Ottawa County Population

1840–2026

310.73K

2026 projection

4.7% since 2020 (increase)

050K100K150K200K250K300K350K1840186018801900192019401960198020002020

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 Ottawa County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026310,728+2,2690.74%
2025308,459+2,2690.74%
2024306,190+2,6250.86%
2023303,565+2,7280.91%
2022300,837+2,4680.83%
2021298,369+1,4760.50%
2020296,893+5,4331.86%
2019291,460+1,8820.65%
2018289,578+3,1261.09%
2017286,452+2,7660.98%

Showing 10 of 33 years.

Ottawa County Demographics

36.5median age

Median age

Female37.1 yrs
Male35.8 yrs

Adults

231,928
50,320 seniors (65+) · 22% of adults181,608 other adults

Sex

Female 50.4% · 151,791Male 49.6% · 149,412

Population by age

MaleFemale85+ years, male: 2,37185+ years, female: 3,79680–84 years, male: 2,79980–84 years, female: 3,37075–79 years, male: 3,75875–79 years, female: 4,73170–74 years, male: 6,42370–74 years, female: 7,21765–69 years, male: 7,78965–69 years, female: 8,06660–64 years, male: 8,92060–64 years, female: 8,88555–59 years, male: 8,69255–59 years, female: 9,06150–54 years, male: 8,38050–54 years, female: 8,29845–49 years, male: 8,27245–49 years, female: 8,05640–44 years, male: 8,61740–44 years, female: 8,29635–39 years, male: 10,14435–39 years, female: 10,21430–34 years, male: 9,28330–34 years, female: 9,12525–29 years, male: 9,56925–29 years, female: 8,84320–24 years, male: 13,36020–24 years, female: 13,23115–19 years, male: 11,93115–19 years, female: 13,11610–14 years, male: 10,44910–14 years, female: 9,8865–9 years, male: 10,1565–9 years, female: 9,4900–4 years, male: 8,4990–4 years, female: 8,11085+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45K5K10K10K

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 3,012 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

Ottawa County Income

$90,502median household income

Median household income

$90,502

Half of households earn more, half earn less

Median earnings

$54,703

Typical yearly pay for a worker 25 or older.

Poverty rate

8.3%

About 1 in 12 residents

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

Ottawa County Marital Status

56% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married56%57%55%
Never married31%33%29%
Divorced8%7%9%
Widowed4%2%7%
Separated<1%<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