Trying to find the family of William (Wilhelm) Kopp (born July 1878, Massachusetts) and wife, Sarah (Sadie) Foley Kopp (born Sept. 1881, New Jersey) in the 1930 census.

The city directories for 1929 and 1931 show an address of 124 Williams, Jamaica Plains, Boston for the family.

From my searches I have not found them in the 1930 census indexes, but was thinking I would look through the pages of the correct Boston enumeration district to see if they are at the 124 Williams address.

Not knowing the Boston area it is difficult to know which district(s) would be the correct one(s) to check.

They are not living at the same address in 1920 nor 1940.

Can anyone help me find the correct enumeration district number?

Thank you.