| Kensington School of Western Springs | 1500 Walker St, Western Springs, IL 60558 | Center |
| Ketchings Cradle | 35 S 19th Ave, Maywood, IL 60153 | Center |
| Keystone Montessori School | Po Box 5548, River Forest, IL 60305 | Preschool |
| Kid'z Colony Day Care | 6287 S Archer Ave # 95, Chicago, IL 60638 | Preschool |
| Kid'z Imaginations Day Care | 5334 S Archer Ave, Chicago, IL 60632 | Center |
| Kiddie Junction Educational Institute | 1619 E Oakton St, Des Plaines, IL 60018 | Center |
| Kiddie Korner Academy | 7730 W North Ave, Elmwood Park, IL 60707 | Center |
| Kiddie Korral Academy | Po Box 23020, Chicago, IL 60623 | Center |
| Kiddy Comfort Zone #1 Day Care Center | 817 N Hamlin Ave, Chicago, IL 60651 | Center |
| Kiddy Comfort Zone Day Care Center | 6441 North Ave Ste 103, Oak Park, IL 60302 | Center |
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| Kids In Harmony Day School | 5039 W Berenice Ave, Chicago, IL 60641 | Center |
| Kids Work Chicago | 3842 N Claremont Ave, Chicago, IL 60618 | Preschool |
| Kids World Day Care | 5910 W Montrose Ave # 12, Chicago, IL 60634 | Center |
| Kidslife Daycare Center | 4447 W Fullerton Ave # 55, Chicago, IL 60639 | Preschool |
| Kidwatch Plus | 3901 N Ridgeway Ave, Chicago, IL 60618 | Preschool |
| Kidwatch Plus Inc | 3901 N Ridgeway Ave, Chicago, IL 60618 | Preschool |
| King Elementary School Preschool | 740 S Campbell Ave, Chicago, IL 60612 | Preschool |
| Kinzie Elementary School Preschool | 5625 S Mobile Ave, Chicago, IL 60638 | Preschool |
| Komarek Elementary School Preschool | 8940 W 24th St, Riverside, IL 60546 | Preschool |
| La Progresiva Pre-School | 2609 N Kimball Ave, Chicago, IL 60647 | Preschool |
| Lafayette Elementary School Preschool | 2714 W Augusta Blvd, Chicago, IL 60622 | Preschool |
| Lasalle II Magnet Elementary School Preschool | 1148 N Honore St, Chicago, IL 60622 | Preschool |
| Lathrop Elementary School Preschool | 1440 S Christiana Av, Chicago, IL 60623 | Preschool |
| Lawndale Community Day Care | 1800 S Lawndale Ave, Chicago, IL 60623 | Center |
| Lawndale Elementary Community Academy Preschool | 3500 W Douglas Blvd, Chicago, IL 60623 | Preschool |
| Learn Charter School | 1132 S Homan Ave, Chicago, IL 60624 | Preschool |
| Learning Express Child Care | 7750 W DEVON AVE # 54, Chicago, IL 60631 | Center |
| Learning Network Preschool | 5911 W Midway Park, Chicago, IL 60644 | Preschool |
| Lee's Child Care Center | 1400 W Roosevelt Rd, Broadview, IL 60155 | Center |
| Lee's Child Care Center II | 1420 W Roosevelt Rd, Broadview, IL 60155 | Center |
| Lee's Cuddles N Care | 6106 W North Ave, Chicago, IL 60639 | Center |
| Legacy Elementary Charter School Preschool | 4217 W 18th St, Chicago, IL 60623 | Preschool |
| Leland Elementary School Preschool | 5221 W Congress Pkwy, Chicago, IL 60644 | Preschool |
| Les Finch Learning Tree Day Nursery School | 4217 W 16th St, Chicago, IL 60623 | Center |
| Let's Play Child Care Center | 6041 W 26th St, Cicero, IL 60804 | Center |
| Lewis Elementary School Preschool | 1431 N Leamington Av, Chicago, IL 60651 | Preschool |
| Lexington Elementary School Preschool | 415 Lexington St, Maywood, IL 60153 | Preschool |
| Liberty Elementary School Preschool | 4946 W 13th St, Cicero, IL 60804 | Preschool |
| Lifelink Bensenville Home Soc Headstart | 331 S York Rd, Bensenville, IL 60106 | Preschool |
| Lifelink Head Start Gary Ave | 331 S York Rd, Bensenville, IL 60106 | Preschool |
| Lifelink Headstart - Wheaton | 331 S York Rd, Bensenville, IL 60106 | Preschool |
| Lincoln Elementary School Preschool | 511 Park Ave, River Forest, IL 60305 | Preschool |
| Lincoln Elementary School Preschool | 811 Chicago Ave, Maywood, IL 60153 | Preschool |
| Lincoln Elementary School Preschool | 4300 Grove Ave, Brookfield, IL 60513 | Preschool |
| Lindop Elementary School Preschool | 2400 S 18th Ave, Broadview, IL 60155 | Preschool |
| Linne Elementary School Preschool | 3221 N Sacramento Av, Chicago, IL 60618 | Preschool |
| Little Achievers Child Care Develop Center | 539 Bellwood Ave, Bellwood, IL 60104 | Center |
| Little Angels Learning Center | 4247 N Austin Ave, Chicago, IL 60634 | Center |
| Little Beginnings Daycare | 847 Madison St, Oak Park, IL 60302 | Center |
| Little Folks Cottage | 5926 W Madison St # 30, Chicago, IL 60644 | Center |
| Little Giant's Child Care Center | 3863 W Harrison St, Chicago, IL 60624 | Center |
| Little Lamb Christian Preschool & Kindergarten | 946 E Thacker St, Des Plaines, IL 60016 | Preschool |
| Little Learner's Day Care | 6255 S Mayfield Ave, Chicago, IL 60638 | Center |
| Little Legends Preschool Centers | 206 Chicago Ave # 208, Oak Park, IL 60302 | Preschool |
| Little Miracle Child Care | 3811 W Chicago Ave, Chicago, IL 60651 | Center |
| Little People Montessori Academy | 7942 Ogden Ave, Lyons, IL 60534 | Center |
| Little People's Montessori School | 7500 Skokie Blvd, Skokie, IL 60077 | Center |
| Little Peoples Academy of Arts & Education | 12 N Catherine Ave, La Grange, IL 60525 | Preschool |
| Little Peoples Country | 211 W Hillgrove Ave, La Grange, IL 60525 | Preschool |
| Little Prince Day Care II | 233 N MILL RD, Addison, IL 60101 | Center |
| Little Red Riding Hood | 7628 W Foster Ave # 30, Chicago, IL 60656 | Center |
| Little Scholars Learning Center | 6116 W Irving Park Rd, Chicago, IL 60634 | Center |
| Little Shepherd Day Care | 24 N Hillside Ave, Hillside, IL 60162 | Center |
| Little Shepherds Academy | Po Box 70, Forest Park, IL 60130 | Center |
| Little Sprouts Day Care Center | 324 N York St, Elmhurst, IL 60126 | Center |
| Little Steps Child Care & Development Center | 6108 S Harlem Ave, Summit Argo, IL 60501 | Center |
| Little Village Elementary School Preschool | 2620 S Lawndale Ave, Chicago, IL 60623 | Preschool |
| Littleangels3613@gmail.com | 3613 W Devon, Chicago, IL 60659 | Center |
| Living Witness Learning Daycare Center | 4159 N Laramie Ave, Chicago, IL 60641 | Center |
| Living Word Christian Academy Preschool | 501 Bellwood Ave, Bellwood, IL 60104 | Preschool |
| Liz-ney Land Learning Center II | 6915 29th St, Berwyn, IL 60402 | Center |
| Liz-ney-land Learning Center | 6915 29th St, Berwyn, IL 60402 | Center |
| Lloyd Elementary School Preschool | 2103 N Lamon Ave, Chicago, IL 60639 | Preschool |
| Locke J Elementary School Preschool | 2845 N Newcastle Ave, Chicago, IL 60634 | Preschool |
| Locke A Elementary Charter Academy | 3141 W Jackson Blvd, Chicago, IL 60612 | Preschool |
| Logos Christian Academy Preschool | 7280 N Caldwell Ave, Niles, IL 60714 | Preschool |
| Lombard Park District - Kiddie Campus Preschool | 820 S Finley Rd, Lombard, IL 60148 | Preschool |
| Longfellow Elementary School Preschool | 715 Highland Ave, Oak Park, IL 60304 | Preschool |
| Lor-Jon Montessori Pre-School | 367 S Spring Rd, Elmhurst, IL 60126 | Preschool |
| Lor-Jon Montessori School | 367 S Spring Rd, Elmhurst, IL 60126 | Preschool |
| Lovett Elementary School Preschool | 6333 W Bloomingdale, Chicago, IL 60639 | Preschool |
| Loving Hands Preschool of Hope | 6455 Joliet Rd, La Grange, IL 60525 | Preschool |
| Loving Touch Daycare Providers | 1929 N Harlem Ave, Elmwood Park, IL 60707 | Center |
| Lowell Elementary School Preschool | 3320 W Hirsch St, Chicago, IL 60651 | Preschool |
| Luna Park Nursery School & Kindergarten | 3250 W Foster Ave, Chicago, IL 60625 | Preschool |
| Lutheran Day Nursery | 1802 N Fairfield Ave, Chicago, IL 60647 | Preschool |
| Lutheran General Children's Daycare O Hare | 2300 E Devon Ave, Des Plaines, IL 60018 | Center |
| Lutheran General Childrens Daycare Desplains | 9375 W Church St, Des Plaines, IL 60016 | Center |
| Lutheran School of St Luke | 410 S Rush St, Itasca, IL 60143 | Preschool |
| Lydia Learn and Care | 4300 W Irving Park Rd, Chicago, IL 60641 | Preschool |
| Lyon Cubs Day Nursery | 6545 N Cicero Ave, Lincolnwood, IL 60712 | Center |
| MNA St John of God In Christ | 5701 West Midway Park, Chicago, IL 60608 | Preschool |
| Madison Elementary School Preschool | 150 W Madison St, Lombard, IL 60148 | Preschool |
| Magnifico Playhouse | 4248 Grace St, Schiller Park, IL 60176 | Center |
| Malcolm X College Child Development Center | 1900 W Van Buren St, Chicago, IL 60612 | Center |
| Maple Tree Child Learning Center | 446 S 13th Ave, Maywood, IL 60153 | Center |
| Marconi Elementary Community Academy Preschool | 230 N Kolmar Ave, Chicago, IL 60624 | Preschool |
| Marcy-Newberry Association Austin Town Hall | 5610 W Lake St, Chicago, IL 60644 | Preschool |
| Marcy-Newberry Association Marcy Center | 1539 S. Springfield, Chicago, IL 60623 | Center |
| Marillac Social Center | 212 S Francisco Ave, Chicago, IL 60612 | Preschool |