Figure 1: Percentage of U.S. Population Covered in the 2015 NIS by Census Division and Region, Calculated using the Estimated U.S. Population on July 1, 2015
| Census Division | Population of NIS (millions) | U.S. Population (millions) |
|---|---|---|
| New England | 13,380,118 (91.0%) | 14,710,229 |
| Middle Atlantic | 41,474,508 (100.0%) | 41,474,508 |
| East North Central | 46,742,511 (100.0%) | 46,742,511 |
| West North Central | 21,095,876 (100.0%) | 21,095,876 |
| South Atlantic | 62,248,332 (98.5%) | 63,192,408 |
| East South Central | 14,009,057 (74.3%) | 18,862,932 |
| West South Central | 38,983,866 (100.0%) | 38,983,866 |
| Mountain | 21,839,730 (93.0%) | 23,492,558 |
| Pacific | 52,341,730 (100.0%) | 52,341,730 |
| Census Region | Population of NIS (millions) | U.S. Population (millions) |
| Northeast | 54,854,626 (97.6%) | 56,184,737 |
| Midwest | 67,838,387 (100.0%) | 67,838,387 |
| South | 115,241,255 (95.2%) | 121,039,206 |
| West | 74,181,460 (97.8%) | 75,834,288 |
| United States | 312,115,728 (97.3%) | 320,896,618 |