29 C.F.R. § 1601.8

Where to make a charge.

            A charge may be made using the EEOC's designated digital systems, in person, by facsimile, or by mail to any EEOC office or to any designated representative of the Commission. The addresses of the EEOC's offices appear at
            www.eeoc.gov.

[85 FR 65217, Oct. 15, 2020]

Official source