Regional Growth Planning

The Puget Sound region is beginning the process to update the regional, county, and city plans for growth. The current focus of this process is being conducted by the Puget Sound Regional Council (PSRC), which will inform growth plans developed by King County, and eventually Mercer Island.

PSRC is updating the regional plan for managing growth, known as VISION 2050. Forecasts show the region needs to plan for 1.8 million additional people and 1.2 million new jobs by 2050. VISION 2050 will inform countywide growth targets and city comprehensive plans. PSRC has identified three growth alternatives, and has analyzed the environmental effects of each alternative in a draft Supplemental Environmental Impact Statement (SEIS). More information on the update process and the three alternatives is provided below.

The City of Mercer Island sent a comment letter to PSRC on April 29, 2019. The comment letter was drafted based on the guidance contained in the City's adopted Comprehensive Plan.

City staff will update this page as the regional growth planning process progresses.


The Puget Sound region is beginning the process to update the regional, county, and city plans for growth. The current focus of this process is being conducted by the Puget Sound Regional Council (PSRC), which will inform growth plans developed by King County, and eventually Mercer Island.

PSRC is updating the regional plan for managing growth, known as VISION 2050. Forecasts show the region needs to plan for 1.8 million additional people and 1.2 million new jobs by 2050. VISION 2050 will inform countywide growth targets and city comprehensive plans. PSRC has identified three growth alternatives, and has analyzed the environmental effects of each alternative in a draft Supplemental Environmental Impact Statement (SEIS). More information on the update process and the three alternatives is provided below.

The City of Mercer Island sent a comment letter to PSRC on April 29, 2019. The comment letter was drafted based on the guidance contained in the City's adopted Comprehensive Plan.

City staff will update this page as the regional growth planning process progresses.


Please post your comment below; all comments will be considered as part of the public record. Be a good neighbor and keep your comments civil - please refer to our moderation policy for more details.  If you have a question, please submit it through the Ask A Question tool for a staff response.

Comments related to VISION 2050 and the draft SEIS will be shared with the Puget Sound Regional Council (PSRC).

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