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 retired workers in Arizona.
Field Offices Ranking by Number of Retired Workers in Arizona (2018)
| Rank | Field Office | Number of Retired Workers |
|---|---|---|
| 1 | Phoenix, North | 150,095 |
| 2 | Glendale | 138,680 |
| 3 | Tucson | 124,695 |
| 4 | Mesa | 101,055 |
| 5 | Prescott | 94,060 |
| 6 | Apache Junction | 88,940 |
| 7 | Phoenix, Downtown | 76,815 |
| 8 | Tucson, South | 47,245 |
| 9 | Casa Grande | 31,515 |
| 10 | Yuma | 27,370 |
| 11 | Flagstaff | 23,435 |
| 12 | Douglas | 23,130 |
| 13 | Colorado River Basin, CA | 19,455 |
| 14 | Show Low | 14,355 |
| 15 | Nogales | 7,800 |
| 16 | Safford | 6,345 |
| 17 | Globe | 6,070 |
| 18 | Farmington, NM | 4,945 |
| 19 | Blythe, CA | 2,290 |
| 20 | Gallup, NM | 1,950 |
| 21 | Chinle | 970 |
| 22 | Tuba City | 900 |
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