This variable is the strata identifier for the sample. Strata is a constructed variable that is captures implicit geographic stratification resulting from the sample design. It is created by assigning a unique identifier to groups of between 10 and 19 adjacent households. Additional documentation is available on the Variance Estimation page.
Geography: A-L Variables -- HOUSEHOLD
Imputation and derivation
This is a 5-digit numeric variable with 0 implied decimal places