The ancient parish, was originally dedicated to St Mary, but in 1747 it was rededicated to St John. It was in the Diocese of London. From 1852, as the population of Hampstead increased, a number of new parishes were formed:
In addition, as the population of neighbouring areas increased, parts of Hampstead parish were included in new parishes:
All Souls, St John's Wood in 1865 with parts of All Saints, St John's Wood
St Augustine, Kilburn in 1870 with parts of St Mark, Marylebone and St Saviour, Paddington
Coat of arms
The arms were granted in 1931, and are based on a device used by the Hampstead Vestry without authority, and adopted by the Council on its formation in 1900. The mitre stands for the Westminster Abbey, to which the Manor of Hampstead was granted by Ethelred the Unready in 986, and remained in its possession until 1539. The fleurs-de-lys and stag's head are from the arms of the Hickes family, one of whom, Viscount Camden, purchased the Manor. On his death in 1629 it passed to the Noel family from whose arms are taken the fretty chief. The Manor was sold to Sir William Langthorne in 1707, who is represented by the white cross and red fleurs-de-lys from his arms. The holly is from the seal of the old Hampstead Vestry, which grows profusely in the area. Charges from these arms were used, together with charges from the coats of arms of Holborn and of St. Pancras, when the new coat of arms of the London Borough of Camden was designed in 1965. The former coat of arms can still be seen on Hampstead War Memorial.
Population and area
The metropolitan borough was conterminous with the Vestry authority, when it was formed in 1900. Statistics compiled by the London County Council, in 1901 to show the population growth in London, over the preceding century. Hampstead had an area of in 1901. The populations recorded in National Censuses were: Hampstead Vestry 1801-1899
Under the Metropolis Management Act 1855 any parish that exceeded 2,000 ratepayers was to be divided into wards; however the parish of St John Hampstead did not exceed this number so was not divided into wards. By 1873 its population had increased enough for the incorporated vestry to be divided into four wards : No. 1, No. 2, No. 3 and No. 4. In 1894 as its population had increased further so the incorporated vestry was re-divided into five wards : Town, Belsize, Adelaide, Kilburn and West End. The metropolitan borough was divided into seven wards for elections: Adelaide, Belsize, Central, Kilburn, Priory, Town and West End.