word | | Area - comparative |
| size | Pacific Ocean | about 15 times the size of the US; covers about 28% of the global surface; almost equal to the total land area of the world |
| size | Pakistan | slightly less than twice the size of California |
| size | Palau | slightly more than 2.5 times the size of Washington, DC |
| size | Pitcairn Islands | about three tenths the size of Washington, DC |
| size | Puerto Rico | slightly less than three times the size of Rhode Island |
| size | Russia | approximately 1.8 times the size of the US |
| size | Saint Barthelemy | less than an eighth of the size of Washington, DC |
| size | Saint Helena | slightly more than twice the size of Washington, DC |
| size | Saint Kitts and Nevis | one and a half times the size of Washington, DC |
| size | Saint Lucia | three and a half times the size of Washington, DC |
| size | Saint Martin | more than one-third the size of Washington, DC |
| size | Saint Pierre and Miquelon | one and half times the size of Washington, DC |
| size | Saint Vincent and the Grenadines | twice the size of Washington, DC |
| size | San Marino | about one third times the size of Washington, DC |
| size | Sao Tome and Principe | more than five times the size of Washington, DC |
| size | Saudi Arabia | slightly more than one-fifth the size of the US |