Riley County Population 2018

Riley County's estimated population is 74,172 with a growth rate of -0.50% in the past year according to the most recent United States census data. Riley County is the 7th largest county in Kansas.

Year Population Growth Growth Rate
201774,172-376-0.50%
201674,548-2,111-2.75%
201576,6593640.48%
201476,295-512-0.67%
201376,807-601-0.78%
201277,4084,0585.53%
201173,3501,7862.50%
201071,5644,4256.59%
199067,1393,6345.72%
198063,5056,71711.83%
197056,78814,87435.49%
196041,9148,50925.47%
195033,40512,78862.03%
194020,6177353.70%
193019,882-768-3.72%
192020,6504,86730.84%
191015,7831,95514.14%
190013,8286454.89%
189013,1832,75326.40%
188010,4305,325104.31%
18705,1053,881317.08%
18601,2240.00%

Riley County Population Growth

Population Data via

Riley County Race Data

Race Population Percentage
White63,04485.00%
Black or African American5,2647.10%
Asian3,6554.93%
Two or More Races2,6093.52%
American Indian and Alaska Native5440.73%
Native Hawaiian and Other Pacific Islander1960.26%

Riley County Population Pyramid

0k2k4k6k8k10k Male Population0k2k4k6k8k10k 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