This is a list of the most common names starting with the letter J, based on people currently estimated to be alive in the United States as of 2021.
| Name | People | % Male | Average Age |
|---|---|---|---|
| James | 3,105,340 | 99.5 | 52.0 |
| John | 2,910,970 | 99.6 | 52.4 |
| Joseph | 1,733,520 | 99.6 | 42.7 |
| Jennifer | 1,409,560 | 0.3 | 41.5 |
| Joshua | 1,190,240 | 99.6 | 28.2 |
| Jessica | 1,025,010 | 0.3 | 33.0 |
| Jason | 986,628 | 99.5 | 37.4 |
| Jacob | 909,505 | 99.8 | 22.0 |
| Jeffrey | 853,461 | 99.6 | 48.8 |
| Jonathan | 813,573 | 99.6 | 30.5 |
| Justin | 756,467 | 99.5 | 29.8 |
| Jose | 513,080 | 99.3 | 31.0 |
| Jordan | 508,115 | 74.1 | 22.0 |
| Julie | 463,031 | 0.3 | 50.1 |
| Jeremy | 423,026 | 99.5 | 34.3 |
| Jack | 406,701 | 99.7 | 34.9 |
| Jerry | 402,538 | 97.7 | 59.9 |
| Janet | 391,822 | 0.2 | 64.1 |
| Jacqueline | 348,984 | 0.3 | 47.5 |
| Jamie | 336,704 | 23.6 | 38.8 |
| Jesse | 334,783 | 96.8 | 35.5 |
| Juan | 319,582 | 99.3 | 30.4 |
| Judith | 318,342 | 0.2 | 68.2 |
| Julia | 313,524 | 0.3 | 35.6 |
| Joyce | 310,597 | 0.3 | 68.4 |
| Janice | 294,242 | 0.2 | 65.7 |
| Judy | 285,146 | 0.2 | 67.4 |
| Joan | 262,635 | 2.1 | 70.7 |
| Jackson | 258,653 | 99.7 | 12.6 |
| Jayden | 251,423 | 91.4 | 10.3 |
| Jasmine | 249,972 | 0.5 | 22.5 |
| Joel | 235,467 | 99.1 | 37.2 |
| Johnny | 228,140 | 98.9 | 51.3 |
| Jean | 220,698 | 7.3 | 66.7 |
| Jane | 219,125 | 0.2 | 60.6 |
| Joe | 216,993 | 97.5 | 58.1 |
| Julian | 213,864 | 98.7 | 17.6 |
| Jesus | 212,736 | 99.0 | 26.6 |
| Jeremiah | 201,658 | 99.7 | 19.6 |
| Jeffery | 201,230 | 99.4 | 49.3 |
| Jimmy | 199,612 | 99.3 | 54.5 |
| Jared | 196,284 | 99.6 | 29.0 |
| Jill | 188,219 | 0.2 | 52.6 |
| Joanne | 147,196 | 0.2 | 64.4 |
| Jenna | 144,545 | 0.2 | 24.7 |
| Jay | 144,128 | 98.8 | 48.9 |
| Jon | 137,202 | 99.2 | 50.1 |
| Jorge | 129,084 | 99.5 | 26.9 |
| Jo | 124,956 | 0.9 | 67.4 |
| Josiah | 124,246 | 99.7 | 11.3 |
| Jessie | 120,887 | 49.2 | 46.1 |
| Jackie | 120,055 | 40.2 | 58.2 |
| Josephine | 114,667 | 0.2 | 43.5 |
| Jaime | 113,318 | 57.4 | 35.0 |
| Jake | 112,979 | 99.8 | 21.7 |
| Joy | 108,749 | 1.0 | 49.6 |
| Joann | 107,051 | 0.3 | 64.7 |
| Jocelyn | 106,702 | 0.3 | 21.1 |
| Jerome | 98,663 | 99.3 | 53.5 |
| Javier | 98,104 | 99.5 | 26.0 |
| Jeanette | 97,714 | 0.3 | 58.7 |
| Jaxon | 97,605 | 99.6 | 7.1 |
| Joanna | 96,419 | 0.3 | 34.4 |
| Jade | 96,206 | 5.6 | 17.6 |
| Jeff | 95,257 | 99.8 | 55.9 |
| Juanita | 95,023 | 0.4 | 63.3 |
| Jeanne | 94,348 | 0.2 | 64.6 |
| Johnathan | 92,829 | 99.6 | 26.1 |
| Jaden | 90,414 | 85.2 | 14.0 |
| June | 83,787 | 1.4 | 58.6 |
| Jim | 83,758 | 99.6 | 62.7 |
| Jenny | 81,813 | 0.5 | 42.2 |
| Jillian | 81,189 | 0.3 | 25.8 |
| Jody | 78,476 | 35.4 | 50.9 |
| Jace | 78,435 | 99.0 | 10.0 |
| Jodi | 75,604 | 1.1 | 47.7 |
| Jonah | 72,383 | 99.1 | 14.4 |
| Jacquelyn | 69,606 | 0.1 | 48.0 |
| Jada | 65,889 | 0.4 | 17.9 |
| Johnnie | 65,200 | 68.4 | 61.4 |
| Jordyn | 62,861 | 8.7 | 13.6 |
| Jonathon | 62,431 | 99.6 | 31.0 |
| Jimmie | 61,191 | 85.7 | 63.0 |
| Jan | 60,647 | 26.3 | 60.0 |
| Juliana | 59,750 | 0.1 | 18.8 |
| Jaxson | 57,854 | 99.8 | 6.5 |
| Julio | 56,120 | 99.3 | 29.5 |
| Joey | 53,814 | 87.8 | 39.8 |
| Josue | 52,380 | 99.7 | 17.5 |
| Janelle | 52,141 | 0.2 | 33.8 |
| Jameson | 49,143 | 97.8 | 9.0 |
| Jaclyn | 47,927 | 0.2 | 33.3 |
| Julianna | 47,287 | 0.1 | 17.3 |
| Josie | 46,919 | 0.8 | 24.5 |
| Jude | 46,075 | 94.7 | 12.0 |
| Julius | 44,971 | 99.5 | 33.0 |
| Jasmin | 44,377 | 1.3 | 22.6 |
| Janie | 44,035 | 0.4 | 57.6 |
| Jayla | 42,940 | 0.1 | 12.5 |
| Jazmin | 42,435 | 0.5 | 19.0 |