This list ranks which categories of regulation consume the largest share of the Code of Federal Regulations. By far, regulations to protect the environment and collect revenues make up the biggest share, or 25 percent of the total.
Number of pages in CFR PDF | Share of total | Category | |
|---|---|---|---|
| 1 | Protection of Environment | 27,78427784 | 16%15.6 |
| 2 | Internal Revenue | 16,28616286 | 9.2%9.2 |
| 3 | Agriculture | 10,25610256 | 5.8%5.8 |
| 4 | Wildlife and Fisheries | 9,4429442 | 5.3%5.3 |
| 5 | Banks and Banking | 9,1349134 | 5.1%5.1 |
| 6 | Transportation | 6,9796979 | 3.9%3.9 |
| 7 | Labor | 6,7206720 | 3.8%3.8 |
| 8 | Federal Acquisition Regulations System | 5,0695069 | 2.9%2.9 |
| 9 | National Defense | 4,6084608 | 2.6%2.6 |
| 10 | Food and Drugs | 4,4614461 | 2.5%2.5 |
