Granite County GIS Maps

Granite County Maps

The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.

County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.

Granite County Parcels

Granite County has 7,575 mapped parcels covering 1,103,467 acres. The median assessed value is $134,225. The median lot size is 14.78 acres. 4,106 parcels are 10 acres or larger. Improved property accounts for 34.9% of parcels. Vacant land follows at 30.6% and exempt property at 23.0%. The records carry 3,433 distinct owner names. About 16% of parcels list an owner mailing address outside Montana. Owner names, mailing addresses, assessed values and lot sizes are on nearly every parcel. Browse the interactive Granite County Parcel viewer here.

Granite County Parcel Data Coverage

Field coverage measured across all Granite County parcel records. Download free sample data here.

Granite County Population

Granite County had 3,309 residents in 2020. That was 7.5% higher than in 2010. Granite County added 479 people between 2000 and 2020, which points to steady long-term growth. Philipsburg is the largest city in the county, but it accounts for only about 25% of the total population. The county is fairly spread out, with about 2 people per square mile. Some of the county's most populated postal areas include Clinton, Philipsburg and Drummond.

Population Trend in Granite County MT

Granite County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.

Granite County Zip Codes

Granite County has 4 zip codes. Some of the county's most populated zip codes include Clinton (59825), Philipsburg (59858) and Drummond (59832). Clinton is the largest zip by population, with about 2,450 residents or 74% of the county total. Together, the three largest zips account for about 148% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Granite County MT

Granite County Zip Code populations and trends per most recent census data.

Granite County Demographics

Granite County has a median age of 53.9, which makes the county a little older than Montana overall. About 15.1% of residents are under 18, while 30.9% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 65 and over at about 30.9% of the population, which points to an older population profile. About 31.2% of adults have a bachelor's degree or higher, above the statewide figure of 34.5%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.

Key Demographics for Granite County MT

Granite County School Districts

Granite County is served by 1 public school district with 180 students enrolled in 2024. Several larger districts account for a substantial share of students across the county map area. Those three districts account for about 100% of public school enrollment in the map area. Total enrollment has grown modestly since 2017 across the districts shown on the county map.

Largest School Districts by Enrollment in Granite County MT

Granite County school district enrollment and trends per most recent NCES reporting data.

Granite County Housing & Real Estate

Granite County has a median home value of $339,500 and a median gross rent of $734. About 76% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Montana median, while rents come in below the state average. In March 2026, the median listing price was $591,250 and homes spent about 172 days on the market.

Businesses in Granite County, MT

Granite County has 260 business listings across 124 categories. The largest categories in Granite County business listings are Lake (25, 9.6%), Structure And Geography (21, 8.1%), and Mountain (13, 5.0%). The full Granite County business listings dataset includes names, categories, addresses and contact details where available. Granite County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Granite County, MT

Granite County Business Listings

Granite County business listings sourced from Overture Maps. Includes locations with a high level of confidence.

Granite County Basemaps

Granite County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.

Preview a Live Package Demo

See exactly what is included in a county data package. Inspect how files are organized, the interactive data explorer and how maps and analytics are laid out. The demo loads a real sample package from Montana — explore the full structure before you buy.