Ontario County Population 2018

Ontario County's estimated population is 109,899 with a growth rate of 0.29% in the past year according to the most recent United States census data. Ontario County is the 26th largest county in New York.

Year Population Growth Growth Rate
2017109,8993130.29%
2016109,5861550.14%
2015109,431110.01%
2014109,4203030.28%
2013109,1174860.45%
2012108,631330.03%
2011108,5984330.40%
2010108,16513,06413.74%
199095,1016,1926.96%
198088,90910,06012.76%
197078,84910,77915.84%
196068,0707,89813.13%
195060,1724,8658.80%
194055,3071,0311.90%
193054,2761,6243.08%
192052,6523660.70%
191052,2862,6815.40%
190049,6051,1522.38%
189048,453-1,088-2.20%
188049,5414,4339.83%
187045,1085451.22%
186044,5636341.44%
185043,9294280.98%
184043,5013,2137.98%
183040,288-47,979-54.36%
182088,26746,235110.00%
181042,03226,814176.20%
180015,21814,1431315.63%
17901,0750.00%

Ontario County Population Growth

Population Data via

Ontario County Race Data

Race Population Percentage
White103,07493.79%
Black or African American2,8832.62%
Two or More Races1,9841.81%
Asian1,3071.19%
American Indian and Alaska Native3650.33%
Native Hawaiian and Other Pacific Islander410.04%

Ontario County Population Pyramid

0k1k2k3k4k Male Population0k1k2k3k4k 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