| Oglesby Elementary School Preschool | 7646 S Green St, Chicago, IL 60620 | Preschool |
| Old St Marys School Preschool | 1532 S Michigan Ave, Chicago, IL 60605 | Preschool |
| Oliver W Holmes Elementary School Preschool | 508 N Kenilworth Ave, Oak Park, IL 60302 | Preschool |
| Onahan Elementary School Preschool | 6634 W Raven St, Chicago, IL 60631 | Preschool |
| Onward Neighborhood House | 600 N Leavitt St, Chicago, IL 60612 | Preschool |
| Onward Neighborhood House Day Care Programs | 600 N Leavitt St, Chicago, IL 60612 | Center |
| Open Space Early Learning Center | 4846 N Clark St, Ste 200, Chicago, IL 60640 | Center |
| Oriole Park Elementary School Preschool | 5424 N Oketo Ave, Chicago, IL 60656 | Preschool |
| Orr Infant and Family Development | 730 N. Pulaski Rd., Chicago, IL 60606 | Center |
| Ortiz De Dominguez Elementary School Preschool | 3000 S Lawndale Ave, Chicago, IL 60623 | Preschool |
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| Otis Elementary School Preschool | 525 N Armour St, Chicago, IL 60642 | Preschool |
| Otis P Graves Elementary School Preschool | 6021 S 74th Ave, Summit Argo, IL 60501 | Preschool |
| Otoole Elementary School Preschool | 6550 S Seeley Ave, Chicago, IL 60636 | Preschool |
| Ounce of Prevention Fund-Educare Center | 5044 S Wabash Ave, Chicago, IL 60615 | Preschool |
| Our Lady Immaculate Academy Preschool | 410 Washington Blvd, Oak Park, IL 60302 | Preschool |
| Our Lady of Charity Preschool | 3620 S 57th Ct, Cicero, IL 60804 | Preschool |
| Our Lady of Grace School Preschool | 2446 N Ridgeway Ave, Chicago, IL 60647 | Preschool |
| Our Lady of Lourdes Head Start | 1449 S Keeler Ave, Chicago, IL 60623 | Preschool |
| Our Lady of Lourdes Preschool | 4641 N Ashland Ave, Chicago, IL 60640 | Preschool |
| Our Lady of Tepeyac Head Start | 2414 S Albany Ave, Chicago, IL 60623 | Preschool |
| Our Lady of Tepeyac Preschool | 2235 S Albany Ave, Chicago, IL 60623 | Preschool |
| Our Lady of The Snows School Preschool | 4810 S Leamington Av, Chicago, IL 60638 | Preschool |
| Our Lady of Victory Preschool | 4434 N Laramie Ave, Chicago, IL 60630 | Preschool |
| Our Saviour Preschool | 7151 W Cornelia Ave, Chicago, IL 60634 | Preschool |
| Overton Elementary School Preschool | 221 E 49th St, Chicago, IL 60615 | Preschool |
| PLCCA Ceda Head Start | Po Box 950, Maywood, IL 60153 | Preschool |
| PLCCA Debra Ann Porter 24/7 Childcare | Po Box 950, Maywood, IL 60153 | Center |
| PLCCA Proviso-Leyden Council | Po Box 950, Maywood, IL 60153 | Center |
| Paderewski Elementary Learning Academy Preschool | 2221 S Lawndale Ave, Chicago, IL 60623 | Preschool |
| Paec Education Center Preschool | 1636 S 10th Ave, Maywood, IL 60153 | Preschool |
| Palmer Elementary School Preschool | 5051 N Kenneth Ave, Chicago, IL 60630 | Preschool |
| Panda Montessori Academy | 6921 N Ridge Blvd, Chicago, IL 60645 | Center |
| Parent Cooperative For Early Learning | 5300 S South Shore Dr, Chicago, IL 60615 | Center |
| Park Manor Elementary School Preschool | 7037 S Rhodes Ave, Chicago, IL 60637 | Preschool |
| Park View Lutheran School Preschool | 3919 N Monticello Av, Chicago, IL 60618 | Preschool |
| Park View Montessori School III | 640 W Irving Park Rd, Chicago, IL 60613 | Preschool |
| Park West Cooperative Nursery School | 2335 N Orchard St, Chicago, IL 60614 | Preschool |
| Parker Elementary Community Academy Preschool | 6800 S Stewart Ave, Chicago, IL 60621 | Preschool |
| Parkman Elementary School Preschool | 245 W 51st St, Chicago, IL 60609 | Preschool |
| Parkside Elementary Community Academy Preschool | 6938 S East End Ave, Chicago, IL 60649 | Preschool |
| Parkway School Age Day Care | 500 E 67th St, Chicago, IL 60637 | Center |
| Pass It On Academy Preschool | 2446-48 W 63rd St, Chicago, IL 60629 | Preschool |
| Passages Elementary Charter School Preschool | 1643 W Bryn Mawr Ave, Chicago, IL 60660 | Preschool |
| Pathways To Learning Child Care Center | 3438 W 79th St, Chicago, IL 60652 | Center |
| Pathways To Learning Child Care Center | 3450 W 79th St # 54, Chicago, IL 60652 | Center |
| Pathways To Learning Child Care Center | 6535 S Kedzie Ave # 41, Chicago, IL 60629 | Center |
| Pathways To Learning II | 3416 1/2 3418 West 79th Str., Chicago, IL 60652 | Center |
| Paulo Freire Center | 1653 W 43rd St, Chicago, IL 60609 | Center |
| Peabody Elementary School Preschool | 1444 W Augusta Blvd, Chicago, IL 60642 | Preschool |
| Peace Infant and Toddler Center | 6242 N CLARK ST, Chicago, IL 60660 | Center |
| Peachtree Nursery and Learning Center | Po Box 23020, Chicago, IL 60623 | Center |
| Peck Elementary School Preschool | 3826 W 58th St, Chicago, IL 60629 | Preschool |
| Pedia Learning Center - Luv "N" Care | 5776 N Lincoln Ave # 78, Chicago, IL 60659 | Center |
| Pee Wee's Day Care & Pre-School | 30 N 5th Ave, Maywood, IL 60153 | Preschool |
| Pegasus Children's Center | 7321 N Kildare Ave, Lincolnwood, IL 60712 | Center |
| Peirce Elementary International Studies School Preschool | 1423 W Bryn Mawr Ave, Chicago, IL 60660 | Preschool |
| Penn Elementary School Preschool | 1616 S Avers Ave, Chicago, IL 60623 | Preschool |
| Pennoyer Elementary School Preschool | 5200 N Cumberland, Harwood Heights, IL 60706 | Preschool |
| Perez Elementary School Preschool | 1241 W 19th St, Chicago, IL 60608 | Preschool |
| Perfect Beginnings Child Development Center | 7815 S Kedzie Ave, Chicago, IL 60652 | Center |
| Pershing Elementary Humanities Magnet Preschool | 3113 S Rhodes Ave, Chicago, IL 60616 | Preschool |
| Peterson Elementary School Preschool | 5510 N Christiana Av, Chicago, IL 60625 | Preschool |
| Piccolo Elementary Specialty School Preschool | 1040 N Keeler Ave, Chicago, IL 60651 | Preschool |
| Pickard Elementary School Preschool | 2301 W 21st Pl, Chicago, IL 60608 | Preschool |
| Picket Fence Day Care & Learning Center | 36 W Conti Pkwy, Elmwood Park, IL 60707 | Center |
| Pilgrim Community Nursery School | 460 Lake St, Oak Park, IL 60302 | Center |
| Pilgrim Lutheran School Preschool | 4300 N Winchester Av, Chicago, IL 60613 | Preschool |
| Pilsen Elementary Community Academy Preschool | 1420 W 17th St, Chicago, IL 60608 | Preschool |
| Pink's Child Care Academy | 8236 S Kedzie Ave, Chicago, IL 60652 | Center |
| Pink's Child Care Academy II | 8000 S Kedzie Ave, Chicago, IL 60652 | Center |
| Pinocchio Child Care | 5932 W Gunnison St, Chicago, IL 60630 | Center |
| Pope John Paul II Catholic School Preschool | 4325 S Richmond St, Chicago, IL 60632 | Preschool |
| Portage Park Elementary School Preschool | 5330 W Berteau Ave, Chicago, IL 60641 | Preschool |
| Positive Attitudes Working Daycare Preschool | 112 Chicago Ave, Oak Park, IL 60302 | Center |
| Precious Heart Day Care Center | 2301 W Roosevelt Rd, Broadview, IL 60155 | Preschool |
| Precious Infants & Tots Learning Center | Po Box 378303, Chicago, IL 60637 | Center |
| Precious Little One's Learning Center | Po Box 378303, Chicago, IL 60637 | Center |
| Prescott Elementary School Preschool | 1632 W Wrightwood Av, Chicago, IL 60614 | Preschool |
| Prieto Math-Science Elementary School Preschool | 2231 N Central Ave, Chicago, IL 60639 | Preschool |
| Prince of Peace Child Development Center | 1210 N Waller Ave, Chicago, IL 60651 | Center |
| Pritzker Elementary School Preschool | 2009 W Schiller St, Chicago, IL 60622 | Preschool |
| Procare Early Headstart Center | 330 Eastern Ave, Bellwood, IL 60104 | Preschool |
| Project Lead | 1512 S Pulaski Rd, Chicago, IL 60623 | Center |
| Proviso Area Except Child Center | 1000 Van Buren St, Maywood, IL 60153 | Preschool |
| Prussing Elementary School Preschool | 4650 N Menard Ave, Chicago, IL 60630 | Preschool |
| Pui Tak Christian School | 2301 S Wentworth Ave, Chicago, IL 60616 | Preschool |
| Pui Tak Christian School Preschool | 2301 S Wentworth Ave, Chicago, IL 60616 | Preschool |
| Pulaski Elementary Fine Arts Academy Preschool | 2230 W Mclean Ave, Chicago, IL 60647 | Preschool |
| Queen of All Saints School Preschool | 6230 N Lemont Ave, Chicago, IL 60646 | Preschool |
| Queen of Angels School Preschool | 4520 N Western Ave, Chicago, IL 60625 | Preschool |
| Queen of The Universe Preschool | 7130 S Hamlin Ave, Chicago, IL 60629 | Preschool |
| RFCC at Oak Park River Forest High School | 201 N Scoville Ave, Oak Park, IL 60302 | Center |
| Rainbow Day Care | 3250 W Irving Park Rd, Chicago, IL 60618 | Center |
| Rainforest Learning Center | 1325 S State St, Chicago, IL 60605 | Preschool |
| Ram Little Lambs Learning Center | 3339 W Chicago Ave # 41, Chicago, IL 60651 | Center |
| Randolph Elementary School Preschool | 7316 S Hoyne Ave, Chicago, IL 60636 | Preschool |
| Rauner YMCA | 2700 S Western Ave, Chicago, IL 60608 | Preschool |
| Ravenswood Community Child Care Center | 4900 N Damen Ave, Chicago, IL 60625 | Preschool |
| Ravenswood Elementary School Preschool | 4332 N Paulina St, Chicago, IL 60613 | Preschool |
| Ravenswood Manor Child Care Center | 2756 W Montrose Ave # 58, Chicago, IL 60618 | Center |