Custom Merch for Gyms in Seattle, WA
Merch Mob makes member tees, coach and staff apparel, and challenge and competition shirts for gyms in Seattle, WA, at its shop in Montclair, CA, and ships them to Seattle. In Seattle, 35% of residents are 18 to 34, far above the national 23% (Census ACS, 2020-2024), a crowd that wears a gym tee around town, so cropped cuts and a second colorway can earn their place.
Seattle by the numbers
Seattle has grown to 784,777 residents, up 6.5% since 2020 (Census estimates).
King County has 422 fitness and recreational sports centers with paid employees (Census County Business Patterns, 2023). That is 1.8 for every 10,000 residents, above the national figure of 1.2. 50% of them employ fewer than 10 people; the rest are larger operations. The count is up 8% from 392 in 2018.
That Census category covers gyms and studios along with other recreational sports facilities.
King County as a whole has 2,344,939 residents, up 3.3% since 2020. King County has one fitness or recreational sports center for every 5,560 residents.
- Population, 2025
- 784,777
- Since 2020
- +6.5%
- County
- King County
- Fitness and recreational sports centers in King County, 2023
- 422
- Per 10,000 county residents
- 1.8 (US 1.2)
- Time zone
- Pacific
- Median age
- 35.6 (US 38.9)
- Residents aged 18 to 34
- 35% (US 23%)
- Warmest month, average high
- August, 77°F
- Coldest month, average low
- December, 36°F
- Days at 90°F or hotter, a year
- 3
- Nights at 32°F or colder, a year
- 30
- Rain, a year
- 36 in
- USPS zone from the shop
- 5
Weather: Seattle Boeing Field station, 5 mi from Seattle's center (NOAA 1991-2020 Climate Normals). People: Census ACS 2020-2024. Counts: CBP 2023, by county, paid-employee establishments. Population: Census, July 2025.
What Seattle's weather means for gyms
Average highs in Seattle stay under 65°F for 7 months a year and peak at 77°F in August, so a midweight hoodie or quarter-zip is worn before and after class in almost any month. Long sleeves and light layers for a cool morning run sell better here than tanks. About 30 nights a year drop to freezing or below, which keeps a beanie and a crewneck on the front desk through winter. Rain peaks in November at about 5.8 inches, so schedule outdoor challenges around it and give members an indoor-class tee for the wet weeks.
| Month in Seattle | Average high | Average low | Rain (in) | What members train in |
|---|---|---|---|---|
| January | 49°F | 37°F | 5.2 | Long sleeves and hoodies |
| February | 51°F | 37°F | 3.7 | Long sleeves and hoodies |
| March | 55°F | 39°F | 3.9 | Long sleeves and hoodies |
| April | 60°F | 44°F | 2.9 | Long sleeves and hoodies |
| May | 67°F | 49°F | 2 | Tees and light quarter-zips |
| June | 71°F | 54°F | 1.2 | Member tees and tanks |
| July | 77°F | 58°F | 0.6 | Member tees and tanks |
| August | 77°F | 58°F | 0.8 | Member tees and tanks |
| September | 72°F | 54°F | 1.4 | Member tees and tanks |
| October | 61°F | 46°F | 3.5 | Long sleeves and hoodies |
| November | 53°F | 40°F | 5.8 | Long sleeves and hoodies |
| December | 48°F | 36°F | 5.5 | Long sleeves and hoodies |
Made in So Cal, shipped to Seattle.
Orders ship to Seattle from the shop; there is no office or pickup point in Washington.
Seattle is about 967 miles from Merch Mob's shop in Montclair, CA, a straight-line distance. From the shop's ZIP code, Seattle is USPS zone 5. Seattle shares the shop's Pacific time zone.
From the production floor
Merch Mob production in Southern California.
Ordering from Seattle
When should a gym in Seattle stock hoodies?
From October to April, the months under a 65°F average high in Seattle. Average lows stay above freezing, but frosty nights still come, so pair a midweight hoodie with a beanie.
More for Seattle
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