Population in the central Puget Sound region reached 3,985,040 in April 2016, growing by 86,320 people in the past year. This is the biggest gain since 1980.
It is hard to know exactly when it will happen, but based on the current rate of population growth (about 236 people per day), we have likely already surpassed 4 million people in our region, maybe as early as the first week of June.
Every county is growing
King, Kitsap, Pierce and Snohomish counties all experienced population growth this past year. King County grew by 52,300 people (2.5%) while Kitsap grew by 4,390 (1.7%), Pierce by 14,370 (1.7%), and Snohomish by 15,260 (2%).
The level of population growth is not unprecedented.
In the late 1960s, the region was growing at almost 5% per year — twice the torrid rate we experienced this past year.
In general, these rapid population changes have occurred over 2 to 3 years before settling back to a steadier rate of change. If that trend continues, we can expect another year or two of heightened population growth.
More information on population trends is available here.