age: 39.1 in this county, 39.1 nationally

Male

Age

Female

0.7%

85+

1.5%

2.1%

75–84

2.8%

4.8%

65–74

5.6%

6.3%

55–64

6.9%

5.8%

45–54

6.0%

6.4%

35–44

6.7%

6.2%

25–34

6.5%

4.9%

18–24

4.9%

8.4%

5–17

8.0%

2.9%

2.8%

Source · American Community Survey 5-year estimates, 2024 release.

Median household income

2024 inflation-adjusted dollars

$89,546

Delaware County ranks in the top 10% of US counties.

Delaware County$89,546

Pennsylvania$77,971

United States$80,734

Source · American Community Survey 5-year estimates, 2024 release.

Poverty rate

All persons below federal poverty line

10.2%

Children face moderate poverty.

Children under 1818.0%

Working age (18–64)100.0%

Seniors (65+)18.0%

Source · American Community Survey 5-year estimates, 2024 release.

Language at home

Population aged 5 and older

0.0%

speak English only

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

33.6%

Other Christian

4.4%

Mainline Protestant

4.4%

Non-Christian

3.4%

Methodist

2.2%

Baptist

1.4%

Pentecostal & Holiness

0.6%

Source · 2020 US Religion Census. Remaining 50.0% of residents not counted as adherents by any reporting body.

Delaware County shifted from a longtime Republican stronghold to reliably Democratic territory over the past decade, driven by suburban realignment among college-educated voters. Its 2024 margin of D+23.7 reflects one of the sharpest reversals in Pennsylvania's collar counties.

The Democratic margin in Delaware County has been steady. It reached its modern peak at twenty-seven points in 2020; the 2024 margin was twenty-four points, still in line with the county's long pattern.

Delaware County's political identity is inseparable from its demographic profile: a 63% non-Hispanic-white share, a median household income of $89,546, and the full diversity of a major metropolitan center. The county's voting pattern resembles other major urban centers most closely — Montgomery County and Clayton County.

Most similar counties

Delaware County is one of the bluest places in America.