Ada County Population 2017

Ada County's estimated population is 444,028 with a growth rate of 2.44% in the past year according to the most recent United States census data. Ada County is the 1st largest county in Idaho.

Year Population Growth Growth Rate
2016444,02810,5612.44%
2015433,4677,0471.65%
2014426,42010,2432.46%
2013416,1777,2781.78%
2012408,8997,7811.94%
2011401,1187,6351.94%
2010393,483187,70891.22%
1990205,77532,73918.92%
1980173,03660,80654.18%
1970112,23018,77020.08%
196093,46022,81132.29%
195070,64920,24840.17%
194050,40112,47632.90%
193037,9252,7127.70%
192035,2136,12521.06%
191029,08817,529151.65%
190011,5593,19138.13%
18908,3683,69479.03%
18804,6741,99974.73%
18702,6750.00%

Ada County Population Growth

Population Data via

Ada County Race Data

Race Population Percentage
White400,57290.21%
Two or More Races11,6712.63%
Asian11,2762.54%
Black or African American5,4151.22%
American Indian and Alaska Native3,6320.82%
Native Hawaiian and Other Pacific Islander9010.20%

Ada County Population Pyramid

0k5k10k15kAda County Male Population0k5k10k15kAda County Female Population

Population of Cities in Ada County

City 2010 Census 2016 Estimated Growth Growth Rate
Meridian76056956231956725.73%
Eagle1994424785484124.27%
Kuna1529817902260417.02%
Garden City10979116026235.67%
Star58298375254643.68%
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