Jefferson County Population 2017

Jefferson County's estimated population is 18,897 with a growth rate of 0.06% in the past year according to the most recent United States census data. Jefferson County is the 30th largest county in Kansas.

Year Population Growth Growth Rate
201618,897110.06%
201518,886230.12%
201418,863280.15%
201318,835-86-0.45%
201218,921-62-0.33%
201118,983-150-0.78%
201019,1333,22820.30%
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
White18,16896.14%
Two or More Races3641.93%
American Indian and Alaska Native1901.01%
Black or African American1140.60%
Asian430.23%
Native Hawaiian and Other Pacific Islander70.04%

Jefferson County Population Pyramid

0k0k0k1k1kJefferson County Male Population0k0k0k1k1kJefferson County Female Population

Population of Cities in Jefferson County

City 2010 Census 2016 Estimated Growth Growth Rate
Valley Falls11921149-43-3.61%
Oskaloosa11131078-35-3.14%
Perry929906-23-2.48%
Meriden813783-30-3.69%
Ozawkie645629-16-2.48%
Nortonville637613-24-3.77%
Winchester551530-21-3.81%
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