| a | | Projected est. (medium fertility variant). |
| b | | For statistical purposes, the data for United States of America do not include American Samoa, Guam, Northern Mariana Islands, Puerto Rico, and United States Virgin Islands. |
| c | | 2023 |
| d | | 2019 |
| e | | Data classified according to ISIC Rev. 4. |
| f | | Exc. irrigation canals and landscaping care. |
| g | | Inc. taxes less subsidies on production and imports. |
| h | | Exc. publishing activities. Inc. irrigation canals. |
| i | | Inc. publishing activities and landscape care. Exc. repair of personal and household goods. |
| j | | Estimate. |
| k | | All urban consumers. |
| l | | 2024 |
| m | | Data refers to a 5-year period preceding the reference year. |
| n | | Calculated by the UN Statistics Division. |
| o | | For statistical purposes, the foreign-born population includes persons born in Puerto Rico, Guam, Northern Mariana Islands, and the United States Virgin Islands. |
| p | | The United States of America has also offered temporary status in certain circumstances to people in need of international protection. UNHCR is in discussions with the U.S. government about how to best reflect such datapoints for all relevant populations in future reporting cycles. |
| q | | Break in the time series. |
| r | | Data are based on SHA2011. |
| s | | 2022 |
| t | | Total refers to all voting members of the House of Representatives. |
| u | | Data at 1 January of the reporting year. |
| v | | Population aged 3 years and over. |
| w | | Users in the last 6 months. |
| x | | Do not correspond exactly to Frascati Manual recommendations. |
| y | | Provisional data. |
| z | | 2021 |