Island County Population

1860–2026

85,332

2026 projection

1.9% since 2020 (decrease)

020K40K60K80K100K186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Island County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202685,332-3250.38%
202585,657-3250.38%
202485,982-2120.25%
202386,194-5440.63%
202286,738-8680.99%
202187,606+6050.70%
202087,001+1,6571.94%
201985,344+9531.13%
201884,391+1,0291.23%
201783,362+1,5361.88%

Showing 10 of 31 years.

Island County Demographics

44.8median age

Median age

Female47.6 yrs
Male42.6 yrs

Adults

71,787
23,259 seniors (65+) · 32% of adults48,528 other adults

Sex

Female 49.7% · 43,160Male 50.3% · 43,676

Population by age

MaleFemale85+ years, male: 83285+ years, female: 1,08980–84 years, male: 1,27780–84 years, female: 1,40975–79 years, male: 2,27575–79 years, female: 2,47970–74 years, male: 3,01070–74 years, female: 3,22165–69 years, male: 3,50865–69 years, female: 4,15960–64 years, male: 3,17760–64 years, female: 3,73755–59 years, male: 2,33855–59 years, female: 2,47250–54 years, male: 2,15050–54 years, female: 2,12845–49 years, male: 1,92945–49 years, female: 2,04740–44 years, male: 2,85240–44 years, female: 2,00735–39 years, male: 2,54935–39 years, female: 2,88830–34 years, male: 2,84330–34 years, female: 2,55825–29 years, male: 2,96225–29 years, female: 2,74720–24 years, male: 3,42420–24 years, female: 2,15015–19 years, male: 2,01815–19 years, female: 1,91910–14 years, male: 2,36710–14 years, female: 2,1975–9 years, male: 2,0765–9 years, female: 1,9030–4 years, male: 2,0890–4 years, female: 2,05085+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–42K2K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 868 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Island County Income

$90,551median household income

Median household income

$90,551

Half of households earn more, half earn less

Median earnings

$55,672

Typical yearly pay for a worker 25 or older.

Poverty rate

7.7%

About 1 in 13 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Island County Marital Status

60% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married60%60%59%
Never married23%27%18%
Divorced11%8%13%
Widowed6%3%9%
Separated1%1%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year