The correct mailing address to file a Form 1040 or Form 1040-SR from overseas is:
Department of the Treasury
Internal Revenue Service Center
Austin, TX 73301-0215
USA
Sources:
Publication 54 (2023)
Instructions for Form 8975 and Schedule A (Form 8975) (12/2020)
Instructions for Form 1040-C (01/2024)
1040 (2023)
Instructions for Form 9465 (11/2023)
Instructions for Form 1040-NR (2023)
Instructions for Form 1040-SS (2023)