Jefferson County Population 2018

Jefferson County's estimated population is 18,998 with a growth rate of 0.75% in the past year according to the most recent United States census data. Jefferson County is the 29th largest county in Kansas.

Year Population Growth Growth Rate
201718,9981420.75%
201618,856420.22%
201518,814-7-0.04%
201418,821320.17%
201318,789-88-0.47%
201218,877-79-0.42%
201118,956-181-0.95%
201019,1373,23220.32%
199015,9056984.59%
198015,2073,26227.31%
197011,9456936.16%
196011,2521681.52%
195011,084-1,634-12.85%
194012,718-1,411-9.99%
193014,129-621-4.21%
192014,750-1,076-6.80%
191015,826-1,707-9.74%
190017,5339135.49%
189016,6201,0576.79%
188015,5633,03724.25%
187012,5268,067180.92%
18604,4590.00%

Jefferson County Population Growth

Population Data via

Jefferson County Race Data

Race Population Percentage
White18,16895.63%
Two or More Races3641.92%
American Indian and Alaska Native1901.00%
Black or African American1140.60%
Asian430.23%
Native Hawaiian and Other Pacific Islander70.04%

Jefferson County Population Pyramid

0k0k0k1k1k Male Population0k0k0k1k1k 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