Available Themes

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

• Total Population 1911 to 1961: Population grew from 311,284 in 1911 to 832,901 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 88.69 infant deaths per thousand live births in 1911, and the lowest was 13.39 in 1972.

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
HERTFORDSHIRE	Preferred	English			F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 623.
HERTFORD	Alternate	English			F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 623.

Unit associations

This unit was associated with the following other units:

Nature of association	Other unit involved	Type of unit	Authority
was preceded by	HERTFORDSHIRE	Ancient County	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
was preceded by	HERTFORDSHIRE	Poor Law/Registration County	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
was succeeded by	HERTFORDSHIRE	Modern (post 1974) County	Census of Population (2001 Key Statistics)

Unit history

This unit was part of the following units:

Name	Type	Start	End	Authority
ENGLAND Dep	Country	1889	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 623.

Boundary changes

This unit was affected by the following changes:

Date	Type of change	Other unit involved	Area transferred	Authority
01 Oct 1933	was reduced to enlarge	ESSEX	part of Ware RD 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. 77524. The Southend on Sea Extension Order, 1933; 18.9.1934. M. of H. Declaration under Section 145 of the LGA, 1933 (Alteration of Watercourses)
18 Sep 1934	was reduced to enlarge	ESSEX	part of Ware RD 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. Declaration under Section 145 of the LGA, 1933 (Alteration of Watercourses)
18 Sep 1934	was enlarged by gaining part of	ESSEX	part of Epping RD Area: 3 acres. Population in 1931: 14726.	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 under Section 145 of The L.G.A., 1933. (Alteration of Watercourses)
13 Aug 1947	was reduced to enlarge	BEDFORDSHIRE	part of Hitchin RD Area: 1 acres.	1951 Census of England and Wales, Table 5, 'Intercensal changes of Boundary (between 30th June, 1934, and 8th April, 1951)', for 'Administrative Areas (excluding Wards)'.; M. of H. Order under Section 145 of the LGA, 1933 (Alteration of watercourses)
13 Aug 1947	was enlarged by gaining part of	BEDFORDSHIRE	part of Biggleswade RD Area: 1 acres.	1951 Census of England and Wales, Table 5, 'Intercensal changes of Boundary (between 30th June, 1934, and 8th April, 1951)', for 'Administrative Areas (excluding Wards)'.; M. of H. Order under Section 145 of the LGA, 1933 (Alteration of water courses)
28 Sep 1956	was enlarged by gaining part of	BEDFORDSHIRE	part of Biggleswade RD Area: 1 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 H. and Local Government Declaration under Section 145 of the LGA, 1933 (Alteration of watercourses)
28 Sep 1956	was reduced to enlarge	BEDFORDSHIRE	part of Hitchin RD Area: 1 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 H. and Local Government Declaration under Section 145 of the LGA, 1933 (Alteration of watercourses)
01 Apr 1965	was reduced to create	BEDFORDSHIRE	part of Hemel Hempstead RD Area: 45 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'.; The Counties of Bedford and Buckingham (Leighton-Linslade) Order, 1965; The Cambridgeshire and Isle of Ely Order, 1964; The East Midland Counties Order, 1965; The Huntington and Peterborough Order, 1964
01 Apr 1965	was reduced to enlarge	BEDFORDSHIRE	part of Hemel Hempstead RD Area: 45 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'.; The Counties of Bedford and Buckingham (Leighton-Linslade) Order, 1965; The Cambridgeshire and Isle of Ely Order, 1964; The East Midland Counties Order, 1965; The Huntingdon and Peterborough Order, 1964
01 Apr 1965	was enlarged by gaining part of	BEDFORDSHIRE	parts of Biggleswade, Luton RDs Area: 75 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'.; The East Midland Counties Order, 1965; The London Government Act, 1963
01 Apr 1965	was abolished to create	GREATER LONDON	Barnet, East Barnet UDs Area: 2806 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'.; The London Government Act, 1963
01 Apr 1965	was enlarged by the abolition of	MIDDLESEX	Potters Bar UD Area: 2480 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'.; The East Midland Counties Order, 1965; The London Government Act, 1963

Lower level units

This unit contained the following units:

Name	Type	Start	End	Authority
BERKHAMPSTEAD RegD/PLU	Poor Law Union/Reg. District			Ministry of Health, Persons in Receipt of Poor-Law Relief (England and Wales) (H.M.S.O.)
BISHOPS STORTFORD RegD/PLU	Poor Law Union/Reg. District			Ministry of Health, Persons in Receipt of Poor-Law Relief (England and Wales) (H.M.S.O.)
BUNTINGFORD PLU	Poor Law Union/Reg. District			Ministry of Health, Persons in Receipt of Poor-Law Relief (England and Wales) (H.M.S.O.)
HATFIELD PLU	Poor Law Union/Reg. District			Ministry of Health, Persons in Receipt of Poor-Law Relief (England and Wales) (H.M.S.O.)
HEMEL HEMPSTEAD RegD/PLU	Poor Law Union/Reg. District			Ministry of Health, Persons in Receipt of Poor-Law Relief (England and Wales) (H.M.S.O.)
HERTFORD RegD/PLU	Poor Law Union/Reg. District			Ministry of Health, Persons in Receipt of Poor-Law Relief (England and Wales) (H.M.S.O.)
HITCHIN RegD/PLU	Poor Law Union/Reg. District			Ministry of Health, Persons in Receipt of Poor-Law Relief (England and Wales) (H.M.S.O.)
ST ALBANS RegD/PLU	Poor Law Union/Reg. District			Ministry of Health, Persons in Receipt of Poor-Law Relief (England and Wales) (H.M.S.O.)
WARE RegD/PLU	Poor Law Union/Reg. District			Ministry of Health, Persons in Receipt of Poor-Law Relief (England and Wales) (H.M.S.O.)
WATFORD RegD/PLU	Poor Law Union/Reg. District			Ministry of Health, Persons in Receipt of Poor-Law Relief (England and Wales) (H.M.S.O.)
ASHWELL RD	Local Government District	1894	1935	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
BALDOCK UD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
BARNET RD	Local Government District	1894	1941	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
BARNET UD	Local Government District	1894	1965	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
BERKHAMSTED RD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
BERKHAMSTED UD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
BISHOPS STORTFORD UD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.
BISHOPS STORTFORD RD	Local Government District	1894	1895	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.
BRAUGHING RD	Local Government District	1935	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
BUNTINGFORD RD	Local Government District	1894	1935	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
BUSHEY UD	Local Government District	1906	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
CHESHUNT UD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
CHORLEYWOOD UD	Local Government District	1913	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
EAST BARNET UD	Local Government District	1894	1965	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
ELSTREE RD	Local Government District	1941	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
HADHAM RD	Local Government District	1895	1935	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
HARPENDEN UD	Local Government District	1898	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
HATFIELD RD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
HEMEL HEMPSTEAD MB	Local Government District	1898	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 624.
HEMEL HEMPSTEAD RD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
HERTFORD MB	Local Government District	1835	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 624.
HERTFORD RD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
HITCHIN RD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
HITCHIN UD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
HODDESDON UD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
KENSWORTH RD	Local Government District	1894	1897	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 238.
LETCHWORTH UD	Local Government District	1919	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
POTTERS BAR UD	Local Government District	1965	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 651.
RICKMANSWORTH UD	Local Government District	1898	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
ROYSTON RD	Local Government District	1894	1897	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 53.
ROYSTON UD	Local Government District	1897	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
SAWBRIDGEWORTH UD	Local Government District	1901	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.
ST ALBANS RD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 626.
ST ALBANS MB	Local Government District	1835	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 624.
STEVENAGE UD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.
STUDHAM RD	Local Government District	1894	1897	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 243.
TRING UD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.
WARE RD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.
WARE UD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.
WATFORD UD/MB	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.
WATFORD RD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.
WELWYN RD	Local Government District	1894	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.
WELWYN GARDEN CITY UD	Local Government District	1927	1974	F. Youngs, Local Administrative Units: Southern England (London: Royal Historical Society, 1979), p. 627.
HARLOW	New Town			1971 Census of England and Wales, Table 25, 'Enumerated Households by tenure and household amenities', for 'AC, CB, Urban areas with populations of 50,000 or more, Aggregates of MB and UD and aggregates of RD, NT and Con Centres. Urban Areas with populations of less than 50,000 and RD'.
HATFIELD	New Town			London Gazette, No. 38299, p. 3136, 25 May 1948; Hatfield New Town (Designation) Order, 1948.
HEMEL HEMPSTEAD	New Town			London Gazette, No. 37875, p. 664, 7 February 1947; Hemel Hempstead New Town (Designation) Order, 1947.
STEVENAGE	New Town			London Gazette, No. 37785, p. 5536, 12 November 1946; Stevenage New Town (Designation) Order, 1946.
WELWYN GARDEN CITY	New Town			London Gazette, No. 38299, p. 3136, 25 May 1948; Welwyn Garden City New Town (Designation) Order, 1948.
BARNET	Urban Labour Market			Great Britain Historical GIS Project
BERKHAMSTED	Urban Labour Market			Great Britain Historical GIS Project
BISHOPS STORTFORD	Urban Labour Market			Great Britain Historical GIS Project
HARPENDEN	Urban Labour Market			Great Britain Historical GIS Project
HATFIELD	Urban Labour Market			Great Britain Historical GIS Project
HEMEL HEMPSTEAD	Urban Labour Market			Great Britain Historical GIS Project
HERTFORD	Urban Labour Market			Great Britain Historical GIS Project
HITCHIN	Urban Labour Market			Great Britain Historical GIS Project
HODDESDON	Urban Labour Market			Great Britain Historical GIS Project
LETCHWORTH	Urban Labour Market			Great Britain Historical GIS Project
RICKMANSWORTH	Urban Labour Market			Great Britain Historical GIS Project
ST ALBANS	Urban Labour Market			Great Britain Historical GIS Project
STEVENAGE	Urban Labour Market			Great Britain Historical GIS Project
WALTHAM CROSS	Urban Labour Market			Great Britain Historical GIS Project
WATFORD	Urban Labour Market			Great Britain Historical GIS Project
WELWYN	Urban Labour Market			Great Britain Historical GIS Project