Road Naming

ATTENTION: Effective September 23, 2021 Road Signs will now be managed by the Road and Bridge Department. Information on how to purchase a sign can be found here. Questions may be directed to the Road and Bridge Department at (406) 582-3250.

The Gallatin County Geographic Information Systems (GIS) Division, under direction of the Gallatin County Commission Resolution 2023-077, is responsible for managing the Gallatin County Address Reference System. The GIS Division assigns and reassigns road names and addresses to provide emergency service providers, the public, property owners, and Gallatin County with an accurate and systematic means of identifying and locating structures, thoroughfares, landmarks, and infrastructure in Gallatin County. Roads may be assigned names only through one of the processes described in §2.04.06 of the Gallatin County Addressing and Road Naming Policies and Procedures Manual (hereinafter, "Manual").

Property owner-initiated process to name a public or private road

• This process is for landowners desiring to name a new or existing road for private or public use that requires naming or renaming to facilitate locational services, emergency response, or improve conformance with the Manual.
• If you are a landowner or authorized representative and would like to request a road name assignment or reassignment through this process, follow the instructions provided on the Road Name Assignment Form and complete all the items on the Road Name Assignment Checklist for Landowners. A complete application will consist of all three documents provided below with the checklist items completed.

Subdivision (including PUDs and BLRs)

• This process of naming roads shall be limited to subdivision applications where the road or roads to be named are located entirely within the property being subdivided and will not result in readdressing any eligible owners other than the subject property owner. If the road naming requirements of the subdivision affect roads outside the proposed subdivision or require readdressing eligible owners other than the subject property owner, then the property owner-initiated process must be used to name the road.
• This process of naming roads shall be limited to the eligible owners (or their authorized agents) associated with the proposed road or roads to be named within the subdivision property.

  • If your road layout and name assignment is finalized for the preliminary plat approval process and you would like to obtain an approval letter from the Address Coordinator for the road names of a subdivision (PUD or BLR), complete a Road Name Assignment Form and all items on the Road Name Assignment Checklist for Subdividers. A complete application will consist of both documents provided below with the checklist items completed and any required attachments.