Trends · data through September 2026

Warehouse Clubs in Maryland

Iceflower tracks 54 stores from 22 warehouse club chains in Maryland. Costco grew fastest over the last year, ahead of Sam's Club and BJ's Wholesale Club.

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 chains
22
Tracked stores
54
Consumer panel
130M+

Growth ranking

Fastest-growing tracked warehouse club chains

Ranked by year-over-year growth of share of tracked local spend. Arrows show movement in the rankings since last year. Each dot in the chart is one tracked chain: bigger market position to the right, faster growth higher up, more tracked stores in a bigger dot. Colors match the store map below. Costco and Sam's Club sit in the high-growth half.

# Chain YoY growth
RankChainRank movementYoY growth
1 C Costco logo Costco - +0.8%
2 S Sam's Club logo Sam's Club - +0.7%
3 B BJ's Wholesale Club logo BJ's Wholesale Club - -3.8%
  • Costco
  • Sam's Club
  • BJ's Wholesale Club
  • Winsupply of Frederick
  • FoodPRO Corporation
  • Devil Dog Treasure Hunters
  • Chesapeake Brand Seafood
  • Other tracked chains

Store footprint

Store map

54 tracked store locations in Maryland. The 7 largest tracked chains are highlighted.

  • Costco (11)
  • Sam's Club (11)
  • BJ's Wholesale Club (13)
  • Winsupply of Frederick (1)
  • FoodPRO Corporation (1)
  • Devil Dog Treasure Hunters (1)
  • Chesapeake Brand Seafood (1)
  • Other tracked chains

Top tracked chains by store count

  • 1 B BJ's Wholesale Club logo BJ's Wholesale Club 13
  • 2 C Costco logo Costco 11
  • 3 S Sam's Club logo Sam's Club 11
  • 4 D Dynamic Rugs 1
  • 5 A American Fur 1
  • 6 L Lux Nail Supply 1
  • 7 A Aireco Supply Inc 1
  • 8 E EMY Wholesale 1
  • 9 W Wholesale Pallet Pushers 1
  • 10 A Aquaflow 1
  • 11 B Balloons N More 1
  • 12 M Maryland Automotive Equipment 1
  • 13 E El Quetzal Tienda Latina 1
  • 14 M MD Police Supply 1
  • 15 H Hopkins Sales Co 1
  • 16 H Hidey's Landscape Supply Yard 1
  • 17 W Wurth Wood Group 1
  • 18 M Muscle 1
  • 19 C Chesapeake Brand Seafood 1
  • 20 D Devil Dog Treasure Hunters 1
  • 21 F FoodPRO Corporation 1
  • 22 W Winsupply of Frederick 1

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