| Seven Oaks Academy/bright Horizons | 0.0 |
Early childhood program/child care center | Pre-KG-KG | 30 | 2.6 | Nonsectarian |
| St John The Evangelist Catholic School | 0.6 |
Regular elementary or secondary | Pre-KG-8 | 245 | 10.7 | Roman Catholic |
| Immanuel Lutheran School | 0.7 |
Regular elementary or secondary | Pre-KG-8 | 217 | 15.7 | Lutheran Church - Missouri Synod |
| Children's Workshop | 3.1 |
Early childhood program/child care center | Pre-KG-KG | 15 | 3.8 | Nonsectarian |
| Hms Richards Adventist School | 4.0 |
Regular elementary or secondary | Pre-KG-8 | 35 | 8.8 | Seventh-Day Adventist |
| 5th Street College Of Berthoud | 7.1 |
Regular elementary or secondary | Pre-KG-1 | 10 | 6.2 | Nonsectarian |
| Discovery Montessori L'ecole Sans Murs | 7.1 |
Montessori | Pre-KG-6 | 14 | 10.0 | Nonsectarian |
| Kindercare Learning Center #1650 | 8.9 |
Regular elementary or secondary | Pre-KG-5 | 92 | 92.0 | Nonsectarian |
| Bright Horizons Family Solutions | 9.3 |
Early childhood program/child care center | Pre-KG-KG | 20 | 8.0 | Nonsectarian |
| Kindercare Learning Center | 10.0 |
Early childhood program/child care center | Pre-KG-KG | 11 | 11.0 | Nonsectarian |
| Spring Creek School | 11.1 |
Early childhood program/child care center | Pre-KG-KG | 11 | 11.0 | Nonsectarian |
| Beebe Christian School | 11.5 |
Regular elementary or secondary | KG-8 | 17 | 10.6 | Seventh-Day Adventist |
| Rivendell Schoo Of Northern Colorado | 11.9 |
Montessori | Pre-KG-6 | 151 | 11.8 | Nonsectarian |
| Hearts In Hand Child Development Center | 12.0 |
Early childhood program/child care center | Pre-KG-Trans. KG | 15 | 6.5 | Nonsectarian |
| Oakwood School | 12.7 |
Regular elementary or secondary | Pre-KG-6 | 49 | 9.1 | Nonsectarian |
| Children's House Montessori School | 12.8 |
Montessori | Pre-KG-Trans. KG | 15 | 3.8 | Nonsectarian |
| Our Saviors Lutheran School | 14.8 |
Regular elementary or secondary | KG-8 | 15 | 5.0 | Wisconsin Evangelical Lutheran Synod |
| Lyons Community Montessori | 14.9 |
Montessori | Pre-KG-KG | 10 | 4.3 | Nonsectarian |
| Scribbles Academy | 15.1 |
Early childhood program/child care center | Pre-KG-KG | 8 | 8.0 | Nonsectarian |
| Aspen Christian School | 15.1 |
Regular elementary or secondary | 1-7 | 11 | 7.3 | Seventh-Day Adventist |
| Messiah Lutheran School | 15.3 |
Regular elementary or secondary | Pre-KG-6 | 59 | 6.2 | Lutheran Church - Missouri Synod |
| Gateway Montessori School | 15.9 |
Montessori | Pre-KG-KG | 16 | 8.9 | Nonsectarian |
| Bright Horizons East Longmont | 16.0 |
Early childhood program/child care center | Pre-KG-KG | 19 | 19.0 | Nonsectarian |
| Mountain View Academy | 17.4 |
Regular elementary or secondary | Pre-KG-8 | 60 | 5.7 | Nonsectarian |
| Bright Horizons - West Longmont | 17.5 |
Early childhood program/child care center | Pre-KG-KG | 18 | 16.4 | Nonsectarian |
| Mountain Peak Private School | 17.8 |
Regular elementary or secondary | Pre-KG-5 | 46 | 7.7 | Nonsectarian |
| St Stephen's Christian School | 18.0 |
Early childhood program/child care center | Pre-KG-Trans. KG | 35 | 6.0 | Episcopal |
| Shepherd Of The Hills Lutheran School | 19.2 |
Regular elementary or secondary | Pre-KG-5 | 22 | 7.6 | Wisconsin Evangelical Lutheran Synod |
| Trinity Lutheran School | 19.8 |
Regular elementary or secondary | KG-8 | 60 | 10.7 | Lutheran Church - Missouri Synod |
| Adventist Christian School | 20.9 |
Regular elementary or secondary | KG-8 | 37 | 9.7 | Seventh-Day Adventist |
| Rocky Mountain Christian Academy | 20.9 |
Regular elementary or secondary | Pre-KG-8 | 321 | 14.7 | Christian (no specific denomination) |
| Shepherd Valley Waldorf School | 22.0 |
Special program emphasis | Pre-KG-8 | 107 | 6.6 | Nonsectarian |
| Boulder Jewish Day School | 23.2 |
Regular elementary or secondary | Pre-KG-5 | 33 | 9.2 | Jewish |
| Rocky Mountain School For The Gifted & Creative | 23.2 |
Special program emphasis | Pre-KG-8 | 73 | 5.2 | Nonsectarian |
| Boulder Country Day | 24.1 |
Regular elementary or secondary | Pre-KG-8 | 252 | 9.0 | Nonsectarian |
