Area code 815 — Illinois (US)

Latest community reports for numbers starting with 815.

Related area codes

812 813 814 816 817 818

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Sub‑area codes

More specific prefixes within this large region.

81539 81572 81596 815206 815220 815223 815224 815225 815226 815227 815229 815230 815232 815233 815234 815235 815237 815239 815244 815246 815248 815254 815265 815267 815273 815284 815285 815286 815288 815293 815316 815332 815334 815335 815337 815338 815339 815344 815356 815357