| Rank | Average Family Size ▼ | School District / Population |
| 1. | 3.48 | Darien School District / 20,732 |
| 2. | 3.35 | Bridgeport School District / 144,229 |
| 3. | 3.31 | Wilton School District / 18,062 |
| 4. | 3.30 | Hartford School District / 124,775 |
| 4. | 3.30 | Weston School District / 10,179 |
| 6. | 3.28 | New Canaan School District / 19,738 |
| 7. | 3.27 | Monroe School District / 19,479 |
| 8. | 3.25 | Easton School District / 7,490 |
| 8. | 3.25 | New Fairfield School District / 13,881 |
| 10. | 3.24 | Ridgefield School District / 24,638 |
| 11. | 3.23 | Newtown School District / 27,560 |
| 12. | 3.21 | New Haven School District / 129,779 |
| 12. | 3.21 | Trumbull School District / 36,018 |
| 14. | 3.20 | Westport School District / 26,391 |
| 15. | 3.19 | Danbury School District / 80,893 |
| 15. | 3.19 | Fairfield School District / 59,404 |
| 17. | 3.18 | Waterbury School District / 110,366 |
| 17. | 3.18 | Greenwich School District / 61,171 |
| 19. | 3.17 | Wolcott School District / 16,680 |
| 20. | 3.16 | Norwalk School District / 85,603 |
| 20. | 3.16 | Regional High School District 09 / 16,648 |
| 20. | 3.16 | Hebron School District / 9,686 |
| 20. | 3.16 | Tolland School District / 15,052 |
| 24. | 3.15 | Bethel School District / 18,584 |
| 24. | 3.15 | Stamford School District / 122,643 |
| 26. | 3.14 | Brookfield School District / 16,452 |
| 26. | 3.14 | Bethany School District / 5,563 |
| 28. | 3.13 | Sterling School District / 3,830 |
| 28. | 3.13 | New Milford School District / 28,142 |
| 28. | 3.13 | New Britain School District / 73,206 |
| 31. | 3.12 | Oxford School District / 12,683 |
| 31. | 3.12 | West Haven School District / 55,564 |
| 31. | 3.12 | Cheshire School District / 29,261 |
| 31. | 3.12 | Regional School District 16 / 15,454 |
| 31. | 3.12 | Regional High School District 08 / 19,393 |
| 36. | 3.11 | Colchester School District / 16,068 |
| 36. | 3.11 | Regional High School District 05 / 28,509 |
| 36. | 3.11 | Ansonia School District / 19,249 |
| 36. | 3.11 | Stratford School District / 51,384 |
| 40. | 3.10 | Woodbridge School District / 8,990 |
| 40. | 3.10 | Glastonbury School District / 34,427 |
| 40. | 3.10 | North Branford School District / 14,407 |
| 40. | 3.10 | Orange School District / 13,956 |
| 40. | 3.10 | Meriden School District / 60,868 |
| 45. | 3.09 | Salem School District / 4,151 |
| 45. | 3.09 | Simsbury School District / 23,511 |
| 45. | 3.09 | North Haven School District / 24,093 |
| 45. | 3.09 | Marlborough School District / 6,404 |
| 45. | 3.09 | East Hartford School District / 51,252 |
| 45. | 3.09 | New London School District / 27,620 |
| 45. | 3.09 | Regional School District 13 / 11,813 |
| 45. | 3.09 | South Windsor School District / 25,709 |
| 45. | 3.09 | East Haven School District / 29,257 |
| 54. | 3.08 | Naugatuck School District / 31,862 |
| 54. | 3.08 | Somers School District / 11,444 |
| 54. | 3.08 | Sprague School District / 2,984 |
| 57. | 3.07 | Madison School District / 18,269 |
| 57. | 3.07 | Windham School District / 25,268 |
| 57. | 3.07 | Redding School District / 9,158 |
| 57. | 3.07 | Ellington School District / 15,602 |
| 57. | 3.07 | Avon School District / 18,098 |
| 62. | 3.06 | Watertown School District / 22,514 |
| 62. | 3.06 | Lebanon School District / 7,308 |
| 62. | 3.06 | Andover School District / 3,303 |
| 62. | 3.06 | West Hartford School District / 63,268 |
| 62. | 3.06 | Regional School District 10 / 14,943 |
| 67. | 3.05 | Ledyard School District / 15,051 |
| 67. | 3.05 | Suffield School District / 15,735 |
| 67. | 3.05 | Plainfield School District / 15,405 |
| 67. | 3.05 | Pomfret School District / 4,247 |
| 67. | 3.05 | Shelton School District / 39,559 |
| 72. | 3.04 | Windsor School District / 29,044 |
| 72. | 3.04 | Bozrah School District / 2,627 |
| 72. | 3.04 | Thomaston School District / 7,887 |
| 72. | 3.04 | Seymour School District / 16,540 |
| 72. | 3.04 | Granby School District / 11,282 |
| 72. | 3.04 | Wallingford School District / 45,135 |
| 78. | 3.03 | Berlin School District / 19,866 |
| 78. | 3.03 | Scotland School District / 1,726 |
| 80. | 3.02 | Norwich School District / 40,493 |
| 80. | 3.02 | Canterbury School District / 5,132 |
| 82. | 3.01 | Plymouth School District / 12,243 |
| 82. | 3.01 | Milford School District / 52,759 |
| 82. | 3.01 | Regional School District 15 / 27,479 |
| 82. | 3.01 | New Hartford School District / 6,970 |
| 82. | 3.01 | Montville School District / 19,571 |
| 82. | 3.01 | Coventry School District / 12,435 |
| 82. | 3.01 | Southington School District / 43,069 |
| 82. | 3.01 | Canton School District / 10,292 |
| 82. | 3.01 | Lisbon School District / 4,338 |
| 82. | 3.01 | Derby School District / 12,902 |
| 82. | 3.01 | Brooklyn School District / 8,210 |
| 82. | 3.01 | Hamden School District / 60,960 |
| 94. | 3.00 | Griswold School District / 11,951 |
| 94. | 3.00 | Farmington School District / 25,340 |
| 94. | 3.00 | Bolton School District / 4,980 |
| 94. | 3.00 | Barkhamsted School District / 3,799 |
| 94. | 3.00 | Sherman School District / 3,581 |
| 94. | 3.00 | Guilford School District / 22,375 |
| 94. | 3.00 | East Hampton School District / 12,959 |
| 101. | 2.99 | Clinton School District / 13,260 |
| 101. | 2.99 | East Granby School District / 5,148 |
| 103. | 2.98 | Killingly School District / 17,370 |
| 103. | 2.98 | Thompson School District / 9,458 |
| 103. | 2.98 | Regional School District 17 / 14,871 |
| 103. | 2.98 | Wethersfield School District / 26,668 |
| 103. | 2.98 | Chaplin School District / 2,305 |
| 103. | 2.98 | Ashford School District / 4,317 |
| 103. | 2.98 | Enfield School District / 44,654 |
| 110. | 2.97 | Hartland School District / 2,114 |
| 110. | 2.97 | East Haddam School District / 9,126 |
| 110. | 2.97 | Regional High School District 07 / 13,963 |
| 110. | 2.97 | Newington School District / 30,562 |
| 110. | 2.97 | Cromwell School District / 14,005 |
| 110. | 2.97 | Regional High School District 11 / 5,894 |
| 110. | 2.97 | Voluntown School District / 2,603 |
| 110. | 2.97 | Plainville School District / 17,716 |
| 118. | 2.96 | Franklin School District / 1,922 |
| 118. | 2.96 | Windsor Locks School District / 12,498 |
| 120. | 2.95 | Stafford School District / 12,087 |
| 120. | 2.95 | Bristol School District / 60,477 |
| 120. | 2.95 | Rocky Hill School District / 19,709 |
| 123. | 2.94 | Bloomfield School District / 20,486 |
| 123. | 2.94 | Portland School District / 9,508 |
| 123. | 2.94 | Groton School District / 40,115 |
| 123. | 2.94 | Regional School District 14 / 13,582 |
| 123. | 2.94 | Torrington School District / 36,383 |
| 123. | 2.94 | Manchester School District / 58,241 |
| 129. | 2.93 | Litchfield School District / 8,466 |
| 129. | 2.93 | Regional High School District 19 / 36,901 |
| 129. | 2.93 | Woodstock School District / 7,964 |
| 132. | 2.92 | Eastford School District / 1,749 |
| 132. | 2.92 | Willington School District / 6,041 |
| 132. | 2.92 | North Stonington School District / 5,297 |
| 135. | 2.91 | Preston School District / 4,726 |
| 135. | 2.91 | Deep River School District / 4,629 |
| 135. | 2.91 | Mansfield School District / 26,543 |
| 135. | 2.91 | Waterford School District / 19,517 |
| 135. | 2.91 | Union School District / 854 |
| 135. | 2.91 | Columbia School District / 5,485 |
| 135. | 2.91 | Middletown School District / 47,648 |
| 135. | 2.91 | Regional School District 06 / 6,825 |
| 143. | 2.90 | Hampton School District / 1,863 |
| 143. | 2.90 | Westbrook School District / 6,938 |
| 145. | 2.89 | Putnam School District / 9,584 |
| 145. | 2.89 | Winchester School District / 11,242 |
| 147. | 2.88 | East Lyme School District / 19,159 |
| 148. | 2.87 | Vernon School District / 29,179 |
| 148. | 2.87 | Chester School District / 3,994 |
| 148. | 2.87 | North Canaan School District / 3,315 |
| 148. | 2.87 | Colebrook School District / 1,485 |
| 152. | 2.86 | East Windsor School District / 11,162 |
| 152. | 2.86 | Regional High School District 04 / 15,306 |
| 154. | 2.85 | Norfolk School District / 1,709 |
| 154. | 2.85 | Regional School District 18 / 10,009 |
| 156. | 2.84 | Stonington School District / 18,545 |
| 156. | 2.84 | Old Saybrook School District / 10,242 |
| 156. | 2.84 | Branford School District / 28,026 |
| 159. | 2.83 | Kent School District / 2,979 |
| 159. | 2.83 | Essex School District / 6,683 |
| 161. | 2.81 | Cornwall School District / 1,420 |
| 161. | 2.81 | Regional School District 12 / 7,567 |
| 163. | 2.78 | Canaan School District / 1,234 |
| 164. | 2.77 | Regional High School District 01 / 15,471 |
| 165. | 2.69 | Sharon School District / 2,782 |
| 166. | 2.67 | Salisbury School District / 3,741 |
Please note that we only rank locations with 'Average Family Size' data. The rank above might not be a complete list. Locations without 'Average Family Size' data are not listed.
