Thurlby by Bourne is a village and civil parish in the South Kesteven District of Lincolnshire, England. It is situated just west of the A15 road, 2 miles (3 km) south from the town of Bourne, and on the edge of the Lincolnshire Fens. The parish had a population of 2,136 at the 2001 census and this had increased by hundreds by the time of the 2011 census, because of a rapid development across the village.
It is quite often simply referred to as Thurlby, but Thurlby by Bourne has been employed here to distinguish it from other villages in Lincolnshire with the same name, paricularly Thurlby in North Kesteven and Thurlby in East Lindsey. Thurlby and the hamlet of Northorpe in Thurlby to its north are conjoined. Northorpe is also to be found as a hamlet near Donington in South Holland and near Gainsborough in West Lindsey. There are two further hamlets, Obthorpe and Kate's Bridge. There are very short articles on Northorpe and on Kate's Bridge in Wikipedia.
Lincolnshire is very low-lying and land had to be drained for agriculture to be successful. The larger drainage channels, many of which are parallel to each other, became boundaries between parishes. Many parishes are long and thin for this reason.
There is much fenland in Lincolnshire, particularly in the Boston and Horncastle areas. Fenlands tended to be extraparochial before the mid 1850s, and although many sections were identified with names and given the title "civil parish", little information has been found about them. Many appear to be abolished in 1906, but the parish which adopts them is not given in A Vision of Britain through Time. Note the WR category Lincolnshire Fenland Settlements which is an attempt to organize them into one list.
From 1889 until 1974 Lincolnshire was divided into three administrative counties: Parts of Holland, Parts of Kesteven and Parts of Lindsey. These formal names do not fit with modern grammatical usage, but that is what they were, nonetheless. In 1974 the northern section of Lindsey, along with the East Riding of Yorkshire, became the short-lived county of Humberside. In 1996 Humberside was abolished and the area previously in Lincolnshire was made into the two "unitary authorities" of North Lincolnshire and North East Lincolnshire. The remainder of Lincolnshire was divided into "non-metropolitan districts" or "district municipalities" in 1974. Towns, villages and parishes are all listed under Lincolnshire, but the present-day districts are also given so that places in this large county can more easily be located and linked to their wider neighbourhoods. See the WR placepage Lincolnshire, England and the smaller divisions for further explanation.