The Old-Age, Survivors, and Disability Insurance (OASDI) program 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 disabled workers in Iowa.
Field Offices Ranking by Number of Disabled Workers in Iowa (2019)
| Rank | Field Office | Number of Disabled Workers |
|---|---|---|
| 1 | Des Moines | 12,910 |
| 2 | Waterloo | 8,020 |
| 3 | Davenport | 7,285 |
| 4 | Cedar Rapids | 6,780 |
| 5 | Ottumwa | 5,085 |
| 6 | Sioux City | 4,640 |
| 7 | Council Bluffs | 4,270 |
| 8 | Dubuque | 3,850 |
| 9 | Burlington | 3,330 |
| 10 | Creston | 3,285 |
| 11 | Mason City | 2,950 |
| 12 | Ames | 2,935 |
| 13 | Fort Dodge | 2,905 |
| 14 | Coralville | 2,785 |
| 15 | Carroll | 2,165 |
| 16 | Spencer | 2,110 |
| 17 | Marshalltown | 1,090 |
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