On March 20th, the McHenry County Clerk's office will be closed for regular business, other than for the election. For election assistance, please call 815-334-0236.

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

Take Charge of Your Diabetes
Self-Management Workshop

This 6 week workshop was developed by Stanford University and is free of charge.  If you are at risk for or diagnosed with, or care for someone with diabetes, this workshop can help with a focus on improving physical activity, self care, nutrition and taking individual action steps.
Make an appointment for the Harvard class (this is an English speaking class) or call 815-334-4580;
Make an appointment for the Woodstock class (this is an English speaking class) or call 815-334-4580.
Make an appointment for the Crystal Lake class (this is a Spanish speaking class) or call 312-804-1037
Make an appointment for the Illinois Migrant Council Harvard class (this is a Spanish speaking class) or call 312-804-1037

Diabetes Blood Sugar A1C Screening 

There is no fasting required for this simple finger stick blood test and immediate results will be provided.  There is no charge for this screening however, you must be 18 or older to participate and registration is required. Please register by March 15th.

This clinic is at capacity, please check back for future screening dates and locations.

WIC (Women Infants & Children) Nutritional Supplements 

 For over 40 years, families like yours have depended on the friendly experts at WIC to help you make amazing kids.  WIC supports you and your child from pregnancy to delivery to raising a toddler and up until your child's 5th birthday. Find recipes, breast feeding & child raising tips,  information about nutrition, eligibility and more.

Ordinance Updates

The Department of Health and the Board of Health completed an annual review of the McHenry County Public Health Ordinance, and a few updates have been approved by both the Board of Health and the County Board. These changes are effective January 1, 2018; this document gives an overview as well as redline and final versions of the updates for your review.

Community Health Screenings - Appointments available

Your cholesterol, blood sugar, blood pressure and body mass index numbers are key indicators of your risk for chronic disease.  McHenry County Department of Health (MCDH) will screen for these important risk factors.  Make an appointment  or call 815-334-4510 for more information.

 McHenry County Flu Surveillance

During flu season the Health Department monitors flu surveillance in McHenry County. 2017-2018 flu surveillance through March 10, 2018. For information about protecting yourself from the flu, visit our influenza page.

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