The 1881 Glasgow Directory has the prison at 71 Duke Street and the Model Lodging House at 77 Drygate.
https://archive.org/stream/postofficean ... 4/mode/2up
Drygate was at the back of the prison.
http://www.scotlandsplaces.gov.uk/recor ... 8&layers=B
Have you seen the original census document from ScotlandsPeople or only a transcription? There could be an error.
Glasgow Herald, Thursday, February 2, 1871;
TO WORKING MEN IN THE NORTH QUARTER OF THE CITY.
NEW MODEL LODGING-HOUSE, DRYGATE,
Erected by the City Improvement Trustees.
This New and Commodious LODGING-HOUSE (for MALES only) will be OPENED for receiving LODGERS on TUESDAY. 7th FEBRUARY.
The House contains 150 Beds (each separately enclosed). Together with a large Dining and Sitting Hall, Kitchen (with Hot-Plate), Cooking Utensils. Lavatories, &c., &c.
Lodgers will be received either for a Single Night or for a Week.
There will be Two Scales of Charges. For one part of the House the Charge will be Threepence per Night, and One Shilling and Sixpence per Week: and for the other part of the House, Fourpence per Night, and Two Shillings Per Week. Payment must be made on Admission.
The By-Laws and Regulations will be seen on a visit to the House.
WM. RAE ARTHUR, Lord Provost,
City Chambers. 23d January, 1871.
Alan