Here is the description of the enumeration district:
Enumeration District 16a on ancestry
Superintendant Registrar's District Saint Pancras
Registrar's District Somers Town
No of Enumeration District 16
Description of ditto: All that part of the parish of St Pancras comprising Chapel Street, the Grove, Newman's Place, Suter's Buildings, Denton's Buildings, Middlesex Place and Middlesex Court (thickly inhabited)