Responsibilities include development and administration of Teton County’s Subdivision Regulations, Hazard Mitigation Plan, enforcement of Floodplain Regulations, and overall land use management for the County in accordance with the Growth Policy. Our responsibilities also include facilitating communication between the landowners/developers and Stahly Engineering for the review of certificates of survey prior to filing with the County Clerk and Recorder for clerical errors and omissions and to insure exempt divisions of land are in compliance with the provisions outlined in the Montana Subdivision and Planning Act. Our office also issues new rural addresses and develops project maps for other departments. All 911 address data is created, edited and disbursed to the appropriate agencies as necessary to facilitate emergency response. This office issues floodplain permits and letters to interested parties regarding the absence of zoning in the county, when requested.



Brian Colesworthy
Teton County Planner

19 Main Ave South

PO Box 610

Choteau, MT 59422

406-466-3130 office

406-750-6788 cell

Maps of Teton County


Follow this link to the Teton County ArcGIS web page with maps, apps and demographic/economic information about Teton County MT.

2023 Growth Policy Plan

New Address Form

Floodplain Re-mapping Updates and Data

Information on Stream Gauges:

Montana State Library LiDAR Data{354b7afe-64b2-4d63-aa79-e6f8e01787d0}

Teton County Floodplain Map Timeline 2023

Owning Property in Flood Plain 100yr Fact Sheet

Owning Property in Flood Plain 500yr Fact Sheet

Owning Property in Floodway Fact Sheet

10 Questions to ask your potential floodplain consultant

Change Your Flood Zone Designation |

Flood Insurance Links and Resources

FloodSmart | Who Can Sell Flood Insurance? | FloodSmart – Agents

Flood Insurance | Montana Commissioner of Insurance (

Risk Rating 2.0 Discounts Risk Rating 2.0 Discount Guide-508c

Risk Rating 2.0 Explanation Guide Risk Rating 2.0 Rate Explanation Guide

Floodplain Regulations

*Floodplain Permit Application Fee is $500*

*Floodplain Variance Permit Application Fee is $500*

July 2022 Floodplain Regulations

Permit Information:  Permitting and Regulations (

Floodplain Variance Application

Subdivision Regulations/Forms

Teton County Proposed 2024 Subdivision Regulation – Final Draft Review for Document

(Please send all comments and questions to the County Planner (


Updated Fee Schedule 10.01.23

2013 Subdivision Regulations

Subdivision Application


Process Sheet- Exemption

Process Sheet- Expedited

Process Sheet- Minor Subdivision

Exemption Review Application


All subdivided property must be approved by the Planning Board.

Contact Brian Colesworthy at 406-750-6788 for questions.

Subdivision Exemptions

Montana Code Annotated 2015. 76-3-201.
Exemption for certain divisions of land — fees for examination of division.

Montana Code Annotated 2015. 76-3-207.
Divisions or aggregations of land exempted from review but subject to survey requirements and zoning regulations — exceptions — fees for examination of division.

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