Mercer County Population 2017

Mercer County's estimated population is 15,730 with a growth rate of -0.69% in the past year according to the most recent United States census data. Mercer County is the 72nd largest county in Illinois.

Year Population Growth Growth Rate
201615,730-109-0.69%
201515,839-125-0.78%
201415,964-169-1.05%
201316,133-57-0.35%
201216,190-156-0.95%
201116,346-69-0.42%
201016,415-875-5.06%
199017,290-1,996-10.35%
198019,2861,99211.52%
197017,2941450.85%
196017,149-225-1.30%
195017,374-327-1.85%
194017,7011,0606.37%
193016,641-2,159-11.48%
192018,800-923-4.68%
191019,723-1,222-5.83%
190020,9452,40012.94%
189018,545-957-4.91%
188019,5027333.91%
187018,7693,72724.78%
186015,0429,796186.73%
18505,2462,894123.04%
18402,3522,3268946.15%
1830260.00%

Mercer County Population Growth

Population Data via

Mercer County Race Data

Race Population Percentage
White15,50398.56%
Two or More Races1460.93%
Black or African American1030.65%
Asian620.39%
American Indian and Alaska Native220.14%
Native Hawaiian and Other Pacific Islander30.02%

Mercer County Population Pyramid

0k0k0k0k0k1k1kMercer County Male Population0k0k0k0k0k1k1kMercer County Female Population

Population of Cities in Mercer County

City 2010 Census 2016 Estimated Growth Growth Rate
Aledo36463516-130-3.57%
Viola955910-45-4.71%
Alexis831799-32-3.85%
Matherville721673-48-6.66%
New Boston683643-40-5.86%
Sherrard640600-40-6.25%
Keithsburg609573-36-5.91%
Joy417385-32-7.67%
Seaton222211-11-4.95%
North Henderson187178-9-4.81%
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