Vehicles registered within the following United States Postal Service zip codes (as of September 1, 1994) require emission tests. Zip code changes by the United States Postal Service after September 1, 1994, do not change emission test area designations.

Puget Sound Region
98001-98009	98201-98208
98011	98258
98012	98270
98015	98271
98020	98275
98021	98290
98023	98291
98025-98028	98327
98031-98043	98332
98046	98335
98047	98338
98052-98059	98344
98062-98064	98352
98071-98073	98354
98083	98371-98374
98092	98387
90893	98388
98101-98109	98390
98111-98199	98401-98499

Spokane Region
99001	99021
99005	99025
99014	99027
99016	99037
99019	99201-99209

Vancouver Region
98604 except north of N.E. 279th Street
98606
98607
98629 except east of N.E. 50th Avenue
98642
98660-98668
98671 except Skamania County
98682-98686

PDFWAC 173-422A-050

Emission test areas.