Available Themes

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• Total Population 1801 to 1951: Population grew from 769 in 1801 to 22,283 in 1951.
• Occupational Structure in 1831: Out of 289 males aged 20 and over, 140 were Agricultural Labourers.
• Occupational Structure in 1881:

Here we are presenting statistics for a historical unit, which may have changed its boundaries significantly during the period covered.

Alternative names

The following alternative names exist:

Name	Status	Language	Start	End	Authority
LLANDRILLO YN RHOS	Preferred	Welsh			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 108.
DINERTH	Preferred	English			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 108.
LLAN DRILLO YN RHOS	Alternate	English			1831 Census of Great Britain, Table [1], 'Population Abstract'.
LLANDRILLOYNRHOS	Alternate	English			1871 Census of England and Wales, Table 4, 'Area; Houses and Inhabitants, 1861 and 1871, in the Parishes and Places comprised in each Superintendent Registrar's District'.

Unit associations

We know of no associations with other units.

Unit history

This unit was part of the following units:

Name	Type	Start	End	Authority
CAERNARVONSHIRE	Ancient County			1831 Census of Great Britain, Table [1], 'Population Abstract'.
DENBIGHSHIRE	Ancient County			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 108.
CONWAY RegD/PLU	Poor Law Union/Reg. District			1911 Census of England and Wales, Table 5, 'Registration Counties, Districts and Sub-districts with their constituent civil parishes. - Urban or Rural District in which each parish is situated; Area; families or separate occupiers, and population, 1901 and 1911; and population enumerated in Institutions, large establishments, and on vessels, &c., 1911'.
COLWYN BAY MB/UD	Local Government District			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 108.
COLWYN BAY	Registration sub-District			1911 Census of England and Wales, Table 5, 'Registration Counties, Districts and Sub-districts with their constituent civil parishes. - Urban or Rural District in which each parish is situated; Area; families or separate occupiers, and population, 1901 and 1911; and population enumerated in Institutions, large establishments, and on vessels, &c., 1911'.
COLWYN BAY AND COLWYN USD	Sanitary District			1891 Census of England and Wales, Table 4, 'Area and Population in Rural Sanitary Districts'.
CREUDDYN Cmt/Hundred	Ancient District			1831 Census of Great Britain, Table [1], 'Population Abstract'.
CREUDDYN	Registration sub-District			1881 Census of England and Wales, Table 4, 'Area, Houses, and Population of Civil Parishes in the several Registration Sub-Districts in 1871 and 1881'.
ISDULAS Hundred	Ancient District			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 108.
UWCH DULAS Cmt	Ancient District			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 108.

Boundary changes

This unit was affected by the following changes:

Date	Type of change	Other unit involved	Area transferred	Authority
17 Jun 1879	was reduced to enlarge	EIRIAS CP/Tn	Township of Colwyn Houses in 1891: 58.	1891 Census of England and Wales, Table 14, 'Changes in the Areas of Civil Parishes effected by Local Government Board Orders under the Provisions of the Divided Parishes Acts of 1876 and 1879, or by the Act of 1882'.; LGBO 7663
17 Mar 1879	was enlarged by gaining part of	EIRIAS CP/Tn	Rhosfynach or Glan Y Mor Houses in 1891: 12.	1891 Census of England and Wales, Table 14, 'Changes in the Areas of Civil Parishes effected by Local Government Board Orders under the Provisions of the Divided Parishes Acts of 1876 and 1879, or by the Act of 1882'.; LGBO 7581
17 Mar 1879	was reduced to enlarge	LLYS FAEN CP/AP	(11 Parts)	1891 Census of England and Wales, Table 14, 'Changes in the Areas of Civil Parishes effected by Local Government Board Orders under the Provisions of the Divided Parishes Acts of 1876 and 1879, or by the Act of 1882'.; LGBO 7666
01 Apr 1927	was enlarged by the abolition of	EIRIAS CP/Tn	Area: 960 acres.	1931 Census of England and Wales, Table 4, 'Intercensal Changes in Boundaries, 1921-31'.; The Colwyn Bay UD Council Act, 1926
01 Apr 1927	was enlarged by the abolition of	LLYS FAEN CP/AP	Area: 1892 acres.	1931 Census of England and Wales, Table 4, 'Intercensal Changes in Boundaries, 1921-31'.; The Colwyn Bay UD Council Act, 1926
01 Apr 1935	was reduced to enlarge	ABERGELE URBAN CP	Area: 1 acres. Population in 1931: 0.	1931 Census of England and Wales, Table B, 'Areas altered between 26th April, 1931 and 30th June, 1934, showing constitution as at the latter date, in terms of constitution as at the former date, together with particulars of acreage and population'.; M. of H. Order No. 78577. The County of Denbigh Review Order, 1934
01 Apr 1935	was enlarged by the abolition of	LLANDDULAS CP/AP	Area: 2 acres. Population in 1931: 22.	1931 Census of England and Wales, Table B, 'Areas altered between 26th April, 1931 and 30th June, 1934, showing constitution as at the latter date, in terms of constitution as at the former date, together with particulars of acreage and population'.; M. of H. Order No. 78577. The County of Denbigh Review Order, 1934
01 Apr 1935	was enlarged by gaining part of	LLANEILIAN YN RHOS AP/CP	Area: 185 acres. Population in 1931: 30.	1931 Census of England and Wales, Table B, 'Areas altered between 26th April, 1931 and 30th June, 1934, showing constitution as at the latter date, in terms of constitution as at the former date, together with particulars of acreage and population'.; M. of H. Order No. 78577. The County of Denbigh Review Order, 1934
01 Apr 1935	was reduced to enlarge	LLANEILIAN YN RHOS AP/CP	Area: 1560 acres. Population in 1931: 115.	1931 Census of England and Wales, Table B, 'Areas altered between 26th April, 1931 and 30th June, 1934, showing constitution as at the latter date, in terms of constitution as at the former date, together with particulars of acreage and population'.; M. of H. Order No. 78577. The County of Denbigh Review Order, 1934

Lower level units

This unit contained the following units:

Name	Type	Start	End	Authority
CAPEL TRILLO Ch	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 32.
CILGWYN Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 43.
COLWYN Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 47.
DINERTH Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 58.
EIRIAS CP/Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 65.
GWLYPDREF Hmlt	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 84.
ISALLT Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 94.
IS Y FFORDD Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 96.
MOCHDRE Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 158.
PANT Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 170.
PENMAEN Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 174.
RHIW Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 187.
RHOSYMYNACH Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 190.
RHWNGYDDWYFFORDD Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 191.
SERIOR Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 197.
TRER PANT Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 214.