| Running River School | 4.3 |
Special program emphasis | KG-6 | 22 | 5.1 | Nonsectarian |
| Running River School | 4.3 |
Regular elementary or secondary | KG-6 | 26 | 5.8 | Nonsectarian |
| Bright Horizons - Louisville | 5.6 |
Early childhood program/child care center | Pre-KG-KG | 25 | 9.6 | Nonsectarian |
| Rocky Mountain Christian Academy | 5.8 |
Regular elementary or secondary | Pre-KG-8 | 321 | 14.7 | Christian (no specific denomination) |
| St Louis Catholic School | 6.1 |
Regular elementary or secondary | Pre-KG-8 | 211 | 15.6 | Roman Catholic |
| Fairview Montessori School | 6.2 |
Montessori | Pre-KG-KG | 5 | 5.0 | Nonsectarian |
| Louisville Montessori School & Daycare Center | 6.9 |
Montessori | Pre-KG-Trans. KG | 18 | 6.0 | Nonsectarian |
| Boulder Jewish Day School | 7.0 |
Regular elementary or secondary | Pre-KG-5 | 33 | 9.2 | Jewish |
| St Stephen's Christian School | 7.4 |
Early childhood program/child care center | Pre-KG-Trans. KG | 35 | 6.0 | Episcopal |
| Shepherd Valley Waldorf School | 7.5 |
Special program emphasis | Pre-KG-8 | 107 | 6.6 | Nonsectarian |
| Kindercare Learning Center | 7.7 |
Early childhood program/child care center | Pre-KG-Trans. KG | 18 | 18.0 | Nonsectarian |
| Mountain Peak Private School | 7.9 |
Regular elementary or secondary | Pre-KG-5 | 46 | 7.7 | Nonsectarian |
| Boulder Country Day | 7.9 |
Regular elementary or secondary | Pre-KG-8 | 252 | 9.0 | Nonsectarian |
| Mountain Shadows Montessori School | 8.0 |
Montessori | Pre-KG-6 | 87 | 14.5 | Nonsectarian |
| Rocky Mountain School For The Gifted & Creative | 8.1 |
Special program emphasis | Pre-KG-8 | 73 | 5.2 | Nonsectarian |
| Nativity Of Our Lord School | 8.4 |
Regular elementary or secondary | KG-8 | 485 | 20.2 | Roman Catholic |
| Bright Horizons - West Longmont | 8.6 |
Early childhood program/child care center | Pre-KG-KG | 18 | 16.4 | Nonsectarian |
| Beautiful Savior Lutheran School | 9.0 |
Regular elementary or secondary | Pre-KG-8 | 51 | 9.1 | Lutheran Church - Missouri Synod |
| Broomfield Academy | 9.0 |
Special program emphasis | Pre-KG-5 | 45 | 4.1 | Nonsectarian |
| Bright Horizons East Longmont | 9.1 |
Early childhood program/child care center | Pre-KG-KG | 19 | 19.0 | Nonsectarian |
| Friends' School | 9.4 |
Regular elementary or secondary | Pre-KG-5 | 113 | 11.8 | Nonsectarian |
| Countryside Montessori School | 9.4 |
Montessori | Pre-KG-KG | 8 | 1.4 | Nonsectarian |
| Eastlake Montessori School | 9.6 |
Montessori | Pre-KG-KG | 7 | 2.0 | Nonsectarian |
| Gateway Montessori School | 9.7 |
Montessori | Pre-KG-KG | 16 | 8.9 | Nonsectarian |
| The Academy Child Development Center-westminster | 9.8 |
Early childhood program/child care center | Pre-KG-KG | 23 | 8.2 | Nonsectarian |
| Seven Oaks Academy At The Ranch Reserve | 9.9 |
Early childhood program/child care center | Pre-KG-KG | 7 | 7.0 | Nonsectarian |
| Aspen Christian School | 10.1 |
Regular elementary or secondary | 1-7 | 11 | 7.3 | Seventh-Day Adventist |
| Kindercare Learning Center | 10.1 |
Alternative/other | Pre-KG-3 | 15 | 10.7 | Nonsectarian |
| Scribbles Academy | 10.1 |
Early childhood program/child care center | Pre-KG-KG | 8 | 8.0 | Nonsectarian |
| Messiah Lutheran School | 10.1 |
Regular elementary or secondary | Pre-KG-6 | 59 | 6.2 | Lutheran Church - Missouri Synod |
| Kindercare Learning Center | 10.2 |
Early childhood program/child care center | Pre-KG-KG | 9 | 9.0 | Nonsectarian |
| Lord Of Life Lutheran School | 10.4 |
Regular elementary or secondary | Pre-KG-8 | 56 | 12.2 | Wisconsin Evangelical Lutheran Synod |
| Bixby School | 10.4 |
Regular elementary or secondary | Pre-KG-5 | 112 | 7.0 | Nonsectarian |
| Our Saviors Lutheran School | 10.5 |
Regular elementary or secondary | KG-8 | 15 | 5.0 | Wisconsin Evangelical Lutheran Synod |
| Step By Step Child Development Center | 11.1 |
Early childhood program/child care center | Pre-KG-KG | 6 | 6.0 | Nonsectarian |
| Gethsemane Lutheran School | 11.4 |
Regular elementary or secondary | Pre-KG-8 | 100 | 12.5 | Lutheran Church - Missouri Synod |
| Mt Zion Lutheran School | 11.7 |
Regular elementary or secondary | Pre-KG-5 | 24 | 7.7 | Lutheran Church - Missouri Synod |
| Sacred Heart Of Jesus | 12.0 |
Regular elementary or secondary | Pre-KG-8 | 325 | 12.8 | Roman Catholic |
| Blue Sky Kindergarten | 12.1 |
Early childhood program/child care center | Pre-KG-KG | 3 | 1.6 | Nonsectarian |
| Jarrow Montessori School | 12.1 |
Montessori | Pre-KG-6 | 51 | 8.5 | Nonsectarian |
| Shepherd Of The Valley Lutheran School | 13.1 |
Regular elementary or secondary | Pre-KG-8 | 58 | 14.5 | Wisconsin Evangelical Lutheran Synod |
| Brighton Montessori School | 13.2 |
Montessori | Pre-KG-Trans. KG | 6 | 1.7 | Nonsectarian |
| A Child's Touch | 13.5 |
Early childhood program/child care center | Pre-KG-KG | 44 | 12.9 | Christian (no specific denomination) |
| Zion Lutheran School | 13.9 |
Regular elementary or secondary | Pre-KG-8 | 255 | 18.4 | Lutheran Church - Missouri Synod |
| Childrens Outreach Project | 14.1 |
Early childhood program/child care center | Pre-KG-Trans. KG | 14 | 4.2 | Nonsectarian |
| Holy Trinity Catholic School | 14.5 |
Regular elementary or secondary | Pre-KG-8 | 242 | 14.7 | Roman Catholic |
| Assumption Catholic School | 15.1 |
Regular elementary or secondary | Pre-KG-8 | 132 | 10.9 | Roman Catholic |
| Shrine Of St Anne School | 16.8 |
Regular elementary or secondary | KG-8 | 394 | 19.4 | Roman Catholic |
| A Childs Reflection Day Care | 16.8 |
Early childhood program/child care center | Pre-KG-KG | 3 | 1.0 | Christian (no specific denomination) |
| Lyons Community Montessori | 16.9 |
Montessori | Pre-KG-KG | 10 | 4.3 | Nonsectarian |
| St Joan Of Arc Early Learning Center | 17.3 |
Early childhood program/child care center | Pre-KG-Trans. KG | 72 | 45.0 | Roman Catholic |
| Primrose School Of West Woods | 17.3 |
Early childhood program/child care center | Pre-KG-KG | 24 | 24.0 | Nonsectarian |
| Guardian Angels | 17.6 |
Regular elementary or secondary | Pre-KG-8 | 147 | 11.8 | Roman Catholic |
| 5th Street College Of Berthoud | 18.1 |
Regular elementary or secondary | Pre-KG-1 | 10 | 6.2 | Nonsectarian |
| St Catherine Of Siena Catholic School | 18.7 |
Regular elementary or secondary | Pre-KG-8 | 139 | 12.6 | Roman Catholic |
| Sts Peter & Paul | 18.8 |
Regular elementary or secondary | Pre-KG-8 | 327 | 13.9 | Roman Catholic |
| Cornerstone Montessori School | 18.9 |
Montessori | Pre-KG-KG | 21 | 1.5 | Nonsectarian |
| Emmaus Lutheran School | 19.6 |
Regular elementary or secondary | Pre-KG-8 | 35 | 5.1 | Lutheran Church - Missouri Synod |
| Annunciation | 19.7 |
Regular elementary or secondary | KG-8 | 200 | 14.5 | Roman Catholic |
| Inner City Christian School | 19.8 |
Regular elementary or secondary | Pre-KG-5 | 71 | 17.8 | Christian (no specific denomination) |
| Montessori Academy Of Colorado | 20.2 |
Montessori | Pre-KG-KG | 6 | 6.0 | Nonsectarian |
| Watch-care Academy | 20.3 |
Regular elementary or secondary | Pre-KG-8 | 44 | 14.7 | Nonsectarian |
| Garfield Montessori School | 20.3 |
Montessori | Pre-KG-KG | 4 | 4.0 | Nonsectarian |
| Bethlehem Lutheran School | 20.4 |
Regular elementary or secondary | Pre-KG-8 | 278 | 17.6 | Lutheran Church - Missouri Synod |
| Institute Of Global Scholarship | 20.5 |
Regular elementary or secondary | Pre-KG-5 | 25 | 8.3 | Nonsectarian |
| Excel Institute | 20.5 |
Regular elementary or secondary | KG-8 | 75 | 7.9 | Baptist |
| Our Lady Of Fatima Catholic School | 20.7 |
Regular elementary or secondary | Pre-KG-8 | 274 | 12.9 | Roman Catholic |
| Loyola Grade School | 20.8 |
Regular elementary or secondary | KG-6 | 105 | 9.3 | Roman Catholic |
| St Andrew Lutheran School | 20.9 |
Regular elementary or secondary | Pre-KG-4 | 28 | 9.3 | Lutheran Church - Missouri Synod |
| Ricks Center For Gifted Children | 21.1 |
Special program emphasis | Pre-KG-8 | 195 | 5.8 | Nonsectarian |
| Colorado Early Learning Center | 21.1 |
Early childhood program/child care center | Pre-KG-Trans. KG | 14 | 1.5 | Nonsectarian |
| Lakewood United Methodist Preschool | 21.2 |
Early childhood program/child care center | Pre-KG-Trans. KG | 16 | 5.3 | Methodist |
| Hms Richards Adventist School | 21.2 |
Regular elementary or secondary | Pre-KG-8 | 35 | 8.8 | Seventh-Day Adventist |
| St Bernadette School | 21.4 |
Regular elementary or secondary | Pre-KG-8 | 137 | 10.2 | Roman Catholic |
| Kindercare Learning Centers | 21.4 |
Early childhood program/child care center | Pre-KG-Trans. KG | 15 | 15.0 | Nonsectarian |
| Montview Community Preschool & Kindergarten | 21.5 |
Early childhood program/child care center | Pre-KG-KG | 23 | 23.0 | Nonsectarian |
| Blessed Sacrament Parish School | 21.5 |
Regular elementary or secondary | Pre-KG-8 | 184 | 11.7 | Roman Catholic |
| Denver International School | 21.6 |
Special program emphasis | Pre-KG-5 | 122 | 8.4 | Nonsectarian |
| Montessori School Of Golden Inc | 21.7 |
Montessori | Pre-KG-4 | 31 | 10.3 | Nonsectarian |
| Presentation Of Our Lady School | 21.9 |
Regular elementary or secondary | Pre-KG-8 | 126 | 10.0 | Roman Catholic |
| Montessori Children's House Of Denver | 21.9 |
Montessori | Pre-KG-2 | 154 | 10.0 | Nonsectarian |
| Montclair Academy | 22.3 |
Regular elementary or secondary | Pre-KG-8 | 95 | 6.6 | Nonsectarian |
| Montessori School Of Lake Wood | 22.4 |
Montessori | Pre-KG-5 | 26 | 6.7 | Nonsectarian |
| Good Shepherd Catholic School | 22.6 |
Regular elementary or secondary | Pre-KG-8 | 338 | 12.2 | Roman Catholic |
| St James Elementary School | 22.6 |
Regular elementary or secondary | Pre-KG-8 | 149 | 8.8 | Roman Catholic |
| Christ The King Roman Catholic School | 22.6 |
Regular elementary or secondary | Pre-KG-8 | 210 | 13.3 | Roman Catholic |
| Redeemer Lutheran School | 23.1 |
Regular elementary or secondary | 1-8 | 62 | 12.7 | Lutheran Church - Missouri Synod |
| St Francis De Sales Grade School | 23.2 |
Regular elementary or secondary | Pre-KG-8 | 209 | 16.2 | Roman Catholic |
| St Rose Of Lima School | 23.2 |
Regular elementary or secondary | KG-8 | 201 | 22.3 | Roman Catholic |
| The Montessori School Of Washington Park | 23.3 |
Montessori | Pre-KG-KG | 7 | 3.5 | Nonsectarian |
| Front Range Waldorf School | 23.3 |
Special program emphasis | Pre-KG-6 | 33 | 4.8 | Nonsectarian |
| Golden Independent School | 23.4 |
Alternative/other | Pre-KG-6 | 20 | 6.7 | Nonsectarian |
| Temple Emanuel Preschool And Kindergarten | 23.6 |
Early childhood program/child care center | Pre-KG-KG | 17 | 17.0 | Jewish |
| Stanley British Primary School | 23.6 |
Regular elementary or secondary | KG-8 | 385 | 10.6 | Christian (no specific denomination) |
| St Therese Catholic School | 23.7 |
Regular elementary or secondary | Pre-KG-8 | 172 | 11.1 | Roman Catholic |
| St John's Lutheran School | 23.9 |
Regular elementary or secondary | Pre-KG-8 | 179 | 15.6 | Lutheran Church - Missouri Synod |
| Kindercare Center | 24.0 |
Early childhood program/child care center | Pre-KG-KG | 15 | 5.0 | Nonsectarian |
| Hillel Academy | 24.2 |
Regular elementary or secondary | Pre-KG-8 | 188 | 9.1 | Jewish |
| St Pius X Catholic School | 24.3 |
Regular elementary or secondary | Pre-KG-8 | 316 | 13.6 | Roman Catholic |
| Denver Child Care Center | 24.5 |
Early childhood program/child care center | Pre-KG-KG | 34 | 8.5 | Nonsectarian |
| St Mark's Preschool And Kindergarten | 24.5 |
Early childhood program/child care center | Pre-KG-KG | 8 | 8.0 | Evangelical Lutheran Church in America |
| St Vincent De Paul School | 24.6 |
Regular elementary or secondary | Pre-KG-8 | 498 | 17.5 | Roman Catholic |
| Concordia Lutheran Preschool | 24.8 |
Early childhood program/child care center | Pre-KG-Trans. KG | 18 | 3.3 | Christian (no specific denomination) |
