Ottawa County Population 2017

Ottawa County's estimated population is 40,636 with a growth rate of -0.55% 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
201640,636-223-0.55%
201540,859-160-0.39%
201441,019-67-0.16%
201341,086-221-0.54%
201241,307-84-0.20%
201141,391-3-0.01%
201041,3941,3653.41%
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
White39,70097.70%
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

0k1k1k2k2kOttawa County Male Population0k1k1k2k2kOttawa County Female Population

Population of Cities in Ottawa County

City 2010 Census 2016 Estimated Growth Growth Rate
Port Clinton60565945-111-1.83%
Oak Harbor27592737-22-0.80%
Genoa23362284-52-2.23%
Elmore14101380-30-2.13%
Rocky Ridge417405-12-2.88%
Clay Center2763153914.13%
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