Choose a real strength or need.
Start with a documented local industry. Keep its place ID, code edition, year, and measure together. A company count and a jobs estimate answer different questions.
Sister City research The same work.
COMPARE INDUSTRY DEFINITIONS
The same work.
A shared language.
Your local businesses may use NAICS codes. A potential partner’s records may use ISIC or a national system. Start by finding the recorded link between the industry definitions.
Show the industry connection.
Compare country and U.S. metro industry profiles
Search by a code or industry title. Read across each row to see its counterpart and the limits of that link. Try programming, aircraft manufacturing, or grain farming to see real source examples.
NAICS is the North American Industry Classification System; this tool uses the U.S. 2022 edition. ISIC is the United Nations’ International Standard Industrial Classification; this crosswalk uses Revision 4. Countries can use national classifications derived from ISIC, so confirm the system in the records you plan to compare.
Try a source example:
1 mapping row for “541511” · 1,706 rows in the complete source.
| U.S. NAICS 2022 | ISIC Rev.4 | Scope of this mapping |
|---|---|---|
541511Custom Computer Programming Services | 6201Computer programming activities | No additional row qualification recorded. Read both industry definitions before using this link. Source row 1684 · Source status: OFFICIAL_SOURCE |
Source editions, partial links, and review rows
These are the supplied U.S. NAICS 2022 ↔ ISIC Rev.4 mappings. International records may use another national classification or edition; check that record’s system first. Many-to-many links must retain their notes and partial-industry flags.
All 1,706 rows remain in the download. One mapping uses source ISIC code 0331 outside the 419-class master, so 1,705 rows are included in default exploration. One other row’s partial flags could not be verified against its exact raw record. Both are labeled in the data.
ISIC classes 9810 and 9820 have no observed NAICS match in the supplied master. A missing correspondence is shown as missing; no replacement code is invented.
Source named in the supplied NDS table: U.S. Census Bureau concordance · Reference published October 23, 2026 · Industry definitions, with no change to index scores.
FROM A CODE TO A USEFUL CONVERSATION
Give a city relationship
something to work on.
Follow the classification link.
Find the recorded ISIC counterpart. Keep partial links and all branches visible. A single business that maps to several codes still counts as one business.
Ask a prospective partner.
Use the definition to request comparable local evidence and a conversation with a relevant institution. Both communities should help decide what they want to build.
What this makes possible today
You can translate industry definitions and prepare a more precise request. For example, the saved source links U.S. 541511, Custom Computer Programming Services, with 6201, Computer programming activities, in ISIC Rev.4.
To compare the strength of two cities, the next input is their actual industry observations. This page does not yet join city business records, compute industry opportunity scores, or identify buyers and suppliers.
Read the standards: U.S. Census NAICS · UN Statistics Division ISIC. The supplied NDS reference names the Census concordance as the source for these mapping rows.
YOUR QUESTION. YOUR WORKING NOTES.
My Diplomacy Notebook
Keep your goal, research, sources, and next step together. Open this notebook from any page and continue where you left off.
What to record for this guide
- Local place, industry code, edition, and observation year
- Mapped code, definition, and all relevant qualifications
- Which city records or local institution could help confirm a useful connection
Add sources, contacts, and a date
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