Island County, Washington

2024 results by precinct

90 precincts · 52,449 votes cast

Harris · D+16

Harris +50

Trump +50

Real precinct boundaries. Hover for vote totals.

38 presidential elections

Year	Won	Margin	Democratic	Republican	Total
2024	D	+16.5%	29,595	20,967	52,449
2020	D	+12.0%	29,213	22,746	53,925
2016	D	+5.6%	20,960	18,465	44,273
2012	D	+4.4%	21,478	19,605	42,372
2008	D	+6.2%	22,058	19,426	42,159
2004	R	−4.0%	18,216	19,754	38,580
2000	R	−4.9%	14,778	16,408	33,004
1996	R	−0.8%	12,157	12,387	28,464
1992	D	+0.1%	9,555	9,526	27,168
1988	R	−18.9%	8,510	12,552	21,353
1984	R	−32.5%	6,850	13,548	20,616
1980	R	−29.7%	5,422	10,926	18,559
1976	R	−13.8%	5,859	7,804	14,104
1972	R	−39.5%	3,149	7,495	11,003
1968	R	−10.5%	3,238	4,077	8,000
1964	D	+12.9%	3,946	3,044	6,999
1960	R	−18.5%	2,470	3,596	6,094
1956	R	−22.7%	2,009	3,196	5,222
1952	R	−24.0%	1,772	2,901	4,703
1948	R	−3.0%	1,694	1,805	3,680
1944	D	+5.5%	1,662	1,487	3,187
1940	D	+8.3%	1,626	1,371	3,057
1936	D	+27.2%	1,687	921	2,813
1932	D	+26.8%	1,517	803	2,662
1928	R	−44.6%	556	1,487	2,087
1924	R	−39.9%	114	832	1,799
1920	R	−34.7%	285	883	1,725
1916	D	+2.8%	855	804	1,845
1912	R	−1.4%	310	332	1,573
1908	R	−33.4%	192	450	773
1904	R	−57.9%	83	424	589
1900	R	−33.3%	123	263	420
1896	R	−3.7%	191	206	405
1892	R	−8.6%	127	161	396
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%

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: 44.8 in this county, 39.1 nationally

Male

Age

Female

1.0%

85+

1.3%

4.1%

75–84

4.5%

7.5%

65–74

8.5%

6.4%

55–64

7.2%

4.7%

45–54

4.8%

6.2%

35–44

5.6%

6.7%

25–34

6.1%

4.9%

18–24

3.3%

6.4%

5–17

6.1%

2.4%

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

Median household income

2024 inflation-adjusted dollars

$90,551

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

Island County$90,551

Washington$98,141

United States$80,734

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

Poverty rate

All persons below federal poverty line

7.7%

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

Other Christian

41.0%

Catholic & Orthodox

6.1%

Mainline Protestant

3.9%

Pentecostal & Holiness

2.0%

Baptist

1.6%

Methodist

0.9%

Non-Christian

0.2%

Source · 2020 US Religion Census. Remaining 44.3% of residents not counted as adherents by any reporting body.

Island County's two main islands host Naval Air Station Whidbey Island, yet the county returned a Democratic presidential margin of 16 points in 2024, suggesting its substantial military-connected population does not translate into the rightward lean seen in many base counties.

The county's recent history is a story of close margins. The Democratic margin reached twenty-seven points in 1936; the Republican margin reached fifty-eight points in 1904. Most other elections have been decided by single-digit points.

Island County's demographics — a population of 86,836, a 78% non-Hispanic-white share, a median household income of $90,551 — situate the county close to national averages on several dimensions. The county's voting pattern over the last decade is most similar to that of Los Alamos County and Fayette County.

Most similar counties

Island County delivered a near-tie in 2024.