Ordnance Survey maps
Survey and revision dates for County Series mapping - England and Wales 1842-1952
Compiled with thanks from Richard Oliver's Ordnance Survey maps: a concise guide for historians, 3rd ed. (London: Charles Close, 2013).
- Dates in red with (m) indicate that the county meridian and its sheet lines changed from this time onwards.
- Dates in green with (p) indicate a partial revision of the county, with only some maps published.
- Dates in blue with (f) indicate that the 6" to the mile maps were published on full sheets rather than quarter sheets.
View Scottish County Series mapping dates.
| County | County Survey | 1st revision | 2nd revision | 3rd revision |
|---|---|---|---|---|
| Anglesey | 1886-87 | 1899 | 1913-23 | |
| Bedfordshire | 1876-82 | 1898-1900 | 1921-39 (p) | |
| Berkshire | 1866-83 (f) | 1897-99 | 1909-12 | 1919-42 (p) |
| Brecknockshire | 1874-88 | 1902-4 | 1913-27 (p) | |
| Buckinghamshire | 1867-81 (f) | 1897-99 | 1918-24 (p) | 1932-38 (p) |
| Caernarvonshire | 1885-88 | 1898-1900 | 1910-1914 | 1937-39 (p) |
| Cambridgeshire | 1876-86 | 1896-1901 | 1924-26 (p) | 1937-38 (p) |
| Cardiganshire | 1885-88 | 1900-4 | 1937-38 (p) | |
| Carmarthenshire | 1875-87 | 1903-6 | 1913-37 (p) | |
| Cheshire | 1870-75 (f) | 1896-98 | 1904-9 | 1924-37 (p) |
| Cornwall and Isles of Scilly | 1859-88 | 1905-7 | 1912-36 (p) | |
| Cumberland | 1859-65 (f) | 1897-1900 | 1922-24 (p) | |
| Denbighshire | 1870-75 (f) | 1897-99 | 1909-12 | 1937-39 (p) |
| Derbyshire | 1875-82 | 1896-1900 | 1912-21 (p) | 1937-38 (p) |
| Devon | 1855-89 | 1902-5 | 1912 (p) | 1932-39 (p) |
| Dorset | 1860-88 | 1900-1 | 1923-33 (p) | 1934-38 (p) |
| Durham | 1854-57 | 1894-97 | 1912-19 | 1937-39 (p) |
| Essex | 1862-76 (f) | 1893-6 | 1913-22 (m) | 1937-42 (p) |
| Flintshire | 1869-72 (f) | 1897-99 | 1909-11 | |
| Glamorgan | 1867-78 (f) | 1896-99 | 1913-1916 | 1935-43 (p) |
| Gloucestershire | 1873-84 | 1898-1902 | 1912-22 | 1936-39 (p) |
| Hampshire and Isle of Wight | 1856-75 (f) | 1894-97 | 1906-10 | 1922-43 (p) |
| Herefordshire | 1878-87 | 1901-4 | 1916-28 (p) | 1937 (p) |
| Hertfordshire | 1865-81 (f) | 1895-97 | 1912-23 | 1934-47 (p) |
| Huntingdonshire | 1884-87 | 1899-1901 | 1924-25 (p) | 1937 |
| Kent | 1858-73 (f) | 1893-97 | 1905-10 | 1929-40 (p) |
| Lancashire | 1842-93 (Note 1) | 1904-12 | 1915-18 (p) | 1924-35 (p) |
| Leicestershire | 1879-86 | 1899-1902 | 1912-30 (p) | 1937-39 (p) |
| Lincolnshire | 1883-88 | 1898-1906 | 1914-32 (p) | 1937-40 (p) |
| Isle of Man | 1866-69 (f) | |||
| London | 1862-72 (f) | 1891-95 | 1912-14 | 1934-37 |
| Merionethshire | 1873-88 | 1899-1900 | 1913-14 (p) | |
| Middlesex | 1862-72 (f) | 1891-95 | 1911-1913 | 1932-41 |
| Monmouthshire | 1875-85 (f) | 1898-1900 | 1915-20 | 1936-43 (p) |
| Montgomeryshire | 1874-87 | 1900-1 | 1924 | |
| Norfolk | 1879-86 | 1900-6 | 1925-27 | 1938-39 (p) |
| Northamptonshire | 1882-86 | 1898-1900 | 1919-38 (p) | 1937-38 (p) |
| Northumberland | 1855-84 | 1894-97 | 1913-23 (m) | 1936-40 (p) |
| Nottinghamshire | 1875-85 | 1897-99 | 1912-19 | 1937-40 (p) |
| Oxfordshire | 1872-80 (f) | 1897-1900 | 1910-20 (p) | 1932-39 (p) |
| Pembrokeshire | 1860-88 | 1904-6 | 1937 (p) | |
| Radnorshire | 1883-88 | 1901-4 | 1926-27 (p) | |
| Rutland | 1883-84 | 1899-1903 | 1928 (p) | |
| Shropshire | 1873-84 | 1899-1902 | 1924-26 (p) | 1937 (p) |
| Somerset | 1882-88 | 1900-3 | 1912-30 (p) | 1934-39 (p) |
| Staffordshire | 1861-1886 | 1897-1902 | 1912-23 | 1937-38 (p) |
| Suffolk | 1861-85 | 1900-4 | 1924-26 (p) | |
| Surrey | 1861-71 (f) | 1891-96 | 1910-13 | 1930-44 (p) |
| Sussex | 1869-75 | 1895-98 | 1907-10 | 1925-46 |
| Warwickshire | 1881-84 | 1898-1900 | 1912-26 (p) | 1936-39 (p) |
| Westmorland | 1856-60 (f) | 1896-98 | 1910-13 | 1938 (p) |
| Wiltshire | 1871-85 (f) | 1898-1900 | 1921-24 | 1936-43 (p) |
| Worcestershire | 1881-84 | 1898-1903 | 1913-26 (p) | 1937-38 (p) |
| Yorkshire | 1844-1893 (Note 2) | 1901-1914 | 1920-1935 (p) | 1932-38 (p) |