To reach the audience editor, navigate to People>Audiences, and then hit the "New Audience" button.
To create an audience that includes newsletter subscribers who ALSO live in one zip code, first you will select the user field Optin (which can be found under Default User Fields).
You will want this criterion to be "Is Equal To Yes." The "Optin" field is a Yes/No field that determines whether or not a constituent has subscribed to your newsletter. Add a new line by clicking the plus (+) button at the end of the row.
In the second line, choose the user field "HomeAddress ZIP" and enter the exact, five-digit zip code you would like to target. Next, you should change Include People Matching from "Any Of" (which means "or") to "All Of" (which means "and").
As you build your audience, if you want to see how many people match the criteria you entered, just click "refresh" at the top of the page.
Then click "Save."
To create an audience that includes newsletter subscribers who ALSO live in multiple zip codes, you will need to use the Advanced Editor.
In the Advanced Editor, you will be able to use both "Any Of" ("or") and "All Of" ("and") within the audience by using filter groups.
Go to the Data Type dropdown menu and select Group, then click the orange "Add Field" button.
Then we will add subscribers to the criteria. In the Data Type dropdown, select "Yes/No" and in the Field Name dropdown choose "OptIn." Then click "Add Field."
The next step is to add a second group. Repeat the earlier steps (Data Type>Group, click Add Field), and the new filter group will appear on top of the original.
Now it's time to add the zip code criteria to your audience. In the Data Type dropdown select "Address," in Field Type choose what type of address you are trying to target (Home, Business, Other), and for the address component specify you want to use the zip. Click "Add Field" once for every zip code you want to include.
Type in the zip codes into each row in the Value column. Then we will have to make sure that our joiner in the top Filter Group is listed as "or" (because we want "Any Of" these zip codes to be included). We should also make sure that "and" is listed in the dropdown next to the second (OptIn) Filter Group (because you want to include "All Of" the criteria in the zip code group and the OptIn group).
Once you have added all of the criteria you want to include, click "Save."