# Wisconsin license plate: Trailer

> The Wisconsin trailer license plate: format 99999 ZA, for example 15304 ZA, documented since 2026, trailer. What each character means, its sizes and sources.

Page: https://vehiclesdb.com/license-plates/united-states--wisconsin/trailer · Markdown version of the HTML page, which is canonical. Site map: https://vehiclesdb.com/llms.txt · Terms of use: https://vehiclesdb.com/legal/terms

Part of [Wisconsin license plates](https://vehiclesdb.com/license-plates/united-states--wisconsin) (8 registration series).

![Wisconsin (United States) license plate, Trailer (documented since 2026)](https://vehiclesdb.com/plates/us-wi/us-wi-trailer/wisconsin-license-plate-trailer.svg)

| Fact | Value |
|---|---|
| Format | `99999 ZA` (9 any digit) |
| Years | ~2026 → today (documented from 2026; the format is likely older) |
| Class | trailer |
| Issued for | trailer |
| Checking a registration | The format above follows the issuing rules: a registration that fits it is one this series could have issued. |
| Series id | `us-wi-trailer` (https://vehiclesdb.com/license-plates/united-states--wisconsin/trailer) |

Sources:

- [Wis. Stat. 341.12(1) one plate for other vehicles; (2) the fee-class encoding instruction the letter codes implement](https://codes.findlaw.com/wi/vehicles-ch-340-to-351/wi-st-341-12.html)
- [en.wikipedia.org](https://en.wikipedia.org/wiki/Vehicle_registration_plates_of_Wisconsin)
- [the stacked-character rule the ZA reading rests on](https://www.aamva.org/getmedia/646bcc8a-219b-47d8-b5cd-726240473163/License-Plate-Standard-Edition-3_September-2025-Update.pdf)

## About this plate

This is the entry where Wisconsin's statutory fee-class-encoding instruction and the observed letter codes meet, which is a rare case in this group of a design fact being predicted by law rather than merely observed.

## How numbers are issued

observed 1001Z/A to 15522Z/A as of 2024-03-07 (secondary)

## Use it

- Plate image (SVG): https://vehiclesdb.com/plates/us-wi/us-wi-trailer.svg
- Make it with your own text: https://vehiclesdb.com/license-plate-generator/wisconsin?series=us-wi-trailer
- API: `GET https://vehiclesdb.com/api/v1/plates/us-wi` returns this series as the entry with `"id": "us-wi-trailer"` (https://vehiclesdb.com/api)

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Open data, CC BY 4.0: reuse it with a visible credit to VehiclesDB and a link (https://vehiclesdb.com/legal/attribution). Plate images show sample serials and are not open data (https://vehiclesdb.com/legal/image-license). Dataset commit db0ec0a: https://github.com/vehiclesdb/vehiclesdb