Self-Storage Facilities in King County, WA — Market Data (2023)
138 self-storage facilities operate in King County, WA, based on 2023 U.S. Census Bureau County Business Patterns (CBP) data — the same establishment counts the federal government uses for economic statistics.
Market density
That works out to 0.608 establishments per 10,000 residents, 16.1% above the national average of 0.5237 per 10,000 residents for self-storage facilities. Markets with lower density have fewer competitors per capita; markets with higher density have more.
Market data
| Metric | Value |
|---|---|
| Establishments | 138 |
| Density (per 10,000 residents) | 0.608 |
| Employment | 324 |
| Annual payroll | $15,406,000 |
| Average business size (employees/establishment) | 2.3 |
| County population (2023) | 2,271,380 |
Less saturated nearby markets
These counties have a lower self-storage facilities density than King County — fewer competitors per capita for the same industry.
- Suffolk County, NY: 0.604 per 10,000 residents (92 establishments)
- Franklin County, OH: 0.603 per 10,000 residents (80 establishments)
- San Diego County, CA: 0.596 per 10,000 residents (195 establishments)
- Orange County, CA: 0.59 per 10,000 residents (185 establishments)
See the full Self-Storage Facilities by county ranking for all 45 counties with available data.
Frequently asked questions
How many self-storage facilities are there in King County, WA?
138 self-storage facilities operate in King County, WA, according to 2023 U.S. Census Bureau County Business Patterns data.
Is the self-storage facilities market in King County, WA saturated compared to the national average?
King County, WA has 0.608 self-storage facilities per 10,000 residents, which is 16.1% above the national average of 0.5237 per 10,000 residents. That means more competitors per capita than the typical U.S. county.
What is the average size of a self-storage facilitie business in King County, WA?
The average self-storage facilitie business in King County, WA has about 2.3 employees (324 total employment ÷ 138 establishments).
Are there less saturated nearby markets for self-storage facilities?
Yes — Suffolk County, NY has a lower density (0.604 per 10,000 residents) than King County, WA, along with 3 other nearby counties listed below.