Data at the ZCTA level: What is the most comprehensive dataset (most years and variables available) and where to get it?

Hi all, 

I don't have much experience using the ACS and have been googling forums to get the most comprehensive ZCTA-Year ACS dataset possible. I tried using IPUMS, but cannot seem to find the option to download data at the ZCTA level, even when only using the 5-year ACS sample. I thought that it's likely that somebody wanted to get a similar dataset before on here. If yes, could you point me to what ACS resource I should use? The API? 

Thanks! 

Vicente