| 1 | Fresno County, California | $1,322,470,615 | 0.4% | 0.4% |
| 2 | Gaines County, Texas | $1,090,869,689 | 0.3% | 0.7% |
| 3 | Kern County, California | $1,025,681,857 | 0.3% | 1.0% |
| 4 | Tulare County, California | $901,847,307 | 0.3% | 1.2% |
| 5 | Hale County, Texas | $885,814,258 | 0.3% | 1.5% |
| 6 | Whitman County, Washington | $861,203,628 | 0.2% | 1.7% |
| 7 | Cass County, North Dakota | $857,472,727 | 0.2% | 2.0% |
| 8 | Brown County, South Dakota | $829,415,845 | 0.2% | 2.2% |
| 9 | Colusa County, California | $818,119,655 | 0.2% | 2.4% |
| 10 | Dawson County, Texas | $812,899,897 | 0.2% | 2.7% |
| 11 | Polk County, Minnesota | $812,790,055 | 0.2% | 2.9% |
| 12 | Cavalier County, North Dakota | $781,009,068 | 0.2% | 3.1% |
| 13 | Richland County, North Dakota | $733,340,112 | 0.2% | 3.3% |
| 14 | Wharton County, Texas | $732,480,820 | 0.2% | 3.5% |
| 15 | Terry County, Texas | $716,822,851 | 0.2% | 3.7% |
| 16 | Marshall County, Minnesota | $716,264,063 | 0.2% | 3.9% |
| 17 | Stutsman County, North Dakota | $710,046,902 | 0.2% | 4.1% |
| 18 | Poinsett County, Arkansas | $707,903,099 | 0.2% | 4.3% |
| 19 | Kit Carson County, Colorado | $699,287,723 | 0.2% | 4.5% |
| 20 | Lamb County, Texas | $699,104,693 | 0.2% | 4.7% |
| 21 | Bolivar County, Mississippi | $689,995,339 | 0.2% | 4.9% |
| 22 | Chouteau County, Montana | $682,315,229 | 0.2% | 5.1% |
| 23 | Iroquois County, Illinois | $678,425,312 | 0.2% | 5.3% |
| 24 | McLean County, Illinois | $653,771,934 | 0.2% | 5.5% |
| 25 | Yuma County, Colorado | $649,126,051 | 0.2% | 5.7% |
| 26 | Mississippi County, Arkansas | $642,271,653 | 0.2% | 5.9% |
| 27 | Lubbock County, Texas | $638,936,388 | 0.2% | 6.0% |
| 28 | Kossuth County, Iowa | $638,523,128 | 0.2% | 6.2% |
| 29 | Floyd County, Texas | $633,637,556 | 0.2% | 6.4% |
| 30 | Parmer County, Texas | $632,329,180 | 0.2% | 6.6% |
| 31 | Grand Forks County, North Dakota | $631,035,246 | 0.2% | 6.8% |
| 32 | Barnes County, North Dakota | $630,421,189 | 0.2% | 6.9% |
| 33 | Sutter County, California | $626,285,398 | 0.2% | 7.1% |
| 34 | Stoddard County, Missouri | $613,882,070 | 0.2% | 7.3% |
| 35 | Hockley County, Texas | $610,409,694 | 0.2% | 7.5% |
| 36 | Spink County, South Dakota | $608,143,482 | 0.2% | 7.6% |
| 37 | Lynn County, Texas | $607,632,155 | 0.2% | 7.8% |
| 38 | Livingston County, Illinois | $602,495,994 | 0.2% | 8.0% |
| 39 | Walsh County, North Dakota | $596,112,986 | 0.2% | 8.1% |
| 40 | Deaf Smith County, Texas | $589,730,694 | 0.2% | 8.3% |
| 41 | Lincoln County, Washington | $587,261,293 | 0.2% | 8.5% |
| 42 | Kings County, California | $585,822,644 | 0.2% | 8.6% |
| 43 | La Salle County, Illinois | $583,243,823 | 0.2% | 8.8% |
| 44 | Castro County, Texas | $579,655,998 | 0.2% | 9.0% |
| 45 | Texas County, Oklahoma | $578,223,422 | 0.2% | 9.1% |
| 46 | Renville County, Minnesota | $576,625,116 | 0.2% | 9.3% |
| 47 | Washington County, Mississippi | $572,079,654 | 0.2% | 9.5% |
| 48 | Butte County, California | $569,264,683 | 0.2% | 9.6% |
| 49 | Craighead County, Arkansas | $567,055,988 | 0.2% | 9.8% |
| 50 | Pinal County, Arizona | $557,484,889 | 0.2% | 9.9% |
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