This is the 1990 Census for the New Castle Avenu home of Martin, Martin Jr., Michael, Katie and Sarah
1900 Census 100 NewCastle Ave Martin Munroe Family

The Munroe home at the time of the 1900 census was given as 100 New Castle Avenue not far from their earlier home at 206 S. Heald Street. It appears to me that the 100 and 200 block of New Castle Avenue were eliminated at some point in the past. Now, New Castle Avenue ends where it runs into S. Heald Street and the house on New Castle Avenue where the two streets come together is 316 New Castle Avenue.
Satellite view of New Castle Avenue

Below is a photo of the house at 316 New Castle Avenue, where New Castle Avenue and S. Heald Streets merge in April of 2007.  Where was Martin Munroe's residence
in 1900 at the time of the census when it was as 100 New Castle Avenue.

316 New Castle Avenue