Williamson County Population 2017

Williamson County's estimated population is 67,560 with a growth rate of -0.04% in the past year according to the most recent United States census data. Williamson County is the 22nd largest county in Illinois.

Year Population Growth Growth Rate
201667,560-29-0.04%
201567,5892390.35%
201467,350-37-0.05%
201367,3875940.89%
201266,793520.08%
201166,7413030.46%
201066,4388,70515.08%
199057,7331,1952.11%
198056,5387,51715.33%
197049,0212,9046.30%
196046,117-2,504-5.15%
195048,621-2,803-5.45%
194051,424-2,456-4.56%
193053,880-7,212-11.81%
192061,09215,99435.46%
191045,09817,30262.25%
190027,7965,57025.06%
189022,2262,90215.02%
188019,3241,99511.51%
187017,3295,12441.98%
186012,2054,98969.14%
18507,2162,75961.90%
18404,4570.00%

Williamson County Population Growth

Population Data via

Williamson County Race Data

Race Population Percentage
White62,41492.38%
Black or African American3,0604.53%
Two or More Races1,1091.64%
Asian7241.07%
American Indian and Alaska Native2660.39%
Native Hawaiian and Other Pacific Islander160.02%

Williamson County Population Pyramid

0k1k1k2k2k3kWilliamson County Male Population0k1k1k2k2k3kWilliamson County Female Population

Population of Cities in Williamson County

City 2010 Census 2016 Estimated Growth Growth Rate
Marion17216178266103.54%
Herrin12523129504273.41%
Carterville550258433416.20%
Johnston City35573488-69-1.94%
Cambria12281271433.50%
Energy11461142-4-0.35%
Hurst79579610.13%
Pittsburg572559-13-2.27%
Creal Springs543532-11-2.03%
Freeman Spur292290-2-0.68%
Colp225224-1-0.44%
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