Ottawa County Population

1840–2026

39,233

2026 projection

2.7% since 2020 (decrease)

010K20K30K40K50K1840186018801900192019401960198020002020

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.
202639,233-2480.63%
202539,481-2480.62%
202439,729-810.20%
202339,810-1350.34%
202239,945-1980.49%
202140,143-1600.40%
202040,303-2290.56%
201940,532-2870.70%
201840,819+1670.41%
201740,652+1210.30%

Showing 10 of 33 years.

Ottawa County Demographics

50.6median age

Median age

Female51.1 yrs
Male50.2 yrs

Adults

32,979
11,070 seniors (65+) · 34% of adults21,909 other adults

Sex

Female 50% · 20,016Male 50% · 19,978

Population by age

MaleFemale85+ years, male: 42185+ years, female: 80480–84 years, male: 59380–84 years, female: 55275–79 years, male: 1,13775–79 years, female: 1,13570–74 years, male: 1,42770–74 years, female: 1,61165–69 years, male: 1,77065–69 years, female: 1,62060–64 years, male: 1,77760–64 years, female: 2,03855–59 years, male: 1,54455–59 years, female: 1,25450–54 years, male: 1,36450–54 years, female: 1,24245–49 years, male: 1,10545–49 years, female: 1,05640–44 years, male: 1,06040–44 years, female: 1,08635–39 years, male: 98635–39 years, female: 96830–34 years, male: 1,01530–34 years, female: 1,06625–29 years, male: 1,03625–29 years, female: 79920–24 years, male: 89920–24 years, female: 92515–19 years, male: 1,01615–19 years, female: 1,02110–14 years, male: 1,23610–14 years, female: 9275–9 years, male: 8095–9 years, female: 1,1580–4 years, male: 7830–4 years, female: 75485+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K1.5K1.5K

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 400 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

$76,101median household income

Median household income

$76,101

Half of households earn more, half earn less

Median earnings

$53,345

Typical yearly pay for a worker 25 or older.

Poverty rate

8.4%

About 1 in 12 residents

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

Ottawa County Marital Status

55% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married55%56%55%
Never married23%25%20%
Divorced12%12%12%
Widowed9%5%13%
Separated1%2%<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