wheresgeorge.com
What Where’s George Is, in Plain Terms
Wheresgeorge.com is an online currency-tracking site built around a simple idea: every paper bill has a unique serial number, so you can log a bill you’re holding and later see where it shows up again when someone else logs the same bill. The site describes itself as an “official currency tracking project,” and it supports tracking U.S. bills and Canadian bills.
The hook is that it’s not just your own “where did my money come from” curiosity. It’s a big, user-built dataset of real-world cash movement. When it works well, you get a trail: cities, states (and sometimes countries), plus time and distance between reports.
How Bill Tracking Actually Works
At the basic level, you enter identifying info from a bill plus your location. Wikipedia’s overview captures the core inputs: ZIP code (or equivalent location code), the serial number, and the series designation printed on the note.
A few practical details matter more than people expect:
- The “series” is the year shown on the bill near the word “Series.” The forums point new users to pick that year from a dropdown and to enter the full serial number including letters.
- Older edge cases exist. For example, the forums mention very old bills with red serial numbers, and that bills dated earlier than 1963 can’t be entered (so people shouldn’t mark them for tracking).
- Star notes and odd formatting matter. In the forums’ newbie guidance, they tell people to type an asterisk for a star in the serial.
Once the bill is in the database, you’re basically waiting for the second event: another person, somewhere else, logs that same serial number.
“Hits,” Natural Circulation, and Why the Site Cares About Rules
A “hit” is when a bill that was already entered gets entered again by another user later. That second entry is what creates the visible movement—distance, time between sightings, and a chain of locations.
This is also why the project is picky about “natural circulation.” The site’s concept depends on bills moving through everyday spending, not being deliberately passed back and forth to manufacture hits. Wikipedia notes that the site prohibits trading/exchanging bills with people you know for the purpose of re-entry, specifically to keep the data closer to real circulation and reduce fake hits.
If you step back, that rule isn’t just moralizing. It’s data hygiene. If a chunk of users coordinate re-entries, the movement patterns stop being about how cash really flows and start being about hobbyists running a loop.
The Social Layer: Marking Bills, Profiles, and the Hobby Side
A lot of Where’s George participation isn’t passive. People often mark bills with the site name or URL so the next holder notices and logs it. That practice is well-known enough that it drew law-enforcement attention back in 2000; Wired reported that the operator (Hank Eskin) had discussions with the U.S. Secret Service, with the focus being the act of marking bills to encourage site visits.
From the user side, the “hobby” has its own vocabulary, status systems, and community spaces. The site and its ecosystem talk about:
- “Georgers” (users) and “Georging” (the act of entering/marking bills), plus scoring/ranking systems like “George Score.”
- Forums with long-running threads and subcommunities (everything from general help to denomination-specific discussions).
There’s also an explicit support model. The site describes a “Friends of WheresGeorge” program where users contribute money and receive special account features, framed as helping keep the site running.
The Research Angle: Why Academics Ever Cared
The most interesting “serious” use of Where’s George data is that it works as a proxy for human movement. People carry cash. Cash moves when people move. That’s the whole logic.
A well-known Nature paper from 2006 (“The scaling laws of human travel”) analyzed banknote circulation patterns using data collected via wheresgeorge.com, with the goal of measuring statistical properties of travel and improving models relevant to things like disease spread.
Northwestern’s project page states the idea directly: use the dispersal of money as a proxy for human travel because banknotes are primarily transported by traveling humans.
Separately, the New York Fed’s Liberty Street Economics blog has discussed the appeal of Where’s George-type data for studying face-to-face interactions, including why it’s relevant to thinking about how illnesses might propagate through real human contact patterns.
So the site lives in two worlds at once: a niche hobby community and a dataset that, under the right constraints, can answer legitimate research questions.
Privacy and Data Realities People Miss
Where’s George isn’t asking for your real name to track a bill. But you are still creating a trail that includes locations and timestamps tied to your account activity. Even if it’s “just a ZIP code,” repeated entries can sketch a pattern: where you tend to be, how often you handle cash, and maybe where you travel if you enter bills on trips.
Also, the site ecosystem includes public-facing profiles and shareable bill-report pages (you’ll see individual bill tracking pages and user pages indexed by search engines). That doesn’t automatically mean sensitive personal info is exposed, but it does mean you should assume anything you post voluntarily (profile text, forum details) can be read widely.
If you’re privacy-conscious, the practical approach is:
- keep your profile minimal,
- avoid posting specific routine locations/times in forums,
- and think twice before sharing screenshots of tracking pages that might include your entry patterns.
What Makes the Site “Work” (and What Makes It Disappointing)
The hard truth: most bills won’t get a hit quickly, and many won’t get one at all. The system depends on two rare things lining up: the bill stays in circulation, and the next holder is aware of the project and motivated enough to log it.
That’s why the marking practice exists, and why there’s a culture around it. Marking increases the odds that the next person recognizes the bill as “trackable.” But it also creates friction: some people see it as vandalism/defacement, and collectors sometimes dislike altered notes. (Even in collector communities, you’ll find debate over whether stamping bills is acceptable.)
This tension is basically baked in. The project needs visibility to function, but visibility often comes from physically marking money, which not everyone appreciates.
Key takeaways
- Where’s George tracks the movement of U.S. and Canadian paper bills by letting users enter serial numbers plus location info and then showing “hits” when the same bill is logged again elsewhere.
- The project tries to preserve “natural circulation” by discouraging coordinated re-entries that would produce fake movement patterns.
- Beyond the hobby, researchers have used Where’s George data to study human mobility patterns, including work published in Nature.
- Marking bills is common in the community but controversial enough that it historically attracted Secret Service attention, and it can annoy collectors or anyone who dislikes altered currency.
FAQ
Is Where’s George only for $1 bills?
No. The concept applies to paper currency generally; users enter the serial number and series on a note. The “George” name is tied to the $1 bill culturally, but tracking isn’t limited to ones.
Can people outside the U.S. participate?
Yes. Users outside the U.S. can participate using non-U.S. location codes in the site’s system, and Canada is explicitly supported (using postal code).
What’s a “hit”?
A hit is when a bill you entered is later entered again by another user, creating a recorded movement from one location/time to another.
Why does the site discourage trading bills with friends?
Because it distorts the main goal: observing how money naturally circulates. Coordinated re-entries can create misleading movement paths and inflate hit counts.
Is it legal to write or stamp “wheresgeorge.com” on a bill?
This has been debated for years. What’s clearly true is that the practice was controversial enough that the site operator discussed concerns with the Secret Service (per Wired’s reporting). If you’re worried, the safer approach is: don’t mark bills, or keep any marking minimal and never obscure critical features like the serial number.
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