Ottawa County Population 2018

Ottawa County's estimated population is 40,657 with a growth rate of 0.40% in the past year according to the most recent United States census data. Ottawa County is the 62nd largest county in Ohio.

Year Population Growth Growth Rate
201740,6571620.40%
201640,495-263-0.65%
201540,758-145-0.35%
201440,903-129-0.31%
201341,032-208-0.50%
201241,240-73-0.18%
201141,313-45-0.11%
201041,3581,3293.32%
199040,029-47-0.12%
198040,0762,9778.02%
197037,0991,7765.03%
196035,3235,85419.86%
195029,4695,10920.97%
194024,3602511.04%
193024,1091,9168.63%
192022,193-167-0.75%
191022,3601470.66%
190022,2132391.09%
189021,9742,21211.19%
188019,7626,39847.87%
187013,3646,34890.48%
18607,0163,708112.09%
18503,3081,06047.15%
18402,2480.00%

Ottawa County Population Growth

Population Data via

Ottawa County Race Data

Race Population Percentage
White39,70097.65%
Two or More Races5071.25%
Black or African American3950.97%
Asian1550.38%
American Indian and Alaska Native890.22%
Native Hawaiian and Other Pacific Islander130.03%

Ottawa County Population Pyramid

0k1k1k2k2k Male Population0k1k1k2k2k Female Population8580757065605550454035302520151050
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990