About UsBusiness PlansMarket ResearchInsightsLet's Talk

Why Your CPG Brand's Pack Size Decision Should Start With a Census Table, Not a Focus Group

Shah Alvi
Shah Alvi·

Why Your CPG Brand's Pack Size Decision Should Start With a Census Table, Not a Focus Group

I’ve seen too many CPG brands default to focus groups when making pack-size decisions—and I’ve seen too many of those decisions backfire. Here’s the problem: asking 12 people in a room what they think they want tells you nothing about what actually sells, where, and to whom. If you’re serious about optimizing pack architecture, you need to start with a census table, not a focus group.

The Data Doesn’t Lie (But Consumers Might)

A census table—a full-market view of pack sizes by channel, price point, and consumer segment—reveals what self-reported preferences often obscure. For example, eMarketer’s research shows that 43% of consumers claim they prefer larger packs for value, but transaction data proves smaller, convenience-sized units are outselling them in urban markets. Why the disconnect? Because what people say in a focus group and what they do at the shelf are two different things.

Focus groups excel at uncovering emotional triggers (e.g., "I feel ripped off by shrinkflation"), but they’re terrible at answering practical questions like:

  • Is there whitespace for a 18oz variant in the Midwest?
  • Do club stores move more 36-packs than 24-packs?
  • Are convenience stores under-indexed on single-serve options?

Those questions require hard data. As Packaging Dive’s analysis notes, brands leveraging store-level sales data see 15% higher repeat purchase rates on new pack sizes.

Shrinkflation Isn’t the Only Risk—Missed Opportunity Is

Yes, consumers are hypersensitive to pack-size changes (Grand View Research ties 22% of private-label switches to perceived downsizing). But the bigger risk isn’t just backlash—it’s leaving money on the table by not matching pack sizes to real purchase behavior. A census table can show you:

  • Channel gaps: Are dollar stores starving for smaller SKUs?
  • Price thresholds: Does a $4.99 12oz pack outsell a $5.49 16oz pack?
  • Occasion-based demand: Are weekend shoppers buying more multi-packs?

Tools like the Market Entry Scorecard formalize this by quantifying where your pack architecture underperforms. The goal isn’t just to avoid shrinkflation accusations—it’s to own the right sizes at the right prices.

The Winning Playbook: Census First, Focus Groups Second

Here’s how to fix this:

  1. Map the market with census-style data (channel distribution, price elasticity, competitive benchmarks).
  2. Identify whitespace using real transactions, not hypotheticals.
  3. Use qualitative research to refine messaging—not to choose sizes.

As Hivery’s case studies show, this approach reduces launch risk by 30%. The bottom line? Let the data decide your pack-size universe. Save the focus groups for naming and packaging design—where they actually add value.

Final thought: In a market where 68% of consumers are trading down or up by occasion (Packaging Digest), guessing isn’t a strategy. Build your pack sizes on what people buy, not what they say.