The main Citizenship and Immigration Services ("CIS") office is located at 5524 West Cypress Street, Tampa, FL 33607. There is no phone number for the public. You may make an appointment to speak with an immigration information officer by going to www.uscis.gov and utlizing the Infopass system. This CIS office handles the following counties: Citrus, Charlotte, Desoto, Hardee, Hernando, Hillsborough, Lee, Manatee, Pasco, Pinellas, Polk, and Sarasota.
Typically appointments are made at this office for people having interviews for purposes of attaining lawful permanent residence or citizenship. There is an office of Customs and Border Protection located at the same office, and I encourage people who are illegally present or who have been ordered deported in the past to NOT got to the office for any reason.
Few applications are filed at the local office anymore, but applicants may make appointments there to check on the status of their filed and pending cases.
Remember that the Immigration Officers you see are human, and that they are unlikely to respond well if you treat them poorly. It is in your best interest to dress well, smell good, and to treat the Immigration Officer well at any appointment you have.
The main benefit a competent immigration lawyer will bring to your interview is that you will be prepared in advance for questions you will get, and that the lawyer will be there to keep a record of the entire interview. A competent lawyer will also never let you file an application that will result in your arrest and possible deportation.