Places of birth
Data about Long Island from the Census Bureau's 2008-2010 American Community Survey. Some towns are not listed because the number of residents surveyed was too small. Also, because this information is based on surveys, there is a different margin of error for each statistic. A complete listing of those margins and of all the data from Long Island, including information from 45 communities with populations of 20,000 or more, is available on this PDF.
| Location | Total population | In US | In NYS | Other state | Puerto Rico or other | Foreign born |
| Nassau County | 1,332,821 | 79.0 | 71.7 | 6.2 | 1.2 | 21.0 |
| Suffolk County | 1,487,286 | 85.6 | 76.7 | 7.4 | 1.6 | 14.4 |
| Glen Cove City | 26,819 | 69.3 | 61.4 | 6.3 | 1.5 | 30.7 |
| Hempstead Town | 755,891 | 78.4 | 71.0 | 6.2 | 1.3 | 21.6 |
| Long Beach City | 33,304 | 84.7 | 71.6 | 11.2 | 1.9 | 15.3 |
| North Hempstead Town | 224,774 | 72.7 | 64.8 | 6.8 | 1.0 | 27.3 |
| Oyster Bay Town | 292,033 | 85.7 | 79.7 | 5.1 | 0.9 | 14.3 |
| Babylon Town | 213,457 | 83.6 | 75.8 | 6.4 | 1.4 | 16.4 |
| Brookhaven Town | 483,001 | 88.9 | 80.3 | 7.2 | 1.4 | 11.1 |
| East Hampton Town | 22,047 | 75.2 | 58.1 | 16.0 | 1.0 | 24.8 |
| Huntington Town | 202,606 | 85.5 | 76.4 | 7.8 | 1.3 | 14.5 |
| Islip Town | 334,406 | 80.3 | 71.9 | 5.9 | 2.5 | 19.7 |
| Riverhead Town | 33,013 | 87.9 | 75.7 | 11.3 | 0.9 | 12.1 |
| Smithtown Town | 117,637 | 93.4 | 86.5 | 6.4 | 0.6 | 6.6 |
| Southampton Town | 56,634 | 82.3 | 66.0 | 14.6 | 1.6 | 17.7 |
| Southold Town | 21,869 | 90.0 | 75.1 | 13.5 | 1.4 | 10.0 |