The Old-Age, Survivors, and Disability Insurance (OASDI) is a program of the Social Security Administration funded primarily through payroll taxes. It was signed into law in 1935 by then-President Franklin D. Roosevelt.
The OASDI program aims to supplement a worker's lost wages due to retirement, disability or death of a spouse.
The following table shows Social Security field offices ranked by number of widow and parent beneficiaries in South Dakota.
Field Offices Ranking by Number of Widow and Parent Beneficiaries in South Dakota (2018)
| Rank | Field Office | Number of Widow and Parent Beneficiaries |
|---|---|---|
| 1 | Rapid City | 2,860 |
| 2 | Sioux Falls | 2,815 |
| 3 | Huron | 2,080 |
| 4 | Aberdeen | 1,510 |
| 5 | Watertown | 845 |
| 6 | Yankton | 775 |
| 7 | Sioux City, IA | 205 |
| 8 | Fergus Falls, MN | 10 |
| 9 | Bismarck, ND | 5 |
| 10 | North Platte, NE | 0 |
| 10 | Marshall, MN | 0 |
| 10 | Fargo, ND | 0 |
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