Democrats or Republicans? The article doesnt say...Gee, I wonder which they are, and who the LA Times is covering for. /s
City councils and other local agencies (up to and including county boards of supervisors) are officially non-partisan in California. Yes, you could look up the voter registration data on the Lynwood city council members. But newspapers do not normally print that information regarding non-partisan elected officials unless it's specifically relevant to the story, which it isn't in this case.
There might be a dozen Republicans in Lynwood.