Last Updated: Aug-2025
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Census List

This chart shows the number of ARRT credentials held by Registered Technologists (R.T.s) in each state and region. If viewing on desktop, hover over the headers in each column to see full credential name (or view legend at bottom of page). The "Techs" column shows the total number of R.T.s who hold ARRT credentials and the "Certs" column shows the total number of credentials held by those R.T.s.

State/Country RAD NMT THR MRI SON MAM CT QM BD CI VI CV VS BS RA Certs Techs
Alabama 5,873 67 373 707 59 702 1,448 12 71 24 42 51 7 24 1 9,461 6,135
Alaska 697 16 34 135 16 114 235 7 22 3 4 2 0 0 0 1,285 744
Arizona 6,404 231 415 922 119 826 1,821 15 136 48 139 47 1 50 10 11,184 7,048
Arkansas 4,109 167 240 377 17 482 811 5 19 29 65 53 2 32 13 6,421 4,344
California 23,413 1,044 1,619 4,250 474 3,125 6,763 54 154 174 438 104 7 80 19 41,718 27,222
Colorado 5,727 159 337 947 32 883 1,904 11 173 23 210 47 4 106 19 10,582 6,028
Connecticut 3,850 133 277 608 10 819 974 20 70 11 52 36 2 31 17 6,910 4,230
Delaware 1,150 39 64 198 2 183 292 4 16 0 16 13 0 13 0 1,990 1,225
District of Columbia 122 2 21 21 0 14 17 0 1 0 4 2 0 0 0 204 140
Federated States of Micronesia 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
Florida 24,362 1,189 1,982 4,015 364 3,177 7,091 74 272 59 552 180 33 62 50 43,462 27,212
Georgia 11,263 342 824 1,554 52 1,426 2,666 33 92 18 165 57 5 44 11 18,552 11,977
Hawaii 1,004 31 69 147 3 188 248 2 7 12 34 11 0 8 1 1,765 1,049
Idaho 2,307 71 115 331 6 364 767 2 63 12 57 7 1 2 3 4,108 2,376
Illinois 13,776 374 992 1,867 44 1,982 3,085 18 128 59 136 55 6 80 9 22,611 14,708
Indiana 8,307 142 637 996 46 1,089 2,232 18 69 24 84 41 2 79 14 13,780 8,914
Iowa 4,163 136 222 463 3 815 1,065 12 61 19 53 34 2 15 8 7,071 4,296
Kansas 3,533 106 207 436 9 607 979 8 47 4 68 21 1 5 8 6,039 3,611
Kentucky 6,691 65 323 829 34 818 1,899 17 58 75 126 55 6 52 10 11,058 6,881
Louisiana 6,292 296 326 497 13 669 1,100 11 43 26 33 27 11 13 3 9,360 6,442
Maine 1,753 52 88 203 1 272 490 5 25 4 26 18 0 11 2 2,950 1,842
Maryland 5,522 206 414 921 6 930 1,392 23 48 22 102 80 1 8 8 9,683 6,084
Massachusetts 6,125 328 537 1,138 6 1,014 1,580 17 56 30 83 63 1 31 12 11,021 7,090
Michigan 9,812 311 907 1,467 18 1,560 2,597 17 146 31 235 52 13 72 7 17,245 11,155
Minnesota 6,341 62 516 969 9 1,161 1,681 19 168 23 132 27 2 40 1 11,151 6,698
Mississippi 4,489 174 214 322 16 464 803 3 41 6 52 28 5 8 10 6,635 4,565
Missouri 7,106 140 456 949 64 934 1,889 29 115 42 136 51 7 39 7 11,964 7,393
Montana 1,468 36 85 178 3 261 441 4 18 11 23 9 0 3 4 2,544 1,500
Nebraska 2,767 60 164 383 1 496 924 9 37 13 45 15 0 4 1 4,919 2,805
Nevada 2,560 131 179 414 7 317 765 4 16 25 70 10 1 2 1 4,502 2,837
New Hampshire 1,729 39 130 255 3 297 495 5 40 1 31 16 3 12 0 3,056 1,889
New Jersey 8,685 468 746 1,555 45 1,632 2,046 49 140 21 77 61 1 25 15 15,566 9,526
New Mexico 2,017 96 86 257 12 257 622 11 35 1 13 12 0 10 2 3,431 2,136
New York 16,721 760 1,334 2,699 68 2,792 4,451 52 237 74 229 68 10 58 36 29,589 18,777
North Carolina 12,282 436 895 1,710 67 1,775 3,263 48 209 53 248 122 12 80 17 21,217 13,085
North Dakota 1,060 12 70 115 4 200 264 5 11 9 38 12 0 5 4 1,809 1,077
Ohio 14,298 560 895 2,130 33 1,919 3,740 41 148 93 208 114 2 39 16 24,236 15,397
Oklahoma 4,342 133 322 480 42 560 1,206 10 52 20 39 28 1 26 11 7,272 4,714
Oregon 3,293 164 280 546 12 571 1,154 10 59 48 55 27 1 7 10 6,237 3,660
Palau 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
Pennsylvania 15,364 558 1,123 2,158 24 2,250 3,371 45 311 51 331 152 6 74 32 25,850 16,401
Rhode Island 1,119 62 44 234 0 238 311 2 6 2 19 8 0 0 2 2,047 1,245
South Carolina 6,287 234 332 818 72 858 1,624 13 58 11 98 54 13 51 10 10,533 6,706
South Dakota 1,322 24 89 132 3 272 425 5 42 0 29 11 0 15 1 2,370 1,352
Tennessee 8,970 283 567 1,009 37 1,092 2,130 18 177 20 138 57 5 60 9 14,572 9,366
Texas 27,089 984 1,661 3,577 662 3,256 8,407 71 211 90 320 135 32 158 33 46,686 29,749
Utah 3,339 173 221 560 4 453 839 2 23 6 67 10 0 6 5 5,708 3,493
Vermont 602 14 71 92 1 137 232 1 30 1 15 4 0 5 0 1,205 685
Virginia 8,316 185 676 1,080 88 1,212 1,965 31 131 33 248 94 3 61 18 14,141 8,938
Washington 6,132 126 487 958 17 918 1,921 17 102 34 146 48 0 35 11 10,952 6,612
West Virginia 2,983 100 143 312 5 363 586 15 29 40 48 23 1 6 2 4,656 3,037
Wisconsin 7,324 54 585 940 11 1,248 1,920 14 141 24 161 32 3 49 4 12,510 7,826
Wyoming 789 26 40 119 3 193 306 7 21 9 19 5 0 3 2 1,542 807
Subtotal 335,050 11,602 23,434 47,980 2,647 48,185 89,237 925 4,385 1,468 5,759 2,289 213 1,699 489 575,362 363,031
AE (Armed Forces Europe) 103 1 5 14 0 9 32 0 0 0 3 0 0 1 0 168 107
AP (Armed Forces Pacific) 64 2 0 6 1 10 19 0 0 0 0 0 0 2 0 104 66
Subtotal 167 3 5 20 1 19 51 0 0 0 3 0 0 3 0 272 173
American Samoa 2 0 0 0 0 1 0 0 0 0 0 0 0 0 0 3 2
Canada 452 6 160 117 1 17 37 0 0 1 5 0 0 1 0 797 696
Guam 34 0 3 5 2 3 15 0 0 0 2 0 0 0 0 64 40
Other 213 19 24 43 0 32 52 1 1 4 0 0 0 3 1 393 261
Puerto Rico 357 5 4 41 0 21 98 0 4 0 2 1 0 0 1 534 367
Virgin Islands 21 0 3 3 0 3 8 0 0 0 0 0 0 0 0 38 23
Subtotal 1,079 30 194 209 3 77 210 1 5 5 9 1 0 4 2 1,829 1,389
Total 336,296 11,635 23,633 48,209 2,651 48,281 89,498 926 4,390 1,473 5,771 2,290 213 1,706 491 577,463 364,593

Discipline Abbreviations

RAD — Radiography

NMT — Nuclear Medicine Technology

THR — Radiation Therapy

MRI — Magnetic Resonance Imaging

SON — Sonography

MAM — Mammography

CT — Computed Tomography

QM — Quality Management

BD — Bone Densitometry

CI — Cardiac Interventional Radiography

VI — Vascular Interventional Radiography

CV — Cardiovscular Interventional Radiography

VS — Vascular Sonography

BS — Breast Sonography