| McHenry KinderCare | 4717 W Crystal Lake Rd, Mchenry, IL 60050 | Preschool |
| Barlina House Preschool | 1 E Crystal Lake Ave, Crystal Lake, IL 60014 | Preschool |
| Bethany Lutheran Preschool | 76 W Crystal Lake Ave, Crystal Lake, IL 60014 | Preschool |
| Brown Bear Daycare and Learning Center | 21007 Mcguire Rd, Harvard, IL 60033 | Center |
| Cary Head Start | 100 N Benton St Ste 3, Woodstock, IL 60098 | Preschool |
| Childrens Gate Montessori | 3419 Walkup Rd, Crystal Lake, IL 60012 | Preschool |
| Childtime of Mchenry - CLOSED | 4201 W Medical Center Dr, Mchenry, IL 60050 | Center |
| Community Montessori Preschool Daycare | 640 McHenry Ave, Woodstock, IL 60098 | Preschool |
| Crystal Lake Head Start | 100 N Benton St, Woodstock, IL 60098 | Preschool |
| Crystal Lake Montessori Preschool | 3013 S Country Club, Woodstock, IL 60098 | Preschool |
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| Enrichment Preschool | 210 S McHenry Ave, Crystal Lake, IL 60014 | Preschool |
| First United Methodist Nursery School | 236 W Crystal Lake Ave, Crystal Lake, IL 60014 | Center |
| First United Methodist Preschool | 207 S Fleming Rd, Woodstock, IL 60098 | Preschool |
| Friendship House | 100 S Main St Ste 400, Crystal Lake, IL 60014 | Center |
| Grace Lutheran Preschool | 1300 Kishwaukee Valley Rd, Woodstock, IL 60098 | Preschool |
| Harrison Elementary School Preschool | 6809 Mccullom Lk Rd, Wonder Lake, IL 60097 | Preschool |
| Harvard Head Start | 100 N Benton St, Woodstock, IL 60098 | Preschool |
| Harvard Pre-School | Po Box 334, Harvard, IL 60033 | Preschool |
| House of Children | 2521 Harding Ln, Woodstock, IL 60098 | Center |
| Immanuel Lutheran School Preschool | 300 S Pathway Ct, Crystal Lake, IL 60014 | Preschool |
| Kiddie Campus | 6610 W Rt 120, Mchenry, IL 60050 | Center |
| Kids Unlimited Preschool | 330 E Jackson St, Woodstock, IL 60098 | Preschool |
| Learning Tree Preschool of Crystal Lake | 485 W Woodstock St, Crystal Lake, IL 60014 | Preschool |
| Little Wonders Learning Center | 7407 Hancock Dr, Wonder Lake, IL 60097 | Center |
| Lord and Savior Lutheran Preschool | 9300 Ridgefield Rd, Crystal Lake, IL 60012 | Preschool |
| Martin Elementary School Preschool | 10920 Reed Rd, Lake In The Hills, IL 60156 | Preschool |
| Mc Henry Headstart Day Care Center | 100 N Benton St, Woodstock, IL 60098 | Preschool |
| McHenry County College Childrens Learning Center | 8900 Us Highway 14 Bldg C, Crystal Lake, IL 60012 | Center |
| McHenry Montessori School | 5213 W Elm St, Mchenry, IL 60050 | Center |
| McHenry Montessori School Preschool | 5213 W Elm St, Mchenry, IL 60050 | Preschool |
| Montessori Pathways | 133 Illinois St, Crystal Lake, IL 60014 | Preschool |
| Montessori Pathways School | 133 Illinois Str, Crystal Lake, IL 60014 | Center |
| My Father's World Preschool | 932 S McHenry Ave, Crystal Lake, IL 60014 | Preschool |
| Olson Elementary School Preschool | 720 W Judd St, Woodstock, IL 60098 | Preschool |
| Prairiewood Elementary School Preschool | 3215 Hercules Rd, Woodstock, IL 60098 | Preschool |
| Sedom Center Preschool | 1200 Claussen Dr, Woodstock, IL 60098 | Preschool |
| South Elementary School Preschool | 601 Golf Rd, Crystal Lake, IL 60014 | Preschool |
| St Paul's Christian Preschool | 485 W Woodstock St, Crystal Lake, IL 60014 | Preschool |
| St. John's Little Blessings Learning Center | 6821 Main St, Union, IL 60180 | Center |
| St. John's Lutheran Preschool | 401 Saint Johns Rd, Woodstock, IL 60098 | Preschool |
| The Children's Gate | 3419 Walkup Rd, Crystal Lake, IL 60012 | Center |
| The Goddard School | 4561 Princeton Ln, Lake In The Hills, IL 60156 | Center |
| The Learning Tree of Huntley | 11424 Rainsford Dr, Huntley, IL 60142 | Center |
| The Little Nut Hut | 825 Indian Oaks Trl, Marengo, IL 60152 | Center |
| Thunderbird Preschool | 625 Rudat Ct, Crystal Lake, IL 60014 | Preschool |
| Verda Dierzen Early Learning Center | 2045 N Seminary Ave, Woodstock, IL 60098 | Preschool |
| Woodstock Christian School Preschool | 1201 Dean St, Woodstock, IL 60098 | Preschool |
| Woodstock Early Learning Center | 350 Christian Way, Woodstock, IL 60098 | Center |
| Woodstock Head Start | 100 N Benton St, Woodstock, IL 60098 | Preschool |
| Zion Lutheran School Preschool | 408 Jackson St, Marengo, IL 60152 | Preschool |
| Zion Lutheran School and Preschool | 4206 W Elm St, Mchenry, IL 60050 | Preschool |