Date: Pre-1929
Boundary: District designations as they appear in early census records
Date: 1930-1975
Boundary: Landward districts were created as a result of the Local Government (Scotland) Act 1929. They were formed by grouping parishes outside of Burghs (areas known as Landward) into districts with elected councils.
Date: 1975-1996
Boundary: Region and district designations as a result of the 1973 Local Government (Scotland) Act, with OPR parishes that fell into each district. The changes took effect on 15 May 1975, and were in place until 1996.
Date: Changes made as a result of the Local Government (Scotland) Act, 1889. Changes went into effect on 15 May 1891.
Summary: No parish boundaries altered. County boundary extended to include parish of New Kilpatrick (from Stirlingshire) and the town of Milngavie.
Details:
Orders made by the Boundary Commissioners for Scotland under Section 49 of the Local Government (Scotland) Act, 1889. Orders shall come into operation for the purposes of School Board elections on the 1st day of February 1891, and for all other purposes on the 15th day of May 1891.
Parish of New or East Kilpatrick, Counties of Dunbarton and Stirling
This parish was situated partly in the county of Dunbarton and partly in the county of Stirling. The parish was placed wholly within the county of Dunbarton, no change made on the parish boundaries.
Transferred from county of Stirling to the county of Dunbarton, parish of New Kilpatrick:
The Police Burgh of Milngavie
Barloch - Mrs. Grace Holmes or M'Intosh, Miss J. H. Holmes, and Miss Agnes Longmuir (Proprietors)
Lower Barloch - Mrs. Grace Holmes or M'Intosh, Miss J. H. Holmes, and Miss Agnes Longmuir (Proprietors)
Bearsden, Dene Hollow - Alexander Simpson (Proprietor)
Bearden, West Chapelton - William Barr (Proprietor)
Boclair - Sir G. Campbell of Succoth (Proprietor)
Temple of Boclair (Proprietor)
East Milliken (Proprietor)
West Milliken (Proprietor)
Summerstone (Proprietor)
Woodlands (Proprietor)
Chapelton - Rev. J. E. C. Colquhoun of Killermont (Proprietor)
Kissington - Rev. J. E. C. Colquhoun of Killermont (Proprietor)
Templehill - Rev. J. E. C. Colquhoun of Killermont (Proprietor)
Woodlands - Rev. J. E. C. Colquhoun of Killermont (Proprietor)
Clober Road - Robert Learmont and Joseph Kaye Fairlie (Proprietor)
Clober - Alexander Dunlop of Clober (Proprietor)
Cloberfield - Alexander Dunlop of Clober (Proprietor)
Craigdow - A. Campbell Douglas of Mains (Proprietor)
Keyston - A. Campbell Douglas of Mains (Proprietor)
Mains - A. Campbell Douglas of Mains (Proprietor)
Milngavie Parks - A. Campbell Douglas of Mains (Proprietor)
Craigholm - Andrew Gray (Proprietor)
Dougalston - Thomas Ripley Ker of Dougalston (Proprietor)
Clober - Thomas Ripley Ker of Dougalston (Proprietor)
Crossviegate - Thomas Ripley Ker of Dougalston (Proprietor)
High Garwhitter - Thomas Ripley Ker of Dougalston (Proprietor)
Hillend and Ballflewr's - Thomas Ripley Ker of Dougalston (Proprietor)
Drumclog, and part of Hilton - Duke of Montrose (Proprietor)
Drumclog - Alexander Graham Barns Graham of Craigallian (Proprietor)
Bearsden
Police Burgh: 1958
Parish: New Kilpatrick
Region: (Before 1975): Strathclyde
District: (Before 1975) Bearsden and Milngavie
Clydebank
Police Burgh: 1886
Large Burgh: 1929
Parish: Old Kilpatrick
Region (Before 1975): Strathclyde
District (Before 1975): Clydebank
Dumbarton
Royal Burgh: 1532
Large Burgh: 1929
Parish: Dunbarton
Region (Before 1975): Strathclyde
District (Before 1975): West Dunbartonshire
Cove and Kilcreggan
Police Burgh: 1865
Small Burgh: 1929
Parish: Rosneath
Region (Before 1975): Strathclyde
District (Before 1975): Dumbarton
Cumbernauld
Burgh of Barony: 1649-1893
Small Burgh: 1968
Parish: Cumbernauld
Region (Before 1975): Strathclyde
District (Before 1975): Cumbernauld and Kilsyth
Helensburgh
Burgh of Barony: 1802
Small Burgh: 1929
Parish: Row
Region (Before 1975): Strathclyde
District (Before 1975): Dumbarton
Kirkintilloch
Burgh of Barony: 1526
Small Burgh: 1929
Parish: Kirkintilloch
Region (Before 1975): Strathclyde
District (Before 1975): Strathkelvin
Milngavie
Burgh of Regality: 1648
Police Burgh: 1875
Small Burgh: 1929
Parish: New Kilpatrick
Region (Before 1975): Strathclyde
District (Before 1975): Bearsden and Milngavie
See Parish Page Sources for all source information and links.

Location of Dunbartonshire
View more maps at Wikipedia