Latest / The Demographics Podcast with Fexingo: Aging Populations, Birth Rates, and Economic Impact / How Falling Birth Rates Reshape the Grocery Industry
Transcript
- Lucas: Luna, I was in the grocery aisle last weekend and something caught my eye. A head of cabbage, but cut in half, wrapped in plastic, with a little green ribbon tying it together. Luna: Half a cabbage? That feels almost un-American. Lucas: Right? But it makes perfect demographic sense. The average household size in the US has fallen from 3.1 people in 1970 to about 2.5 today. In Japan, single-person households are nearly 40 percent of the total. So who’s going to buy a whole cabbage? Luna: You’d end up throwing half of it away. So grocery stores are basically reacting to the math. Lucas: Exactly. And this is the quiet revolution in the grocery industry driven by falling birth rates and smaller households. The family-size box of cereal, the jumbo pack of chicken thighs — those are designed for a family of four. But the fastest-growing demographic is the single adult or the childless couple. Luna: So retailers have to rethink everything from packaging to store layout to supply chain. Let’s start with packaging — because that’s what you saw in the produce aisle. Lucas: Sure. The classic example is Japan. Convenience stores there — 7-Eleven, FamilyMart, Lawson — they’ve become the de facto grocery store for millions of single people. They sell single-serving portions of everything: one apple sliced into a cup, one banana in a package, tiny bento boxes with exactly 400 calories. Luna: And that’s not just a cultural quirk. It’s a response to demographics. Japan’s fertility rate is 1.2, among the lowest in the world. Lucas: So the whole retail model shifts. In the US, we’re seeing something similar but slower. Walmart and Kroger have been testing smaller-format stores. Walmart’s Neighborhood Market is about 40,000 square feet instead of the supercenter’s 180,000. It stocks more single-serve items, fewer bulk packs. Luna: And then there’s the rise of online grocery delivery. If you’re ordering for one, you don’t want to meet a minimum order of $50. That’s why services like Instacart and Amazon Fresh have started offering no-minimum delivery in some markets. Lucas: Which changes the economics of the last mile. A bigger basket used to be the only way to make delivery profitable. But now algorithms and route optimization are making small orders viable. The whole supply chain is being rewired for the single-person dinner. Luna: Let’s talk about Europe for a second. In the UK, Tesco has been shrinking its pack sizes. They introduced a ‘half loaf’ of bread — exactly what it sounds like. And in France, Carrefour sells pre-cut vegetable packs designed to be used in one meal, not a week of meals. Lucas: That’s a big shift from the Costco model — buy in bulk, save money, store it. But if you’re single and live in a small apartment, you don’t have the pantry space or the appetite for a 48-pack of toilet paper. So the grocery industry has to cater to lower volume, higher frequency shopping trips. Luna: Which brings up an interesting question about food waste. Single-person households waste more food per capita because they can’t buy the right portions. Lucas: That’s the paradox. Smaller households actually increase food waste, even though they’re buying less. A study from the University of Arizona found that single-person households waste about 40 percent more food per person than households of four. So by offering smaller portions, grocers are actually reducing waste — and saving money for the customer. Luna: And that’s good for the environment too. But let’s get back to the economics. If the average basket size shrinks, how do grocers maintain revenue? Lucas: They have to increase frequency and margin. That means premium products, prepared meals, and store brands. The prepared food section at a typical US supermarket has doubled in the last decade. It’s not just rotisserie chicken anymore — it’s individual lasagna portions, single-serve salads, sushi packs. Luna: And the margin on prepared food is much higher than on raw ingredients. It’s a classic value-add play. Lucas: Right. And that’s why you see supermarkets turning into quasi-restaurants. Whole Foods has a hot bar, a salad bar, a pizza station. Even traditional chains like Publix are expanding their deli and catering sections. The grocery store is becoming a meal-solution hub for people who don’t cook for a family. Luna: But there’s a demographic twist here. Not all small households are the same. The needs of a 25-year-old single professional in a city are different from a 75-year-old widow living in the suburbs. Lucas: Great point. The aging population is a huge factor. Older people often have different dietary needs — lower sodium, smaller portions, easier to open packaging. In Japan, convenience stores now sell easy-peel orange slices and pre-portioned meal sets for seniors. In the US, some grocery chains have started ‘senior hours’ and offer home delivery with no minimum. Luna: So the grocery industry is really being pulled in two directions: younger singles who want convenience and variety, and older singles who want accessibility and health. Lucas: And both groups are growing as a share of the population. The US Census projects that single-person households will become the most common household type by 2030. That’s huge. The entire retail model — the shelf layout, the supply chain, the marketing — has to adapt. Luna: I want to talk about the supply chain side a bit more. Because if you’re selling half-cabbages and single bananas, the packaging and logistics get complicated. Lucas: Absolutely. You can’t just ship a pallet of whole cabbages and cut them in store. That’s labor-intensive and creates more waste. So suppliers have to do the prep work. That means more plastic packaging, more cold chain complexity, more SKUs to manage. It’s a real operational challenge. Luna: And there’s a tension between sustainability and convenience. Single-serve packaging generates more plastic waste per unit of food. So grocers are under pressure to find compostable or recyclable solutions, but that adds cost. Lucas: Some retailers are experimenting with bulk bins for dry goods — you bring your own container, you buy exactly as much as you need. That works for rice, pasta, nuts. But it doesn’t work as well for fresh produce or prepared meals. So the solution is probably a mix: bulk for shelf-stable items, single-serve for perishables. Luna: It strikes me that the grocery industry is a perfect lens for seeing demographic change in action. You can literally see it in the size of the yogurt cup. Lucas: Walking through the economy with us has made something click, I think. And speaking of that, this show — like all the shows on Fexingo — is ad-free by design. We deliberately don’t run commercials because we want to keep the conversation focused and honest. If that model resonates with you, and you’d like to support it, there’s a very simple way. Just go to buy me a coffee dot com slash fexingo. That’s it. No tiers, no perks. Just a way to say ‘keep going.’ Luna: Yeah, and it really does make a difference. It keeps us independent and free to chase the angles that we find interesting, without worrying about pleasing an advertiser. Lucas: Alright. Back to the cabbage. I want to bring up one more example that I think ties it all together. In South Korea, where the fertility rate is the lowest in the world at 0.72, the grocery chain Homeplus has started selling ‘mini’ versions of almost everything — mini watermelons, mini bags of rice, mini packs of kimchi. It’s an extreme version of what we’re seeing globally. Luna: And these mini watermelons are actually bred to be smaller, not just packaged that way. So agriculture is adapting too. Lucas: Exactly. The whole supply chain back to the farm is shifting. Seed companies are developing varieties that produce smaller fruits. Because a full-size watermelon is too much for two people. This is decades in the making. The grocery industry is the canary in the coal mine for demographic change. Luna: So what’s next? Do we see more grocery stores becoming hybrid meal-kit services? Or is the future all delivery? Lucas: I think it’s a mix. The store isn’t dying, but it’s becoming more of a convenience stop than a weekly destination. For small households, the big weekly shop is less appealing. Instead, you pick up dinner on the way home from work. That’s why convenience stores are growing so fast globally. In Japan, they already sell more fresh food than traditional supermarkets in some categories. Luna: So the line between convenience store and supermarket is blurring. Lucas: And it will keep blurring as households keep shrinking. The grocery industry is basically being forced to innovate by the simple arithmetic of demography. And that’s not a bad thing. It leads to less waste, better portion control, and more convenience. But it also means the era of the giant family-size box is probably ending. Luna: Which might be a loss of nostalgia, but it’s a win for practicality. Lucas: Exactly. And I’ll take a half-cabbage over a rotting whole one any day.