99138 Frequently Asked Questions

A: ZIP Code 99138 is Located in Inchelium Washington. Portions of 99138 are also in Twin Lakes.

A: ZIP Code 99138 is Located Entirely in Ferry County Washington.

A: The Current Sales Tax in ZIP Code 99138 is 8.0%

A: The Area Code for 99138 is 509.

A: ZIP Code 99138 is in the Washington 5th Congressional District.

A: ZIP Code 99138 is in Washington State House of Representatives District 7.

A: ZIP Code 99138 is in Washington State Senate District 7.

A: The 2022 population of ZIP Code 99138 is 1103. The population growth rate in 99138 is -5.57%. The population density of 99138 is 2.

A: The majority race/ethnicity of people residing in 99138 is Native American (72.14%). The majority race/ethnicity of students attending public schools in 99138 is Native American(80.18%).

A: The median household income in 99138 is $41,136 (2021) and the average adjusted income is $170,120 (2021).