No Street Has a Name

The taxi driver pulled over, got out, and walked into a convenience store. Not to buy anything. To ask where the building was. The taxi I was in sat, according to my phone, thirty metres from the destination. According to the physical world, we were in a residential cul-de-sac in eastern Osaka that looked identical to the one I'd tried two minutes earlier. He came back with directions and a vague gesture. I found the place eventually. Its number sat between a 7 and a 15.

Welcome to the Japanese address.

There is no street name in it, because there is no street.

How an Address Nests

Most countries pin a building to the road it sits on. You live at a point along a named line, and the address tells someone which line and how far along. The road is the reference. Japan does the opposite. It names the spaces, not the lines: the block, not the road between blocks. The road is just the gap. Nobody named it because it was never the point.

A Japanese address reads from largest to smallest, and once you stop expecting a street, the order makes sense. Take Tokyo Tower, which has a real, public address: 〒105-0011 東京都港区芝公園（とうきょうとみなとくしばこうえん）4丁目（ちょうめ）2番（ばん）8号（ごう）. That unpacks as Tokyo (都（と）, the metropolis), Minato (区（く）, the ward), Shiba-kōen (the district), then 4-chōme, block 2, building 8, compressed in writing to "4-2-8."^[1] Six levels of nesting to reach one front door, and not a road anywhere in the line.

It's elegant the way a filing cabinet is elegant. Every building has a place, and the place is exact. The address tells you precisely which small rectangle of ground a building sits in. What it doesn't tell you is how to walk there.

That part is your problem.

The Number Problem

Finding the right block is the easy half. The numbers inside it are where newcomers come unstuck.

Japan runs two addressing schemes at once, and they handle building numbers differently. The older one is chiban (地番（ちばん）), the Meiji-era land-registry system still governing many rural and older neighbourhoods. Its lot numbers follow the order the land was registered, not where it sits.^[2] So lot 3 can end up between lot 18 and lot 42, because that's the sequence three owners happened to file their paperwork in a century ago. The numbers are a registry log, not a map.

This is the thing that breaks people, and it is worth saying plainly: it is not random, it is just historical.

The modern scheme is jūkyo hyōji (住居表示（じゅうきょひょうじ）), formalised by the Act on Indication of Residential Address, Law No. 119 of 1962.^[3] It numbers buildings by where they actually are, running clockwise around the block perimeter at roughly ten-metre intervals from a fixed corner, keyed to each building's main entrance.^[4] That is far more sane, and it covers most of the country now. But chiban areas were never forced to convert, so both systems persist, side by side, sometimes within the same city. You occasionally need to know which one you're reading.

What the Postcode Buys You

The seven-digit postcode does more heavy lifting here than it does in Britain. Japan moved from a three- and five-digit code to the current seven-digit format (NNN-NNNN, marked with the 〒 symbol) on 2 February 1998, which narrowed a single code down to roughly one town area or block.^[5] Type a postcode into most Japanese forms and it auto-fills everything down to the district. You write the chōme, the block, and the building yourself.

It's a genuinely good piece of design, and it does most of what a street name would do in a Western address. It gets a posted letter to the right small patch of ground. It just stops short of the last thirty metres. The postcode finds the block. The block does not introduce you to the door.

When the Number Won't Walk You There

For the gap between "you have arrived" and actually standing at the correct building, Japan has a fallback older than GPS: the kōban (交番（こうばん）), the small neighbourhood police box. There are roughly 6,250 of them nationwide, a system running since 1874, staffed around the clock.^[6] In rural areas the equivalent is the chūzaisho (駐在所（ちゅうざいしょ）), where one officer lives on-site.

The secret weapon isn't the officer. It's the map on the wall. Each kōban keeps a large-scale residential map, a Zenrin map almost certainly, since Zenrin covers about 99% of Japan's municipalities, naming every household and tracing every building's outline.^[7] That data is kept current by surveyors who walk the streets door to door, pacing out footprints by eye. The address book of Japan is maintained on foot. Before smartphones, "go to the kōban and ask" was genuine advice. For a tiny back-alley shop, it still beats the blue dot.

The blue dot helps, of course. Type an address into your phone and you'll get to the right block with no drama. But "the right block" is doing real work in that sentence. Once you're there, you're still reading plates, counting from corners, or asking a stranger. The GPS layer sits on top of the old system and smooths most cases over, until it doesn't, and you're back to the convenience store.

And directions here have always run on landmarks rather than coordinates. "Turn at the Lawson, past the car park, the brown building behind the dentist." It sounds imprecise. It works far better than "37 Oak Street" when there is no Oak Street. Apartment blocks pin a little map at the entrance for the same reason: the number alone won't carry you in.

There's one more layer here that the West simply doesn't have. The plate by most front doors isn't a number at all — it's a 表札（ひょうさつ） (hyōsatsu), a nameplate carrying the household's surname. A British house announces itself by number; a Japanese one announces itself by family. So once the block has walked you most of the way, the final check isn't "is this number 8" so much as "is this the Tanaka house," read off a small wood, stone, or stainless plate by the gate. It's a fading habit — plenty of newer residents leave theirs blank for privacy — but where it survives, the surname does the job the building number can't: it tells you you've actually arrived.

The Address Has Rules Anyway

The street has no name, but the address still comes with paperwork. Move house and you have fourteen days to file: a tenshutsu todoke (転出届（てんしゅつとどけ）) to leave your old ward, a tennyū todoke (転入届（てんにゅうとどけ）) to register in the new one, or a tenkyo todoke (転居届（てんきょとどけ）) if you only crossed the street inside the same ward. Miss the window and the fines run up to ¥200,000 under immigration law, or ¥50,000 under the Basic Resident Registration Act.^[8] The road may be anonymous; your residence in it is very much on record.

The Residual Charm

I should be more annoyed by all this than I am. As someone who writes about systems, the Japanese address offends my sense of how information ought to be organised. It's a spatial database with no intuitive way to query it. It leans on local knowledge that can't be handed over and memorisation that can't be automated.

But there's something in it I've come round to. Kyoto, incidentally, is the one place that breaks the pattern: its old grid lets it address by intersection instead, agaru and sagaru, up and down from a named crossing, the closest thing Japan has to a Western street. The rest of the country assumes you belong to a neighbourhood, that you know the blocks around you the way you know the rooms of your flat. Your address doesn't describe a point on a line. It describes a place you're inside of, a block, a district, a ward. You're contained, not plotted.

Whether that's worth the trade-off depends on whether you're the resident or the lost fare in the back of the taxi. Eight years in, I've been both. The answer, like the building numbers, doesn't run in a straight line.