Yes. The term “reside” does not require that an individual have a physical address in Washington, just that Washington is the place they reside. If you are experiencing homelessness, you may check the box that you are opting out of providing your primary residence.
Individuals or their families who are experiencing homelessness may demonstrate that they “reside” in Washington by providing proof of their residency via a letter from a community organization or shelter affirming: (1) the community organization or shelter knows and can identify the individual, (2) the individual has resided in a particular area in Washington (which the organization or shelter will describe), and (3) the individual has resided in this area at least 183 days during the period for which the credit is being claimed.