Hamilton County Population 2018

Hamilton County's estimated population is 323,747 with a growth rate of 2.36% in the past year according to the most recent United States census data. Hamilton County is the 4th largest county in Indiana.

Year Population Growth Growth Rate
2017323,7477,4512.36%
2016316,2967,5222.44%
2015308,7745,9461.96%
2014302,8286,0392.03%
2013296,7897,1902.48%
2012289,5996,3262.23%
2011283,2736,7972.46%
2010276,476167,540153.80%
1990108,93626,90932.81%
198082,02727,49550.42%
197054,53214,40035.88%
196040,13211,64140.86%
195028,4913,87715.75%
194024,6141,1704.99%
193023,444-778-3.21%
192024,222-2,804-10.38%
191027,026-2,888-9.65%
190029,9143,79114.51%
189026,1231,3225.33%
188024,8013,91918.77%
187020,8823,57220.64%
186017,3104,62636.47%
185012,6842,82928.71%
18409,8558,098460.90%
18301,7570.00%

Hamilton County Population Growth

Population Data via

Hamilton County Race Data

Race Population Percentage
White272,50084.17%
Asian17,8905.53%
Black or African American12,2893.80%
Two or More Races5,6861.76%
American Indian and Alaska Native6330.20%
Native Hawaiian and Other Pacific Islander1740.05%

Hamilton County Population Pyramid

0k2k4k6k8k10k12k14k Male Population0k2k4k6k8k10k12k14k 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