Maltby is a census-designated place (CDP) in Snohomish County, Washington.

It uses Snohomish and Woodinville addresses and is served by city services from Monroe.

12.3% of all households were made up of individuals, and 2.8% had someone living alone who was 65 years of age or older.

[7] Despite population growth in recent years, Maltby is part of unincorporated Snohomish County.

[7] A small shopping district is located at the center of Maltby.