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Hardline Coffee Company
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Address
1004 4th St, Sioux City, IA 51101
Website
Around the web
Public reviews and restaurant replies · not verified
Diner reports from Sioux City mention Hardline Coffee Company again and again. Reviewers describe art for sale on the walls, vintage decor and a location in the middle of town. Practical notes from diners: friendly staff. Reviews mention a tea menu and the coffee menu as part of the draw.
Diners also mention vegan.
vegan2
Gluten-free comes up in 3 observed reviews.
Latest gluten-free signal: 2026-08
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