| # | County | State | Population | Change since 2020 | Unemployment rate |
|---|
| 1 | Rabun County | Georgia | 17,711 | 4.9 % | 3.3 % |
| 2 | Racine County | Wisconsin | 198,651 | 0.2 % | 3.8 % |
| 3 | Radford city | Virginia | 17,273 | 7.5 % | 4.5 % |
| 4 | Rains County | Texas | 13,306 | 9.5 % | 3.9 % |
| 5 | Raleigh County | West Virginia | 72,379 | -3.0 % | 4.3 % |
| 6 | Ralls County | Missouri | 10,499 | 1.4 % | 3.8 % |
| 7 | Ramsey County | Minnesota | 542,015 | -1.9 % | 3.8 % |
| 8 | Ramsey County | North Dakota | 11,510 | -0.9 % | 2.5 % |
| 9 | Randall County | Texas | 150,547 | 7.0 % | 2.9 % |
| 10 | Randolph County | North Carolina | 148,389 | 2.9 % | 3.6 % |
| 11 | Randolph County | Illinois | 29,903 | -0.8 % | 3.9 % |
| 12 | Randolph County | West Virginia | 27,190 | -2.7 % | 5.5 % |
| 13 | Randolph County | Indiana | 24,337 | -0.7 % | 3.8 % |
| 14 | Randolph County | Missouri | 24,077 | -2.6 % | 3.8 % |
| 15 | Randolph County | Alabama | 23,067 | 5.0 % | 3.4 % |
| 16 | Randolph County | Arkansas | 19,040 | 2.5 % | 4.0 % |
| 17 | Randolph County | Georgia | 6,085 | -5.2 % | 4.1 % |
| 18 | Rankin County | Mississippi | 160,573 | 2.3 % | 2.8 % |
| 19 | Ransom County | North Dakota | 5,590 | -1.9 % | 3.3 % |
| 20 | Rapides Parish | Louisiana | 125,899 | -3.2 % | 3.9 % |
| 21 | Rappahannock County | Virginia | 7,479 | 1.7 % | 3.0 % |
| 22 | Ravalli County | Montana | 48,187 | 9.1 % | 3.8 % |
| 23 | Rawlins County | Kansas | 2,432 | -5.3 % | 2.8 % |
| 24 | Ray County | Missouri | 23,199 | 0.2 % | 4.2 % |
| 25 | Reagan County | Texas | 3,139 | -8.4 % | 4.2 % |
| 26 | Real County | Texas | 2,772 | 0.5 % | 4.3 % |
| 27 | Red Lake County | Minnesota | 3,882 | -1.4 % | 6.4 % |
| 28 | Red River County | Texas | 11,696 | 1.0 % | 4.6 % |
| 29 | Red River Parish | Louisiana | 7,238 | -5.0 % | 5.3 % |
| 30 | Red Willow County | Nebraska | 10,409 | -2.7 % | 2.5 % |
| 31 | Redwood County | Minnesota | 15,254 | -1.1 % | 3.9 % |
| 32 | Reeves County | Texas | 11,956 | -18.9 % | 3.7 % |
| 33 | Refugio County | Texas | 6,739 | 0.0 % | 4.9 % |
| 34 | Reno County | Kansas | 61,417 | -0.8 % | 3.9 % |
| 35 | Rensselaer County | New York | 160,749 | -0.2 % | 3.5 % |
| 36 | Renville County | Minnesota | 14,453 | -1.8 % | 5.6 % |
| 37 | Renville County | North Dakota | 2,376 | 3.8 % | 2.2 % |
| 38 | Republic County | Kansas | 4,613 | -1.4 % | 3.1 % |
| 39 | Reynolds County | Missouri | 5,927 | -2.7 % | 4.7 % |
| 40 | Rhea County | Tennessee | 34,759 | 4.6 % | 4.2 % |
| 41 | Rice County | Minnesota | 69,025 | 2.9 % | 3.9 % |
| 42 | Rice County | Kansas | 9,284 | -1.5 % | 3.5 % |
| 43 | Rich County | Utah | 2,752 | 9.6 % | 3.4 % |
| 44 | Richardson County | Nebraska | 7,666 | -2.6 % | 2.8 % |
| 45 | Richland County | South Carolina | 430,651 | 3.5 % | 4.6 % |
| 46 | Richland County | Ohio | 124,853 | -0.1 % | 5.3 % |
| 47 | Richland County | Wisconsin | 17,123 | -1.1 % | 3.2 % |
| 48 | Richland County | North Dakota | 16,658 | 0.8 % | 2.8 % |
| 49 | Richland County | Illinois | 15,362 | -2.9 % | 3.7 % |
| 50 | Richland County | Montana | 11,028 | -4.0 % | 2.5 % |
| 51 | Richland Parish | Louisiana | 19,643 | -2.0 % | 5.2 % |
| 52 | Richmond city | Virginia | 233,655 | 3.1 % | 3.7 % |
| 53 | Richmond County | New York | 498,212 | 0.4 % | 4.7 % |
| 54 | Richmond County | Georgia | 206,303 | -0.1 % | 4.7 % |
| 55 | Richmond County | North Carolina | 41,990 | -2.2 % | 4.2 % |
| 56 | Richmond County | Virginia | 9,215 | 3.3 % | 4.0 % |
| 57 | Riley County | Kansas | 72,557 | 0.8 % | 3.4 % |
| 58 | Ringgold County | Iowa | 4,608 | -1.2 % | 2.9 % |
| 59 | Rio Arriba County | New Mexico | 39,955 | -1.0 % | 4.1 % |
| 60 | Rio Blanco County | Colorado | 6,607 | 1.2 % | 3.7 % |
| 61 | Rio Grande County | Colorado | 11,132 | -3.6 % | 4.5 % |
| 62 | Ripley County | Indiana | 29,214 | 0.8 % | 3.4 % |
| 63 | Ripley County | Missouri | 10,715 | 0.4 % | 4.9 % |
| 64 | Ritchie County | West Virginia | 8,170 | -3.3 % | 5.4 % |
| 65 | Riverside County | California | 2,529,933 | 4.5 % | 5.6 % |
| 66 | Roane County | Tennessee | 56,742 | 6.0 % | 3.7 % |
| 67 | Roane County | West Virginia | 13,540 | -3.5 % | 7.0 % |
| 68 | Roanoke city | Virginia | 97,912 | -2.1 % | 3.6 % |
| 69 | Roanoke County | Virginia | 97,334 | 0.4 % | 3.1 % |
| 70 | Roberts County | South Dakota | 10,283 | 0.0 % | 3.5 % |
| 71 | Roberts County | Texas | 837 | 1.0 % | 4.6 % |
| 72 | Robertson County | Tennessee | 78,459 | 7.8 % | 3.0 % |
| 73 | Robertson County | Texas | 17,659 | 5.4 % | 4.3 % |
| 74 | Robertson County | Kentucky | 2,382 | 8.5 % | 5.8 % |
| 75 | Robeson County | North Carolina | 118,624 | 1.8 % | 5.3 % |
| 76 | Rock County | Wisconsin | 165,461 | 1.1 % | 3.5 % |
| 77 | Rock County | Minnesota | 9,525 | -1.8 % | 2.9 % |
| 78 | Rock County | Nebraska | 1,241 | -1.7 % | 2.3 % |
| 79 | Rock Island County | Illinois | 142,731 | -1.3 % | 5.2 % |
| 80 | Rockbridge County | Virginia | 22,368 | -1.3 % | 3.1 % |
| 81 | Rockcastle County | Kentucky | 16,226 | 1.2 % | 5.1 % |
| 82 | Rockdale County | Georgia | 97,610 | 4.4 % | 4.0 % |
| 83 | Rockingham County | New Hampshire | 322,433 | 2.6 % | 3.4 % |
| 84 | Rockingham County | North Carolina | 93,517 | 2.6 % | 4.2 % |
| 85 | Rockingham County | Virginia | 87,674 | 4.7 % | 2.9 % |
| 86 | Rockland County | New York | 348,144 | 2.9 % | 3.2 % |
| 87 | Rockwall County | Texas | 137,044 | 27.0 % | 3.7 % |
| 88 | Roger Mills County | Oklahoma | 3,304 | -3.9 % | 2.6 % |
| 89 | Rogers County | Oklahoma | 101,371 | 6.4 % | 3.0 % |
| 90 | Rolette County | North Dakota | 11,692 | -4.1 % | 5.6 % |
| 91 | Rooks County | Kansas | 4,748 | -3.3 % | 3.2 % |
| 92 | Roosevelt County | New Mexico | 18,713 | -2.5 % | 3.8 % |
| 93 | Roosevelt County | Montana | 10,197 | -5.6 % | 4.5 % |
| 94 | Roscommon County | Michigan | 23,932 | 2.1 % | 8.9 % |
| 95 | Roseau County | Minnesota | 15,265 | -0.5 % | 4.4 % |
| 96 | Rosebud County | Montana | 8,194 | -1.6 % | 3.4 % |
| 97 | Ross County | Ohio | 76,046 | -1.4 % | 5.7 % |
| 98 | Routt County | Colorado | 25,243 | 1.7 % | 3.3 % |
| 99 | Rowan County | North Carolina | 153,384 | 4.4 % | 3.8 % |
| 100 | Rowan County | Kentucky | 24,675 | 0.1 % | 5.6 % |
| 101 | Runnels County | Texas | 9,751 | -1.5 % | 3.5 % |
| 102 | Rush County | Indiana | 16,759 | 0.0 % | 3.4 % |
| 103 | Rush County | Kansas | 2,810 | -5.0 % | 3.5 % |
| 104 | Rusk County | Texas | 53,391 | 2.3 % | 4.4 % |
| 105 | Rusk County | Wisconsin | 14,168 | -0.2 % | 4.7 % |
| 106 | Russell County | Alabama | 58,837 | -0.6 % | 3.4 % |
| 107 | Russell County | Virginia | 25,420 | -1.4 % | 4.6 % |
| 108 | Russell County | Kentucky | 18,458 | 2.6 % | 5.0 % |
| 109 | Russell County | Kansas | 6,620 | -1.0 % | 3.8 % |
| 110 | Rutherford County | Tennessee | 376,996 | 10.4 % | 2.9 % |
| 111 | Rutherford County | North Carolina | 65,587 | 1.8 % | 4.8 % |
| 112 | Rutland County | Vermont | 60,198 | -0.6 % | 3.0 % |