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| Component Change History |
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| Jun 1981 |
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| - | | New SMSA: Portsmouth-Dover-Rochester, NH SMSA |
| - | | Berwick town (in York County, ME) included as original SMSA component |
| - | | Eliot town (in York County, ME) included as original SMSA component |
| - | | Kittery town (in York County, ME) included as original SMSA component |
| - | | South Berwick town (in York County, ME) included as original SMSA component |
| - | | York town (in York County, ME) included as original SMSA component |
| - | | Greenland town (in Rockingham County, NH) included as original SMSA component |
| - | | Hampton town (in Rockingham County, NH) included as original SMSA component |
| - | | New Castle town (in Rockingham County, NH) included as original SMSA component |
| - | | Newfields town (in Rockingham County, NH) included as original SMSA component |
| - | | Newington town (in Rockingham County, NH) included as original SMSA component |
| - | | Newmarket town (in Rockingham County, NH) included as original SMSA component |
| - | | North Hampton town (in Rockingham County, NH) included as original SMSA component |
| - | | Portsmouth city (in Rockingham County, NH) included as original SMSA component |
| - | | Rye town (in Rockingham County, NH) included as original SMSA component |
| - | | Barrington town (in Strafford County, NH) included as original SMSA component |
| - | | Dover city (in Strafford County, NH) included as original SMSA component |
| - | | Durham town (in Strafford County, NH) included as original SMSA component |
| - | | Farmington town (in Strafford County, NH) included as original SMSA component |
| - | | Lee town (in Strafford County, NH) included as original SMSA component |
| - | | Madbury town (in Strafford County, NH) included as original SMSA component |
| - | | Rochester city (in Strafford County, NH) included as original SMSA component |
| - | | Rollinsford town (in Strafford County, NH) included as original SMSA component |
| - | | Somersworth city (in Strafford County, NH) included as original SMSA component |
| - | | Dover, NH designated as original central city of new SMSA |
| - | | Portsmouth, NH designated as original central city of new SMSA |
| - | | Rochester, NH designated as original central city of new SMSA |
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| Jun 1983 |
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| - | | North Berwick town (in York County, ME) added |
| - | | Ogunquit town (in York County, ME) added |
| - | | Wells town (in York County, ME) added |
| - | | Brentwood town (in Rockingham County, NH) added to Lawrence-Haverhill, MA-NH PMSA in Boston-Lawrence-Salem, MA-NH CMSA |
| - | | East Kingston town (in Rockingham County, NH) added to Lawrence-Haverhill, MA-NH PMSA in Boston-Lawrence-Salem, MA-NH CMSA |
| - | | Exeter town (in Rockingham County, NH) added |
| - | | Stratham town (in Rockingham County, NH) added |
| - | | Milton town (in Strafford County, NH) added |
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| Dec 1992 |
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| - | | Portsmouth, NH transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA, designated as central city of PMSA |
| - | | Rochester, NH transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA, designated as central city of PMSA |
| - | | Portsmouth-Dover-Rochester, NH MSA abolished |
| - | | Berwick town (in York County, ME) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Eliot town (in York County, ME) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Kittery town (in York County, ME) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | North Berwick town (in York County, ME) deleted, reverted to nonmetro status |
| - | | Ogunquit town (in York County, ME) deleted, reverted to nonmetro status |
| - | | South Berwick town (in York County, ME) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Wells town (in York County, ME) deleted, reverted to nonmetro status |
| - | | York town (in York County, ME) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Brentwood town (in Rockingham County, NH) added to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA, transferred from Lawrence-Haverhill, MA-NH PMSA in Boston-Lawrence-Salem, MA-NH CMSA |
| - | | East Kingston town (in Rockingham County, NH) added to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA, transferred from Lawrence-Haverhill, MA-NH PMSA in Boston-Lawrence-Salem, MA-NH CMSA |
| - | | Epping town (in Rockingham County, NH) added to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Exeter town (in Rockingham County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Greenland town (in Rockingham County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Hampton town (in Rockingham County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Hampton Falls town (in Rockingham County, NH) added to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Kensington town (in Rockingham County, NH) added to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | New Castle town (in Rockingham County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Newfields town (in Rockingham County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Newington town (in Rockingham County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Newmarket town (in Rockingham County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | North Hampton town (in Rockingham County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Portsmouth city (in Rockingham County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Rye town (in Rockingham County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Stratham town (in Rockingham County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Barrington town (in Strafford County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Dover city (in Strafford County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Durham town (in Strafford County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Farmington town (in Strafford County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Lee town (in Strafford County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Madbury town (in Strafford County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Milton town (in Strafford County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Rochester city (in Strafford County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Rollinsford town (in Strafford County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Somersworth city (in Strafford County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Dover, NH no longer designated as central city |
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| Jun 1993 |
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| - | | PMSA reestablished: Portsmouth-Rochester, NH-ME PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Berwick town (in York County, ME) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Eliot town (in York County, ME) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Kittery town (in York County, ME) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | South Berwick town (in York County, ME) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | York town (in York County, ME) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Brentwood town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | East Kingston town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Epping town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Exeter town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Greenland town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Hampton town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Hampton Falls town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Kensington town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | New Castle town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Newfields town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Newington town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Newmarket town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | North Hampton town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Portsmouth city (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Rye town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Stratham town (in Rockingham County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Barrington town (in Strafford County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Dover city (in Strafford County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Durham town (in Strafford County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Farmington town (in Strafford County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Lee town (in Strafford County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Madbury town (in Strafford County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Milton town (in Strafford County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Rochester city (in Strafford County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Rollinsford town (in Strafford County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Somersworth city (in Strafford County, NH) included as original component of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Portsmouth, NH designated as original central city of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
| - | | Rochester, NH designated as original central city of reestablished PMSA, transferred from Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
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| Jun 2003 |
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| - | | Counties instead of cities and towns became the basic geographic unit of core based statistical areas in New England |
| - | | Title of Portsmouth-Rochester, NH-ME PMSA in Boston-Worcester-Lawrence, MA-NH CMSA changed to Rockingham County-Strafford County, NH Metro Division in Boston-Cambridge-Quincy, MA-NH Metro Area in Boston-Worcester-Manchester, MA-NH CSA |
| - | | Rockingham County, NH included as original county component of Metro Division |
| - | | Strafford County, NH included as original county component of Metro Division |
| - | | Portsmouth, NH no longer designated as principal/central city |
| - | | Rochester, NH no longer designated as principal/central city |
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