Marin County, California

2024 results by precinct

115 precincts · 144,129 votes cast

Harris · D+64

Harris +50

Trump +50

Real precinct boundaries. Hover for vote totals.

38 presidential elections

Year	Won	Margin	Democratic	Republican	Total
2024	D	+63.9%	116,152	24,054	144,129
2020	D	+66.5%	128,288	24,612	155,830
2016	D	+61.8%	108,707	21,771	140,683
2012	D	+51.2%	99,896	30,880	134,731
2008	D	+57.6%	109,320	28,384	140,570
2004	D	+47.8%	99,070	34,378	135,325
2000	D	+35.9%	79,135	34,872	123,155
1996	D	+29.9%	67,406	32,714	116,140
1992	D	+34.9%	76,158	30,479	130,707
1988	D	+19.1%	69,394	46,855	117,920
1984	D	+0.6%	57,533	56,887	116,050
1980	R	−9.6%	39,231	49,678	108,507
1976	R	−9.7%	43,590	53,425	101,715
1972	R	−6.5%	47,414	54,123	103,883
1968	R	−6.2%	36,278	41,422	82,755
1964	D	+23.6%	46,462	28,682	75,364
1960	R	−14.8%	27,888	37,620	65,665
1956	R	−32.2%	17,301	33,792	51,244
1952	R	−34.6%	14,236	29,574	44,278
1948	R	−18.9%	12,540	18,747	32,855
1944	D	+4.3%	14,516	13,304	27,896
1940	D	+1.7%	11,365	10,974	22,640
1936	D	+32.0%	12,152	6,211	18,572
1932	D	+19.3%	9,764	6,480	16,996
1928	R	−15.9%	5,686	7,862	13,688
1924	R	−47.4%	656	5,780	10,800
1920	R	−47.2%	1,688	5,375	7,813
1916	R	−6.2%	3,789	4,328	8,647
1912	D	+44.5%	2,849	0	6,400
1908	R	−43.7%	983	2,732	4,003
1904	R	−45.9%	772	2,199	3,110
1900	R	−29.4%	904	1,681	2,644
1896	R	−24.3%	874	1,448	2,358
1892	R	−10.7%	949	1,186	2,213
1888	R	−7.6%	802	936	1,774
1884	R	−7.8%	727	851	1,587
1880	R	−14.9%	561	761	1,345
1876	R	−2.5%	619	651	1,270

Demographics

Race, ethnicity, and ancestry

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

American

100.0%

Irish

0.7%

African American

1.8%

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: 47.4 in this county, 39.1 nationally

Male

Age

Female

1.1%

85+

1.8%

3.6%

75–84

4.3%

6.0%

65–74

7.1%

7.3%

55–64

7.7%

7.3%

45–54

7.3%

6.0%

35–44

5.8%

4.5%

25–34

4.0%

3.6%

18–24

3.5%

7.7%

5–17

7.3%

2.3%

2.1%

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

Median household income

2024 inflation-adjusted dollars

$149,091

Marin County ranks in the top 0.5% of US counties.

Marin County$149,091

California$99,122

United States$80,734

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

Poverty rate

All persons below federal poverty line

8.3%

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

23.7%

Non-Christian

5.8%

Mainline Protestant

2.8%

Other Christian

2.4%

Baptist

1.3%

Pentecostal & Holiness

0.7%

Methodist

0.3%

Source · 2020 US Religion Census. Remaining 63.0% of residents not counted as adherents by any reporting body.

Marin County's D+63.9 margin in 2024 places it among the most heavily Democratic counties in the country, a pattern sustained by high educational attainment and coastal affluence that have long defined its electorate.

The unraveling was not abrupt. The Democratic margin in Marin County peaked at sixty-seven points in 2020; it narrowed steadily over the late twentieth century. The 1984 election delivered the county to the Republican party for the first time in many years, by a margin of one points. By 2024, the margin had widened further.

The economic and demographic context is severe. Marin County's median household income of $149,091 is among the lowest of any county in the United States; 8% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Denver County and Dane County.

Most similar counties

For thirty-two years, Marin County voted Republican. Then it stopped.