Number of Chicago Community Pharmacies over Time from Telephone Directories
| Year | Independent | Small Chain | Retail Chain | Grand Total |
|---|---|---|---|---|
| 1 Location | 4 or Fewer Locations | More than 4 Locations | ||
| 1950 | 1388 | 56 | 154 | 1,598 |
| 26 companies | 8 companies | |||
| 1955 | 1312 | 56 | 147 | 1,515 |
| 25 companies | 8 companies | |||
| 1960 | 1212 | 61 | 151 | 1,424 |
| 26 companies | 8 companies | |||
| 1983 | 703 | 13 | 137 | 853 |
| 7 companies | 9 companies | |||
| 1991 | 439 | 12 | 154 | 605 |
| 6 companies | 7 companies | |||
| 1996 | 311 | 10 | 164 | 485 |
| 4 companies | 5 companies | |||
| 2000 | 242 | 7 | 190 | 439 |
| 4 companies | 6 companies |