The River Tweed (156 Kilometers long) flows primarily through the Borders[?] region of Scotland. Its lower reaches mark the Scots border with England for 27 kilometers near Berwick-upon-Tweed.
... out of which 24.1% have children under the age of 18 living with them, 52.8% are married couples living together, 6.8% have a female householder with no husband ...