My mistake, I thought the Street Address 2 field was present, but it is not.
I see the Address search field does not search the second address field, which you would thought it would.
Here is another solution, but I would say it is not great if you got a large amount of data.
In Contacts, create a New Search with the “Misc. Criteria” - “Data Exists” field set to “Street Address 2” - “Has a value”. In the “Columns” section add the “Street Address 2”.
When you run the Search you will have a list of Contacts that have the Street Address 2 field set.
If you set the number of Results Per Page to 500, then you have a big list to search in.
You use the Search feature in the Browser. Although, it will become tedious if you have 1000s of records.
Another alternative, would be to Export the Results to a CSV to do a Search in there instead.
If that is not ideal, then you will have to go with an external solution like Jeff said.
PS: Don’t expect Keap to add in that field in, it has been that way for many years.
Fix Your Funnel (FYF) has a bot called Move-it Bot that would copy contents from one field to another, which has worked fine in the past by triggering an API. However, they recently changed something with the API (which I have been ignoring until today!) and now that doesn’t work, or at least not without some tweaking TBD. If you find a way, please let me know!