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| Component Change History |
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| Feb 1971 |
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| - | | New SMSA: Nashua, NH SMSA |
| - | | Hudson town (in Hillsborough County, NH) included as original SMSA component |
| - | | Nashua city (in Hillsborough County, NH) included as original SMSA component |
| - | | Nashua, NH designated as original central city of new SMSA |
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| Apr 1973 |
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| - | | Amherst town (in Hillsborough County, NH) added |
| - | | Merrimack town (in Hillsborough County, NH) added |
| - | | Milford town (in Hillsborough County, NH) added |
| - | | Londonderry town (in Rockingham County, NH) added to Manchester, NH SMSA |
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| Jun 1983 |
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| - | | Nashua, NH SMSA became Nashua, NH PMSA in Boston-Lawrence-Salem, MA-NH CMSA |
| - | | Brookline town (in Hillsborough County, NH) added |
| - | | Hollis town (in Hillsborough County, NH) added |
| - | | Litchfield town (in Hillsborough County, NH) added |
| - | | Mont Vernon town (in Hillsborough County, NH) added |
| - | | Wilton town (in Hillsborough County, NH) added |
| - | | Londonderry town (in Rockingham County, NH) added, transferred from Manchester, NH SMSA |
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| Dec 1992 |
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| - | | Greenville town (in Hillsborough County, NH) added |
| - | | Mason town (in Hillsborough County, NH) added |
| - | | New Ipswich town (in Hillsborough County, NH) added |
| - | | Londonderry town (in Rockingham County, NH) transferred to Boston, MA-NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA |
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| Jun 1993 |
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| - | | Londonderry town (in Rockingham County, NH) included as original component of reestablished Manchester, NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA, 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 |
| - | | Nashua, NH transferred to Manchester-Nashua, NH Metro Area in Boston-Worcester-Manchester, MA-NH CSA, designated as principal city of Metro Area |
| - | | Nashua, NH PMSA in Boston-Worcester-Lawrence, MA-NH CMSA abolished |
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