Karu is located in Nasarawa State, near the border of the Federal Capital Territory (FCT), Abuja. It is often mistaken for being part of Abuja because of its proximity to the capital. Karu serves as a residential hub for many people who work in Abuja.
Karu comprises streets, corporate offices and residential places that use the same postal code to send or receive parcels. Below is the postal code for Karu:
| Location | ZIP Code | State |
|---|---|---|
| Jikoyi | 900110 | Nasarawa State |
| Karu Site (FHA) | 900110 | Nasarawa State |
| Karu Village | 900110 | Nasarawa State |