Chain · United States · data through September 2026

Costco

Iceflower tracks 679 Costco stores across 47 US states, DC, and 1 territory. It ranks #1 of 918 tracked US warehouse club chains by card spend. Its share of tracked category spend moved +0.6% over the last year.

Rankings come from real card and bank transactions across a panel of 130M+ US and EU consumers. We publish relative growth and rankings, never revenue figures. About the data

Tracked stores
679
States
47
Category
Warehouse Club
Category rank
#1

Growth

Costco against its category

The biggest tracked US warehouse club chains by card spend, with year-over-year growth of category share. Share means a chain's slice of tracked category spend. It can decline while the chain's own sales grow. The chart tracks Costco's share of the category quarter by quarter, indexed to 2024 Q4 = 100.

# Chain YoY share
1 Costco +0.6%
2 Sam's Club -0.4%
3 BJ's Wholesale Club -2.6%
4 costco.com -
5 Taj Wholesale 2 -
6 Cash & Carry -29.4%
7 Martinez Distributors +0.4%
8 Costco Business Center +11.3%
9 Tropic Supply -
10 Sams Beauty Warehouse -0.5%

Share of tracked category spend, indexed

100 99.9 2024 Q4 2026 Q3

Store footprint

Store map

679 tracked Costco locations across 47 US states, DC, and 1 territory. California, Texas, and Washington hold 36% of them.

Customer overlap

Who shops at Costco

Tracked chains Costco customers also buy from more than a similarly active shopper would, indexed to the strongest overlap (100). From real card transactions.

More trends

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