Ranking · all 51
Strictest Car Seat Laws by State
Verified · JUN 2026We scored all 50 states, DC, and the US territories on how far their child-restraint requirements reach, combining rear-facing age, booster age and height, and the back-seat requirement into one relative index. A higher score means the law keeps children in each restraint stage longer.
| # | State | Strictness index |
|---|---|---|
| 1 | Maine ME | 88 / 100 rear-facing to 2, booster to 8 |
| 2 | California CA | 81 / 100 rear-facing to 2, booster to 8 |
| 2 | New Jersey NJ | 81 / 100 rear-facing to 2, booster to 8 |
| 2 | Rhode Island RI | 81 / 100 rear-facing to 2, booster to 8 |
| 2 | South Carolina SC | 81 / 100 rear-facing to 2, booster to 8 |
| 6 | U.S. Virgin Islands VI | 79 / 100 rear-facing to 1, booster to 8 |
| 7 | Michigan MI | 74 / 100 rear-facing to 2, booster to 8 |
| 8 | Washington WA | 73 / 100 rear-facing to 2, booster to 4'9" |
| 9 | Tennessee TN | 72 / 100 rear-facing to 1, booster to 9 |
| 10 | Louisiana LA | 67 / 100 rear-facing to 2, booster to 9 |
| 10 | Maryland MD | 67 / 100 rear-facing to 2, booster to 8 |
| 10 | Minnesota MN | 67 / 100 rear-facing to 2, booster to 9 |
| 10 | New York NY | 67 / 100 rear-facing to 2, booster to 8 |
| 10 | Oklahoma OK | 67 / 100 rear-facing to 2, booster to 8 |
| 10 | Oregon OR | 67 / 100 rear-facing to 2, booster to 8 |
| 10 | Puerto Rico PR | 67 / 100 booster to 10 |
| 17 | Nevada NV | 66 / 100 rear-facing to 2, booster to 6 |
| 18 | Vermont VT | 65 / 100 rear-facing to 2, booster to 8 |
| 19 | Colorado CO | 60 / 100 rear-facing to 2, booster to 9 |
| 20 | Georgia GA | 56 / 100 booster to 8 |
| 20 | Nebraska NE | 56 / 100 rear-facing to 2, booster to 8 |
| 20 | Virginia VA | 56 / 100 rear-facing to 2, booster to 8 |
| 23 | Alaska AK | 54 / 100 rear-facing to 1, booster to 8 |
| 23 | Wisconsin WI | 54 / 100 rear-facing to 1, booster to 8 |
| 25 | Delaware DE | 50 / 100 rear-facing to 2, booster to 4'9" |
| 25 | Guam GU | 50 / 100 booster to 12 |
| 27 | Hawaii HI | 46 / 100 rear-facing to 2, booster to 10 |
| 28 | Montana MT | 44 / 100 rear-facing to 2, booster to 9 |
| 29 | Arizona AZ | 42 / 100 booster to 8 |
| 29 | Connecticut CT | 42 / 100 rear-facing to 2, booster to 8 |
| 29 | District of Columbia DC | 42 / 100 rear-facing to 2, booster to 8 |
| 29 | Illinois IL | 42 / 100 rear-facing to 2, booster to 8 |
| 29 | Kansas KS | 42 / 100 booster to 8 |
| 29 | Kentucky KY | 42 / 100 booster to 8 |
| 29 | Massachusetts MA | 42 / 100 booster to 8 |
| 29 | Missouri MO | 42 / 100 booster to 8 |
| 29 | North Dakota ND | 42 / 100 booster to 8 |
| 29 | Ohio OH | 42 / 100 booster to 8 |
| 29 | Pennsylvania PA | 42 / 100 rear-facing to 2, booster to 8 |
| 29 | Texas TX | 42 / 100 booster to 8 |
| 29 | Utah UT | 42 / 100 booster to 8 |
| 29 | West Virginia WV | 42 / 100 booster to 8 |
| 43 | Mississippi MS | 40 / 100 booster to 7 |
| 43 | New Hampshire NH | 40 / 100 booster to 7 |
| 45 | Wyoming WY | 35 / 100 booster to 9 |
| 46 | New Mexico NM | 29 / 100 rear-facing to 1, booster to 7 |
| 47 | North Carolina NC | 26 / 100 booster to 8 |
| 48 | Alabama AL | 25 / 100 rear-facing to 1, booster to 6 |
| 48 | Iowa IA | 25 / 100 rear-facing to 1, booster to 6 |
| 50 | Northern Mariana Islands MP | 24 / 100 booster to 4'6" |
| 51 | Indiana IN | 17 / 100 booster to 8 |
| 52 | Idaho ID | 15 / 100 booster to 7 |
| 53 | Arkansas AR | 13 / 100 booster to 6 |
| 53 | Florida FL | 13 / 100 booster to 6 |
| 55 | South Dakota SD | 10 / 100 booster to 5 |
| 56 | American Samoa AS | 0 / 100 |
How we ranked this
Each of four dimensions (rear-facing age, booster age, booster height, back-seat age) is normalised to a 0-1 scale across all states, then averaged and scaled to 0-100. A dimension a state does not regulate counts as 0 on that axis. This is a relative index for comparison only, not a legal standard. Always follow your own state law and your car seat manufacturer instructions.
Frequently asked questions
Which state has the strictest car seat law?
By our composite index, the top-ranked state combines the longest rear-facing and booster requirements with a back-seat rule. See the ranked table above for the current order, which updates whenever the underlying statute data is refreshed.
How is the strictness score calculated?
We normalise four restraint dimensions (rear-facing age, booster age, booster height, and back-seat age) to a 0-1 scale across all states, average them, and scale to 0-100. It is a relative index for orientation, not a legal threshold.
Does a stricter law mean my child is safer?
The law is a minimum. Pediatric guidance from the AAP often recommends keeping a child in each stage longer than the law requires. Follow whichever is more protective, along with your car seat manufacturer height and weight limits.