Over the past 20 years, the number of foreign nationals "processed" by police (as reported in media) dropped by about 40% in five-year totals (2001–2005 → 2021–2025). Meanwhile, the number of foreign residents in Japan nearly doubled over the same period. In short, by this measure alone, "more foreigners" has not meant "more crime." But these are not arrest figures or conviction counts. Depending on how the terms are defined, the picture can look quite different. This guide covers just two things: what this number actually is (and isn't), and how to read it fairly.
Before you read: The numbers here correspond roughly to what police statistics call "cleared suspects" (検挙人員: kenkyojin'in)—the number of people identified as suspects in cases police have resolved. This is not the same as arrests or convictions. Media outlets use different words—"processed," "detained," "apprehended"—so this article uses "processed" as a shorthand. Where exact definitions matter, we refer back to the Crime White Paper.
Why does it feel like "more foreigners = less safe"?
Police statistics show a downward trend for foreign nationals processed, yet many people feel less safe than before. A few reasons for the gap
- Tourism rebound and visibility: More visitors and residents mean more visible diversity. A single incident can feel like a trend when it's not.
- How news and social media spread: One case can go viral and shape risk perception far more than any long-term dataset.
- Local vs. national: Nationwide totals can fall while specific areas or offense types keep making headlines.
- Political framing: "Foreign crime" is sometimes used as a political talking point, sharpening perception regardless of what the data says.
Feeling uneasy isn't wrong—but how things feel and what the statistics show are two different things. So what do the statistics actually show?
What does the "40% drop" actually refer to?
The widely cited comparison comes from National Police Agency (NPA) crime statistics, using five-year totals
- 2001–2005 (5-year total): 93,899 foreign nationals processed
- 2021–2025 (5-year total): 56,706 foreign nationals processed
That's a drop of about 40% from the earlier peak. The decline was widespread: numbers fell in 40 of 47 prefectures, and dropped by half or more in 14 of them. Over the same 20 years, foreign residents grew from about 2.01 million to about 3.95 million—so the per-capita rate fell even more sharply.
📌 Regional note: Even when national totals decline, some areas or offense types may still show concentrated issues. National trends don't tell the whole local story.
What's the difference between "processed," "arrested," and "convicted"?
Terms used in news and official reports tend to get mixed up, so here's the minimum you need to know
- What it means
- Number of people identified as suspects in resolved cases
- Easy to confuse with
- Arrest counts; conviction counts
- What it means
- Sometimes used to refer to "cleared suspects," but the exact scope varies by outlet
- Easy to confuse with
- Arrests; convictions
- What it means
- Physical detention as a legal procedure (may overlap with cleared suspects, but is not the same thing)
- Easy to confuse with
- Convictions; indictments
- What it means
- Decided by a court (separate statistics entirely)
- Easy to confuse with
- Cleared suspects; arrest counts
| Term | What it means | Easy to confuse with |
|---|---|---|
| Cleared suspects (検挙人員, the formal statistical concept) | Number of people identified as suspects in resolved cases | Arrest counts; conviction counts |
| "Processed" / "detained" (common in media) | Sometimes used to refer to "cleared suspects," but the exact scope varies by outlet | Arrests; convictions |
| Arrested | Physical detention as a legal procedure (may overlap with cleared suspects, but is not the same thing) | Convictions; indictments |
| Convicted | Decided by a court (separate statistics entirely) | Cleared suspects; arrest counts |
When you see "foreigners detained" or "processed" in a headline, that does not mean "arrested" or "found guilty." NPA figures count cleared suspects—a police-stage statistic, separate from court outcomes. Mixing these up makes conversations about both safety and fairness fall apart. Term definitions follow the Crime White Paper.
So is it "safe" or not? An honest answer
- Overall trend: By NPA cleared-suspect figures (as summarized in media as "processed"), the numbers for foreign nationals have dropped significantly from the peak 20 years ago—and even more so relative to the growing foreign population.
- It's not zero: Year-to-year fluctuations (e.g., post-COVID rebound) and specific offense types still show up. "Cases are down" doesn't mean "nothing ever happens."
- A fairness checklist: Keeping these five points in mind makes a big difference
- Are you looking at per-capita rates, not just raw numbers?
- Are offense types separated? (Traffic violations and serious crime shouldn't be lumped together.)
- Are residents and tourists being distinguished?
- Are cleared suspects, arrests, and convictions being kept apart?
- How does the statistic handle the resident vs. short-term visitor distinction?
Where can you check the data yourself?
- National Police Agency (Japan) — primary source for crime statistics (Japanese).
- Japan Today — "Number of foreigners detained in Japan down 40% from 20 years ago" — summary of NPA-based figures (March 2026).
- Ministry of Justice — Crime White Paper (section on foreign nationals and crime) — broader context and term definitions (Japanese; link may vary by edition).
FAQ
Does this statistic include tourists? NPA cleared-suspect figures (often reported as "processed") may include short-term visitors (tourists, etc.) alongside foreign residents. Exact breakdowns depend on how each report defines its scope, so for a resident-only view, check the latest Crime White Paper or detailed NPA publications.
Is "processed" or "detained" the same as arrested or convicted? No. "Cleared suspects" (検挙人員) refers to people identified as suspects at the police stage; media sometimes calls this "processed" or "detained." Arrests involve physical detention, and convictions are court decisions—each is a separate stage with its own statistics. Mixing them up distorts both the safety picture and the fairness discussion.
Sources
- National Police Agency (NPA) — primary source for crime statistics.
- Japan Today — "Number of foreigners detained in Japan down 40% from 20 years ago" (March 2026; as reported by Kyodo via Japan Today) — report with specific figures: 93,899 → 56,706; declines in 40/47 prefectures; halved in 14.
- Ministry of Justice — Crime White Paper (section on foreign nationals and crime) — term definitions (cleared suspects, etc.) and broader analysis (link may vary by edition).