Available Themes

Click on the hyperlinks for direct access to key graphs and tables.

• Total Population 1911 to 1961: Population grew from 2,419 in 1911 to 6,935 in 1961.
• Age Structure, in 5-year bands, from 1911 to 1971: Population pyramids, using 5-year age groups.
• Infant Mortality Rate 1911 to 1973: The highest rate recorded was 90.91 infant deaths per thousand live births in 1911, and the lowest was 0. in 1969.

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
WELWYN	Preferred	English			F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.
E170494	CASWEB identifiers for 1971 Local Govt Districts	English

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
HERTFORDSHIRE	Administrative County	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.

Boundary changes

This unit was affected by the following changes:

Date	Type of change	Other unit involved	Area transferred	Authority
01 Apr 1927	was reduced to create	WELWYN GARDEN CITY UD	Welyn Garden City CP Area: 2460 acres.	1931 Census of England and Wales, Table 4, 'Intercensal Changes in Boundaries, 1921-31'.; M. of H. Order No. 71611-The Hertfordshire (Welwyn Garden City UD) Confirmation Order, 1927
01 Apr 1935	was reduced to enlarge	WELWYN GARDEN CITY UD	part of Welyn CP Area: 1 acres. Population in 1931: 4.	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. 80108. The County of Hertford Review Order, 1935
01 Oct 1951	was reduced to enlarge	WELWYN GARDEN CITY UD	part of Welwyn CP Area: 122 acres.	1961 Census of England and Wales, Table 4, 'Intercensal Changes of Boundary (between 8th April, 1951 and 23rd April, 1961)', for 'LAA, CP'.; M. of Local Government and Planning Order No. 1149. The County of Hertford (Welwyn Garden City U.D.) Confirmation Order, 1951
01 Apr 1964	was enlarged by gaining part of	HERTFORD RD	part of Tewin CP Area: 1 acres.	1971 Census of England and Wales, Table 4, 'Intercensal changes of Boundary (between 23rd April, 1961, and 25th April, 1971)', for 'AC, LAA, CP, NT'.; M. of H. and Local Government Order No. 14582. The Hertfordshire (Hertford and Welwyn R.Ds.) Confirmation Order, 1964

Lower level units

This unit contained the following units:

Name	Type	Start	End	Authority
AYOT ST LAWRENCE CP/AP	Parish-level Unit			F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 233.
AYOT ST PETER AP/CP	Parish-level Unit			F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 233.
DIGSWELL CP/AP	Parish-level Unit			F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 235.
WELWYN AP/CP	Parish-level Unit			F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 245.
WELWYN GARDEN CITY CP	Parish-level Unit	1921	1927	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 245.