can I obtain the 1930 census records for Waterloo Street in Marion, Ohio?

Thanks for posting your query on History Hub!

You should be able to order a copy of this record from the National Archives and Records Administration's website: https://www.archives.gov/research/order 

If you have further questions, feel free to contact the National Archives' reference office for further guidance, at:  archives1rerence@nara.gov

Sincerely,

Archives 1 Reference Branch (RR1R)
RR1R--25-12228-DD