Ottawa County, Michigan Population

Current Population

308,459

Estimated July 1, 2025

+11,566 residents(+3.9%)since 2020

Latest Official Census

296,200

2020 Census

Population Over Time

Estimated population changed from 296,893 in 2020 to 308,459 in 2025.

2020 Census202020212022202320242025310,000294,000
Population over time, 2020 to 2025. Select a year for its exact population.
Annual population estimates by year.
YearPopulationChange% change
2020296,893——
2021298,369+1,476+0.5%
2022300,837+2,468+0.8%
2023303,565+2,728+0.9%
2024306,190+2,625+0.9%
2025308,459+2,269+0.7%

2020 Census (official count): 296,200

Sources & Methodology

Current estimate — 308,459 · July 1, 2025

U.S. Census Bureau — County Resident Population Estimates (CO-EST2025-ALLDATA), Vintage 2025

Official Census — 296,200 · April 1, 2020

U.S. Census Bureau — 2020 Census Redistricting Data (P.L. 94-171), table P1 — county totals (SUMLEV 050)

The current population is an annual estimate. The 2020 Census count is the official Census benchmark. These figures use different methods and may differ.

The change since 2020 compares the July 1, 2020 and July 1, 2025 estimates from the same Census Bureau Population Estimates Program release.

Methodology details

The current population figure is an annual estimate from the U.S. Census Bureau's Population Estimates Program. The 2020 Census is shown separately as the official benchmark. These figures can differ because the Census and annual population estimates are produced at different times using different methods. Both are shown so you can distinguish the most current estimate from the official Census benchmark.

How the change since 2020 is calculated

Both endpoints come from the same release, so the comparison is like for like: 296,893 on July 1, 2020 and 308,459 on July 1, 2025. The change is the later estimate minus the earlier one (+11,566), and the percentage is that change divided by the 2020 estimate (+3.9%). The Decennial Census count is never used as an endpoint here — it is an enumeration on a different reference date, produced by a different method, so subtracting one from the other would measure the difference between two methods as well as the change in population.

Incorporated places in Ottawa County

7 incorporated places: 6 cities and 1 village

Geographic details
FIPS code
26139