| County Name | State | Average Interest Income | Rank* | |||||
| Cottle County | Texas | $11,931 | 1 | |||||
| Teton County | Wyoming | $8,481 | 2 | |||||
| Pitkin County | Colorado | $8,165 | 3 | |||||
| San Juan County | Washington | $7,827 | 4 | |||||
| Collier County | Florida | $7,595 | 5 | |||||
| Martin County | Florida | $6,917 | 6 | |||||
| Palm Beach County | Florida | $6,608 | 7 | |||||
| Indian River County | Florida | $6,321 | 8 | |||||
| McMullen County | Texas | $5,717 | 9 | |||||
| Marin County | California | $5,507 | 10 | |||||
| Sarasota County | Florida | $5,368 | 11 | |||||
| New York County | New York | $5,133 | 12 | |||||
| Dundy County | Nebraska | $4,971 | 13 | |||||
| Monroe County | Florida | $4,868 | 14 | |||||
| Blaine County | Idaho | $4,777 | 15 | |||||
| Fairfield County | Connecticut | $4,724 | 16 | |||||
| Storey County | Nevada | $4,605 | 17 | |||||
| Westchester County | New York | $4,458 | 18 | |||||
| Clear Creek County | Colorado | $4,325 | 19 | |||||
| Talbot County | Maryland | $4,321 | 20 | |||||
| Gillespie County | Texas | $4,265 | 21 | |||||
| Highland County | Virginia | $4,265 | 21 | |||||
| Nassau County | New York | $4,210 | 23 | |||||
| Bergen County | New Jersey | $4,185 | 24 | |||||
| Douglas County | Nevada | $4,183 | 25 | |||||
| Summit County | Utah | $4,108 | 26 | |||||
| Wichita County | Kansas | $4,104 | 27 | |||||
| Potter County | South Dakota | $4,093 | 28 | |||||
| Borden County | Texas | $4,073 | 29 | |||||
| Hemphill County | Texas | $4,000 | 30 | |||||
| Smith County | Kansas | $3,993 | 31 | |||||
| Kerr County | Texas | $3,957 | 32 | |||||
| Lancaster County | Virginia | $3,906 | 33 | |||||
| San Mateo County | California | $3,885 | 34 | |||||
| Divide County | North Dakota | $3,875 | 35 | |||||
| Garden County | Nebraska | $3,823 | 36 | |||||
| Prairie County | Montana | $3,820 | 37 | |||||
| Rock County | Nebraska | $3,820 | 37 | |||||
| Decatur County | Kansas | $3,812 | 39 | |||||
| Northumberland County | Virginia | $3,778 | 40 | |||||
| Aurora County | South Dakota | $3,767 | 41 | |||||
| Nemaha County | Kansas | $3,763 | 42 | |||||
| McIntosh County | North Dakota | $3,751 | 43 | |||||
| Lee County | Florida | $3,747 | 44 | |||||
| Hand County | South Dakota | $3,715 | 45 | |||||
| St. Johns County | Florida | $3,714 | 46 | |||||
| Towner County | North Dakota | $3,711 | 47 | |||||
| Lake County | Illinois | $3,703 | 48 | |||||
| Sioux County | Nebraska | $3,699 | 49 | |||||
| Sweet Grass County | Montana | $3,693 | 50 | |||||
| Union County | South Dakota | $3,693 | 50 | |||||