Ottawa County Population

1900–2026

30,447

2026 projection

0.7% since 2020 (increase)

010K20K30K40K50K1900192019401960198020002020

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.
202630,447+90.03%
202530,438+90.03%
202430,429+1380.46%
202330,291-780.26%
202230,369-180.06%
202130,387+1470.49%
202030,240-9403.01%
201931,180-1520.49%
201831,332-750.24%
201731,407-2100.66%

Showing 10 of 27 years.

Ottawa County Demographics

37.2median age

Median age

Female38.5 yrs
Male35.8 yrs

Adults

22,681
5,500 seniors (65+) · 24% of adults17,181 other adults

Sex

Female 50.7% · 15,371Male 49.3% · 14,970

Population by age

MaleFemale85+ years, male: 19985+ years, female: 31280–84 years, male: 30580–84 years, female: 36175–79 years, male: 44775–79 years, female: 64770–74 years, male: 68470–74 years, female: 76465–69 years, male: 84265–69 years, female: 93960–64 years, male: 1,03360–64 years, female: 1,02555–59 years, male: 75655–59 years, female: 89350–54 years, male: 86650–54 years, female: 86745–49 years, male: 82645–49 years, female: 80240–44 years, male: 77640–44 years, female: 84635–39 years, male: 87935–39 years, female: 87430–34 years, male: 90130–34 years, female: 98925–29 years, male: 90325–29 years, female: 90320–24 years, male: 1,08420–24 years, female: 95015–19 years, male: 1,20215–19 years, female: 1,09410–14 years, male: 1,19310–14 years, female: 1,0605–9 years, male: 1,0755–9 years, female: 1,0670–4 years, male: 9990–4 years, female: 97885+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K

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 303 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

$49,947median household income

Median household income

$49,947

Half of households earn more, half earn less

Median earnings

$38,918

Typical yearly pay for a worker 25 or older.

Poverty rate

20.9%

About 1 in 5 residents

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

Ottawa County Marital Status

47% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married47%48%45%
Never married29%34%24%
Divorced14%12%15%
Widowed9%5%13%
Separated2%2%3%

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