Last Updated: Apr-2026
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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 5,837 71 368 728 59 712 1,468 10 68 23 44 48 8 24 1 9,469 6,104
Alaska 688 15 33 136 13 115 242 7 21 3 3 2 0 0 0 1,278 736
Arizona 6,383 221 410 953 138 829 1,860 14 139 48 148 46 1 51 11 11,252 7,071
Arkansas 4,081 159 238 387 15 477 847 5 19 30 66 50 2 33 13 6,422 4,302
California 23,420 1,057 1,622 4,471 531 3,139 6,865 55 161 179 442 105 7 84 17 42,155 27,535
Colorado 5,672 153 329 991 42 888 1,949 11 176 24 211 46 3 111 19 10,625 5,987
Connecticut 3,788 124 276 616 13 807 986 20 71 10 55 33 2 31 17 6,849 4,167
Delaware 1,135 39 64 197 2 177 301 5 17 0 16 12 0 12 0 1,977 1,212
District of Columbia 124 3 21 22 0 13 22 0 1 0 4 2 0 0 0 212 143
Federated States of Micronesia 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
Florida 24,584 1,151 2,019 4,115 373 3,169 7,255 72 263 61 570 166 34 62 53 43,947 27,502
Georgia 11,315 340 821 1,589 56 1,439 2,733 32 90 22 170 54 4 44 10 18,719 12,038
Hawaii 1,004 33 69 147 3 190 261 2 7 13 36 12 0 8 1 1,786 1,052
Idaho 2,311 70 117 338 9 371 796 3 68 13 57 7 1 2 3 4,166 2,384
Illinois 13,554 370 982 1,871 58 1,984 3,118 18 130 63 138 53 12 85 9 22,445 14,515
Indiana 8,217 138 626 1,012 49 1,095 2,247 19 66 24 90 38 3 82 16 13,722 8,818
Iowa 4,096 130 215 483 2 813 1,091 12 62 19 54 28 2 15 7 7,029 4,225
Kansas 3,473 105 201 443 5 607 982 8 48 4 74 19 1 6 8 5,984 3,546
Kentucky 6,657 63 324 845 32 826 1,950 17 58 78 127 52 6 54 12 11,101 6,844
Louisiana 6,202 295 325 508 20 676 1,136 11 45 28 38 27 11 14 3 9,339 6,368
Maine 1,714 50 89 211 1 273 490 5 24 5 27 16 0 11 2 2,918 1,807
Maryland 5,447 200 402 928 7 917 1,401 22 48 23 103 76 1 12 8 9,595 5,998
Massachusetts 6,023 315 526 1,138 6 992 1,588 16 54 31 81 59 1 32 12 10,874 6,974
Michigan 9,724 299 880 1,492 11 1,551 2,652 18 148 35 240 48 12 71 7 17,188 11,049
Minnesota 6,351 64 517 984 9 1,156 1,724 18 170 23 135 27 2 38 1 11,219 6,718
Mississippi 4,445 173 213 329 11 462 822 3 41 7 53 27 5 8 10 6,609 4,512
Missouri 6,996 130 449 962 60 944 1,928 26 119 43 144 47 7 43 7 11,905 7,276
Montana 1,473 36 88 186 4 261 453 4 18 11 25 9 0 3 4 2,575 1,510
Nebraska 2,754 62 162 390 1 492 946 8 37 13 44 14 0 4 1 4,928 2,792
Nevada 2,544 132 172 432 9 311 783 2 14 27 76 10 1 2 1 4,516 2,836
New Hampshire 1,724 41 127 265 3 294 509 4 40 2 35 14 3 13 0 3,074 1,887
New Jersey 8,623 460 754 1,573 44 1,629 2,117 50 140 22 77 61 2 25 15 15,592 9,472
New Mexico 2,022 92 91 267 12 252 644 10 34 2 16 12 0 9 2 3,465 2,141
New York 16,738 738 1,330 2,760 83 2,785 4,552 49 232 76 241 65 11 60 38 29,758 18,788
North Carolina 12,169 443 898 1,747 66 1,775 3,337 47 209 52 251 119 10 85 16 21,224 12,994
North Dakota 1,046 13 73 117 2 202 266 5 11 9 38 11 0 5 4 1,802 1,061
Ohio 14,091 548 882 2,160 33 1,893 3,800 37 149 92 209 108 2 41 17 24,062 15,192
Oklahoma 4,309 132 322 500 55 559 1,251 10 55 20 42 27 1 25 11 7,319 4,694
Oregon 3,304 161 277 554 18 569 1,178 8 65 51 57 28 1 9 9 6,289 3,674
Palau 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
Pennsylvania 15,189 546 1,119 2,189 25 2,249 3,393 45 316 51 339 147 6 74 33 25,721 16,241
Rhode Island 1,100 64 46 235 0 233 312 2 6 3 19 6 0 0 1 2,027 1,228
South Carolina 6,253 234 332 834 78 861 1,653 11 59 8 101 55 12 50 10 10,551 6,685
South Dakota 1,317 24 87 137 3 273 430 4 46 0 32 11 0 15 1 2,380 1,348
Tennessee 8,890 281 563 1,025 44 1,094 2,164 18 178 22 142 55 4 62 10 14,552 9,293
Texas 27,124 972 1,649 3,681 704 3,299 8,616 69 219 96 329 127 33 166 33 47,117 29,842
Utah 3,362 176 216 582 12 453 854 2 22 4 69 10 0 7 5 5,774 3,542
Vermont 596 14 68 94 1 139 232 1 30 1 16 4 0 5 0 1,201 677
Virginia 8,189 183 662 1,087 95 1,198 1,989 31 130 32 257 89 3 62 17 14,024 8,806
Washington 6,113 129 490 994 23 918 1,973 16 103 34 152 45 1 37 11 11,039 6,619
West Virginia 2,925 95 143 316 5 353 605 12 29 41 47 22 1 6 2 4,602 2,979
Wisconsin 7,208 52 580 961 16 1,224 1,981 12 146 27 168 32 3 49 4 12,463 7,711
Wyoming 775 25 41 122 3 190 327 6 22 9 20 5 0 3 2 1,550 792
Subtotal 333,080 11,422 23,308 49,104 2,864 48,128 91,079 892 4,424 1,514 5,928 2,186 219 1,750 494 576,392 361,689
AE (Armed Forces Europe) 96 0 6 13 1 9 34 0 0 0 1 0 0 2 0 162 102
AP (Armed Forces Pacific) 65 2 0 8 0 9 21 0 0 0 0 0 0 2 0 107 66
Subtotal 161 2 6 21 1 18 55 0 0 0 1 0 0 4 0 269 168
American Samoa 2 0 0 0 0 1 0 0 0 0 0 0 0 0 0 3 2
Canada 440 7 155 133 1 16 37 0 0 1 5 0 0 1 0 796 694
Guam 36 0 3 5 2 3 15 0 0 0 2 0 0 0 0 66 42
Other 213 18 23 43 0 31 55 1 2 4 0 0 0 3 1 394 259
Puerto Rico 366 5 3 47 0 22 101 0 4 0 3 1 0 0 1 553 375
Virgin Islands 20 0 3 3 0 3 8 0 0 0 0 0 0 0 0 37 22
Subtotal 1,077 30 187 231 3 76 216 1 6 5 10 1 0 4 2 1,849 1,394
Total 334,318 11,454 23,501 49,356 2,868 48,222 91,350 893 4,430 1,519 5,939 2,187 219 1,758 496 578,510 363,251

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