Its principal branches are from Peterborough to Spalding, Boston, Louth and Grimsby; and from Grantham to Sleaford and Boston, and to Lincoln, and Boston to Lincoln.
Canals connect Louth with the Humber, Sleaford with the Witham, and Grantham with the Trent near Nottingham; but the greater rivers and many of the drainage cuts are navigable, being artificially deepened and embanked.
- Municipal boroughs - Grimsby, a county borough (pop. 63,138), Lincoln, a city and county borough and the county town (48,784), Louth (9518).
In the Parts of Lindsey the county boroughs of Grimsby and Lincoln have each a separate commission of the peace and a separate court of quarter sessions, while the municipal borough of Louth has a separate commission of the peace, and there are 14 petty sessional divisions.
For parliamentary purposes the county is divided into seven divisions, namely, West Lindsey or Gainsborough, North Lindsey or Brigg, East Lindsey or Louth, South Lindsey or Horncastle, North Kesteven or Sleaford, South Kesteven or Stamford, and Holland or Spalding, and the parliamentary boroughs of Boston, Grantham, Grimsby and Lincoln, each returning one member.