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Substantial Changes to Counties and County Equivalent Entities: 1970-Present

1970
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1970
Component ID: #ti781854577

Changes to Counties or County Equivalent Entities: 1970s

Changes to County Equivalent Entities in Alaska

  • The county equivalent entities in Alaska changed from Census Divisions in 1970 to Boroughs and Census Areas in 1980. The inventory and boundaries of the Alaska county-level entities changed substantially during the decade.
  • New entities created in Alaska are: Dillingham Census Area (02-070), North Slope Borough (02-185), and Valdez-Cordova Census Area (02-261).

Deleted county equivalent entities in Alaska

  • Angoon Division (02-030)
  • Barrow Division (02-040)
  • Cordova-McCarthy Division (02-080)
  • Kenai-Cook Inlet Division (02-120)
  • Kuskokwim Division (02-160)
  • Outer Ketchikan Division (02-190)
  • Prince of Wales Division (02-200)
  • Skagway-Yakutat Division (02-230)
  • Upper Yukon Division (02-250)
  • Valdez-Chitina-Whittier Division (02-260)

New Counties or County Equivalent Entities

  • Manassas (independent) city, Virginia (51-683):
    Changed from a town to a city and became independent of Prince William County (51-153) effective June 1, 1975; 1970 population: 9,164.
  • Manassas Park (independent) city, Virginia (51-685):
    Changed from a town to a city and became independent of Prince William County (51-153) effective May 1, 1975; 1970 population: 6,844.
  • Poquoson (independent) city, Virginia (51-735):
    Changed from a town to a city and became independent of York County (51-199) effective June 1, 1975; 1970 population: 5,441.

Deleted Counties or County Equivalent Entities

  • Washabaugh County, South Dakota (46-131):
    Combined into Jackson County (46-071) effective January 1, 1979.
  • Nansemond County, Virginia (51-123):
    Combined into Suffolk (independent) city (51-800) effective July 1, 1972.

Substantial County or County Equivalent Entity Boundary Changes

  • Jackson County, South Dakota (46-071):
    Added all of the former Washabaugh County (46-131), effective January 1, 1979.
  • Bedford County, Virginia (51-019):
    Part annexed to Lynchburg (independent) city (51-680), effective December 31, 1975; estimated population: 1,500.
  • Campbell County, Virginia (51-031):
    Part annexed to Lynchburg (independent) city (51-680) effective December 31, 1975; estimated population: 9,000.
  • Dinwiddie County, Virginia (51-053):
    Part annexed to Petersburg (independent) city (51-730) effective December 31, 1971; estimated population: 3,400.
  • Frederick County, Virginia (51-069):
    Part annexed to Winchester (independent) city (51-840) effective December 31, 1970; estimated population: 4,800.
  • Montgomery County, Virginia (51-121):
    Part annexed to Radford (independent) city (51-750) effective December 31, 1976; estimated population: 400.
  • Prince George County, Virginia (51-149):
    Part annexed to Petersburg (independent) city (51-730) effective December 31, 1975; estimated population: 4,700.
  • Prince William County, Virginia (51-153):
    Part taken when Manassas (51-683) and Manassas Park (51-685) became cities and separated from the county effective June 1, 1975, and May 1, 1975, respectively; 1970 population detached: 16,008.
  • Roanoke County, Virginia (51-161):
    Part annexed to Roanoke (independent) city (51-770) effective December 31, 1975; estimated population: 13,500.
  • Washington County, Virginia (51-191):
    Part annexed to Bristol (independent) city (51-520); estimated population: 4,800.
  • York County, Virginia (51-199):
    Part taken when Poquoson (51-735) became a city and separated from the county effective June 1, 1975; 1970 population detached: 5,441.
  • Bristol (independent) city, Virginia (51-520):
    Annexed part of Washington County (51-191); estimated population: 4,800.
  • Lynchburg (independent) city, Virginia (51-680):
    Annexed part of Bedford County (51-019) effective December 31, 1975; estimated population: 1,500. Annexed part of Campbell County (51-031) effective December 31, 1975; estimated population: 9,000.
  • Petersburg (independent) city, Virginia (51-730):
    Annexed part of Dinwiddie County (51-053) effective December 31, 1971; estimated population: 3,400. Annexed part of Prince George County (51-149) effective December 31, 1971; estimated population: 4,700.
  • Radford (independent) city, Virginia (51-750):
    Annexed part of Montgomery County (51-121) effective December 31, 1976; estimated population: 400.
  • Roanoke (independent) city, Virginia (51-770):
    Annexed part of Roanoke County (51-161) effective December 31, 1975; estimated population: 13,500.
  • Suffolk (independent) city, Virginia (51-800):
    Added all of former Nansemond County (51-123) effective July 1, 1972.
  • Winchester (independent) city, Virginia (51-840):
    Annexed part of Frederick County (51-069) effective December 31, 1970; estimated population: 4,800.

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