Last Updated: May-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 5,826 68 366 703 61 700 1,440 12 70 24 40 49 7 24 1 9,391 6,083
Alaska 686 16 31 131 17 118 234 7 22 3 4 2 0 0 0 1,271 732
Arizona 6,313 229 409 904 114 817 1,791 14 138 48 142 47 2 48 10 11,026 6,937
Arkansas 4,037 160 236 367 19 476 800 5 19 29 64 53 2 32 12 6,311 4,262
California 23,019 1,051 1,611 4,143 462 3,109 6,721 54 151 165 432 106 6 79 19 41,128 26,704
Colorado 5,710 155 340 936 26 876 1,889 11 167 23 203 47 4 104 19 10,510 5,999
Connecticut 3,783 132 272 605 10 824 967 21 69 12 49 38 2 30 18 6,832 4,155
Delaware 1,144 39 61 195 2 178 290 4 16 0 16 13 0 13 0 1,971 1,216
District of Columbia 119 2 21 23 0 13 18 0 1 0 3 2 0 0 0 202 138
Federated States of Micronesia 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
Florida 24,281 1,184 1,959 3,983 367 3,149 7,014 75 271 58 543 189 34 60 48 43,215 27,098
Georgia 11,227 339 806 1,543 49 1,422 2,647 33 90 17 165 59 5 43 11 18,456 11,917
Hawaii 985 30 68 147 3 188 252 2 8 14 35 11 0 8 1 1,752 1,029
Idaho 2,275 67 110 318 5 359 758 2 60 12 57 7 1 2 3 4,036 2,338
Illinois 13,647 377 970 1,829 43 1,971 3,060 18 127 58 136 56 3 79 8 22,382 14,555
Indiana 8,270 142 619 983 43 1,089 2,206 18 68 24 85 41 2 77 14 13,681 8,857
Iowa 4,098 136 219 462 3 806 1,060 12 60 19 52 34 2 14 8 6,985 4,233
Kansas 3,499 104 201 429 9 601 982 8 46 3 66 21 2 5 8 5,984 3,577
Kentucky 6,672 62 327 820 35 820 1,893 17 58 74 125 56 6 53 10 11,028 6,862
Louisiana 6,205 291 322 493 12 671 1,092 11 42 26 32 29 11 12 3 9,252 6,351
Maine 1,736 54 88 199 1 273 479 5 24 4 26 19 0 11 2 2,921 1,824
Maryland 5,467 205 417 914 4 939 1,398 25 49 22 101 82 1 9 8 9,641 6,023
Massachusetts 6,064 330 529 1,126 5 1,022 1,582 18 58 30 84 65 1 30 12 10,956 7,015
Michigan 9,724 313 899 1,454 17 1,559 2,582 17 146 31 227 54 13 71 7 17,114 11,042
Minnesota 6,215 61 503 969 9 1,161 1,665 20 168 23 130 29 2 41 1 10,997 6,562
Mississippi 4,477 175 215 316 17 459 787 3 41 6 51 28 5 8 10 6,598 4,557
Missouri 7,048 140 445 930 67 930 1,882 30 116 43 134 50 7 38 8 11,868 7,329
Montana 1,466 37 85 178 3 263 435 4 18 11 24 9 0 3 4 2,540 1,499
Nebraska 2,734 59 161 380 0 499 920 9 37 13 44 16 0 4 1 4,877 2,773
Nevada 2,475 135 177 410 6 321 760 5 16 25 68 9 1 2 0 4,410 2,750
New Hampshire 1,692 41 130 251 3 298 498 5 39 1 30 16 3 12 0 3,019 1,851
New Jersey 8,542 468 745 1,546 48 1,633 2,032 50 140 21 78 61 1 24 15 15,404 9,373
New Mexico 1,983 96 84 255 12 258 618 11 35 2 13 13 0 9 2 3,391 2,103
New York 16,282 763 1,318 2,679 59 2,800 4,415 53 235 72 228 69 10 58 36 29,077 18,317
North Carolina 12,237 426 879 1,690 67 1,775 3,240 48 213 52 240 123 12 80 16 21,098 13,027
North Dakota 1,035 12 69 114 4 195 265 5 11 9 35 12 0 5 4 1,775 1,052
Ohio 14,265 558 893 2,094 28 1,923 3,720 42 148 92 205 117 2 40 16 24,143 15,347
Oklahoma 4,290 128 322 475 39 559 1,190 10 47 20 38 28 1 26 11 7,184 4,654
Oregon 3,249 157 270 547 12 576 1,148 11 60 46 56 27 1 7 10 6,177 3,599
Palau 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
Pennsylvania 15,282 557 1,123 2,139 22 2,252 3,359 44 316 50 331 153 6 73 32 25,739 16,313
Rhode Island 1,098 62 44 232 0 239 307 2 6 2 19 7 0 0 2 2,020 1,221
South Carolina 6,235 229 328 795 69 852 1,612 13 59 10 95 56 12 51 11 10,427 6,640
South Dakota 1,309 23 88 131 3 276 425 5 43 0 28 11 0 15 1 2,358 1,337
Tennessee 8,874 274 567 989 35 1,088 2,109 18 173 20 136 59 5 57 9 14,413 9,259
Texas 26,698 984 1,639 3,531 640 3,237 8,273 72 208 91 319 134 33 151 34 46,044 29,304
Utah 3,311 160 213 549 3 446 827 2 23 6 67 10 0 6 5 5,628 3,460
Vermont 607 14 67 94 1 136 234 1 30 1 15 4 0 4 0 1,208 686
Virginia 8,246 186 673 1,072 87 1,198 1,941 31 128 33 246 94 3 61 18 14,017 8,862
Washington 6,007 124 484 947 15 916 1,907 17 101 34 143 48 0 35 10 10,788 6,481
West Virginia 2,987 98 141 308 5 363 579 15 30 41 48 24 1 6 2 4,648 3,041
Wisconsin 7,203 55 566 928 5 1,246 1,911 14 136 24 160 32 3 48 4 12,335 7,676
Wyoming 789 28 38 116 2 191 308 7 19 9 19 5 0 3 2 1,536 806
Subtotal 331,424 11,537 23,148 47,372 2,568 48,070 88,522 936 4,356 1,453 5,687 2,324 212 1,671 486 569,766 358,828
AE (Armed Forces Europe) 102 1 6 13 0 10 31 0 0 0 1 0 0 1 0 165 106
AP (Armed Forces Pacific) 62 2 0 6 1 8 19 0 0 0 1 0 0 0 0 99 64
Subtotal 164 3 6 19 1 18 50 0 0 0 2 0 0 1 0 264 170
American Samoa 2 0 0 0 0 1 0 0 0 0 0 0 0 0 0 3 2
Canada 446 7 160 113 0 18 37 0 1 1 5 0 0 1 0 789 685
Guam 33 0 2 6 2 3 15 0 0 0 2 0 0 0 0 63 38
Other 212 20 25 41 0 34 51 1 1 4 0 0 0 4 1 394 261
Puerto Rico 353 5 5 43 0 20 96 0 4 0 2 1 0 0 1 530 363
Virgin Islands 22 0 3 3 0 3 8 0 0 0 0 0 0 0 0 39 24
Subtotal 1,068 32 195 206 2 79 207 1 6 5 9 1 0 5 2 1,818 1,373
Total 332,656 11,572 23,349 47,597 2,571 48,167 88,779 937 4,362 1,458 5,698 2,325 212 1,677 488 571,848 360,371

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