McHenry County offices and courts will be CLOSED on Monday, Feb. 18th in observance of President's Day.

 Welcome to our website!

HomepageimageMcHenry County residents are touched every day by our services. Every time we eat in a restaurant, register our pets, build a well or septic system, need help for health care, or get our children vaccinated for school, the Health Department is involved to make us safer and healthier.

In addition to Environmental Health permits and inspections, Animal Control and Vital Records, we offer a variety of clinic services to the public.
  • Immunizations
  • TB control
  • Chronic and Communicable disease control
  • Hearing and vision screening for children
  • STD/HIV testing and counseling 

 Melissa H. Adamson on the Northwest Spectrum

Melissa H. Adamson, MPH, talks about her background, goals for The Department, influenza, diabetes and other topics with Stew Cohen, host of the Northwest Spectrum on Star 105.5:



CDC Diabetes Prevention Program Overview

During this Overview Session participants will learn about prerequisites and expectations for attending classes.  At the end of the Overview Session participants will have the chance to sign up for the Lifestyle Change Program. 

The below overview classes will be held at the 620 Dakota Street in Crystal Lake (front of building)

Monday, June 24th 6:00 - 7:00 PM
Wednesday, June 26th 6:00 - 7:00 PM
Wednesday, July 10th 6:00 - 7:00 PM
Monday, July 15th 6:00 - 7:00 PM

Are you at risk for type 2 diabetes?  
Take the test in English or Spanish 

No Cost 6 Week Diabetes Self-Management Classes

Registration is open for McHenry, and  Crystal Lake (Spanish speaking class).  Registration also open for English speaking classes in Marengo, Harvard, Huntley and Woodstock. 

Lo sentimos, pero Tomando Control de su Diabetes en Holy Apostles church ha sido cancelado.

Tomando Control de su Diabetes The Church of Holy Apostles McHenry March 1st

Take Charge of Your Diabetes Marengo Union Library District March 4th

Take Charge of Your Diabetes Harvard Senior Center  Deadline to register is April 10th

Take Charge of Your Diabetes St. Mary Catholic Church Huntley  Deadline to register is April 16th 

 2019 School Health Professionals Symposium

Registration is open for the School Health Professionals Symposium scheduled for 3/8/19 at the Foglia Education Center within Northwestern Huntley Hospital.  The deadline to submit registration forms and payment is February 22nd.  


 Flu Information

For general information about the influenza virus visit our flu facts page or  The cost for a flu shot is $35.00 and appointments are required.

Influenza-like illness (ILI) activity in McHenry County is currently estimated to be moderate (ILI is used to estimate influenza activity and is defined as a fever ≥ 100°F AND new onset of cough and/or sore throat in the absence of a known cause other than influenza). To see the latest McHenry County flu surveillance report, please click here. To view past flu surveillance reports, please click here.



McHenry County Electronics Drop-off Sites

1-29-19 CERA flyer


First Wednesday Wellness Screening

Make an online appointment for a First Wednesday Wellness Screening.  Screenings are held at the Health Department in Woodstock unless otherwise indicated.  The cost of screening is $25.  More information is available by calling 815-334-4531.

March 6, 2019
9:00 - 11:00 AM
August 7, 2019
1:00 - 3:00 PM
April 3 , 2019
1:00 - 3:00 PM
September 4, 2019
9:00 - 11:00 AM
May 1 , 2019
9:00 - 11:00 AM
October 2, 2019
1:00 - 3:00 PM
June 5, 2019
1:00 - 3:00 PM
November 6, 2019
9:00 - 11:00 AM
July 3, 2019
9:00 - 11:00 AM
December 4, 2019
1:00 - 3:00 PM


View Food Inspection Reports

View Food Facility Inspection Reports online.

Meeting Information



MCDH Main Office
Building A
2200 N. Seminary Ave.
Woodstock, IL  60098
Phone: 815.334.4510
Fax: 815.334.4635
After Hours: 815.344.7421
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MCDH Celebrating 50 Years

MCDH Celebrating 50 Years




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