McHenry County Population 2017

McHenry County's estimated population is 307,004 with a growth rate of -0.06% in the past year according to the most recent United States census data. McHenry County is the 6th largest county in Illinois.

Year Population Growth Growth Rate
2016307,004-184-0.06%
2015307,1884390.14%
2014306,749-195-0.06%
2013306,944-585-0.19%
2012307,529-291-0.09%
2011307,820-1,299-0.42%
2010309,119125,87868.70%
1990183,24135,34423.90%
1980147,89736,34232.58%
1970111,55527,34532.47%
196084,21033,55466.24%
195050,65613,34535.77%
194037,3112,2326.36%
193035,0791,9155.77%
192033,1646552.01%
191032,5092,7509.24%
190029,7593,64513.96%
189026,1141,2064.84%
188024,9081,1464.82%
187023,7621,6737.57%
186022,0897,11147.48%
185014,97812,400480.99%
18402,5780.00%

McHenry County Population Growth

Population Data via

McHenry County Race Data

Race Population Percentage
White287,88493.77%
Asian8,6302.81%
Black or African American4,5751.49%
Two or More Races4,5341.48%
American Indian and Alaska Native1,3990.46%
Native Hawaiian and Other Pacific Islander1660.05%

McHenry County Population Pyramid

0k2k4k6k8k10k12kMcHenry County Male Population0k2k4k6k8k10k12kMcHenry County Female Population

Population of Cities in McHenry County

City 2010 Census 2016 Estimated Growth Growth Rate
Crystal Lake4099140339-652-1.59%
Algonquin30049309478982.99%
Huntley243162661122959.44%
Woodstock24764250853211.30%
Cary1826817840-428-2.34%
Harvard94359119-316-3.35%
Marengo76757445-230-3.00%
Spring Grove57725674-98-1.70%
Fox River Grove47914651-140-2.92%
Wonder Lake40143899-115-2.86%
Richmond18761897211.12%
Hebron12161194-22-1.81%
Ringwood836818-18-2.15%
Union580552-28-4.83%
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