Big Horn County GIS Maps
Big Horn County, Montana, has 13,124 residents across 14,743 parcels and covers 4,997.8 square miles. The population grew 2% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Big Horn County is 30003.
Hardin is the county's largest population center. Big Horn County also includes 11 zip codes, 0 public school districts and 15 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
Big Horn County Trends
- Population
- 13,124▴
- Median Home Value
- $148,200▾
- K-12 Enrollment
- --—
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Big Horn 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.
Big Horn County Parcels
Big Horn County has 14,743 mapped parcels covering 3,195,509 acres. The median assessed value is $23,638. The median lot size is 121.01 acres. 11,539 parcels are 10 acres or larger. Vacant land accounts for 44.2% of parcels. Tribal property follows at 30.1% and improved property at 18.3%. The records carry 3,124 distinct owner names. About 18% 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 Big Horn County Parcel viewer here.
Big Horn County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 14,743 | 100% |
| Owner name | 14,740 | 99.9% |
| Owner mailing address | 14,740 | 99.9% |
| Site address | 4,393 | 29.8% |
| Land use code | 0 | 0% |
| Land use description | 14,740 | 99.9% |
| Assessed value | 14,644 | 99.3% |
| Land value | 14,644 | 99.3% |
| Improvement value | 14,644 | 99.3% |
| Acreage | 14,743 | 100% |
| Parcel boundary | 14,743 | 100% |
| Download all Big Horn County parcels. | ||
Field coverage measured across all Big Horn County parcel records.
Big Horn County Population
Big Horn County had 13,124 residents in 2020. That was 2% higher than in 2010. Big Horn County added 453 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 3 people per square mile. Some of the county's most populated postal areas include Hardin, Crow Agency and Lodge Grass.
Population Trend in Big Horn County MT
Big Horn County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Big Horn County Zip Codes
Big Horn County has 11 zip codes. Some of the county's most populated zip codes include Hardin (59034), Crow Agency (59022) and Lodge Grass (59050). Hardin is the largest zip by population, with about 5,418 residents or 41% of the county total. Together, the three largest zips account for about 69% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Big Horn County MT
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 59034 | Hardin | 5,418 | ▴ 4.4% |
| 59022 | Crow Agency | 1,868 | ▾ -4% |
| 59050 | Lodge Grass | 1,722 | ▴ 0.4% |
| 59016 | Busby | 1,044 | ▾ -4.1% |
| 59066 | Pryor | 699 | ▾ -0.3% |
| Download all zip code data | |||
Big Horn County Zip Code populations and trends per most recent census data.
Big Horn County Demographics
Big Horn County has a median age of 32.3, which makes the county a little younger than Montana overall. About 32.4% of residents are under 18, while 13.7% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is Under 18 at about 32.4% of the population, which suggests the county has a notable share of children and family households. About 20.9% of adults have a bachelor's degree or higher, above the statewide figure of 34.5%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.
Key Demographics for Big Horn County MT
Median Age
32.3
Under 18
32.4%
Age 65+
13.7%
Bachelor's+
20.9%
Big Horn County School Districts
Big Horn County is served by a network of public school districts across the map area. Several larger districts account for a substantial share of students across the county map area. A few larger districts account for much of the county-serving student population. Enrollment trends are not available yet for the districts shown on the county map.
Big Horn County Housing & Real Estate
Big Horn County has a median home value of $148,200 and a median gross rent of $686. About 68% 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 $283,750 and homes spent about 179 days on the market.
Big Horn County Housing Mix
Big Horn County housing mix: owner, renter and vacant units.
Big Horn County Housing Trends
Big Horn County median home value and rent trend (last 5 years).
Businesses in Big Horn County, MT
Big Horn County has 476 business listings across 187 categories. The largest categories in Big Horn County business listings are River (28, 5.9%), Churches & Religious Organizations (25, 5.3%), and Parks & Recreation (13, 2.7%). The full Big Horn County business listings dataset includes names, categories, addresses and contact details where available. Big Horn County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Big Horn County, MT
| Category | Businesses | Share |
|---|---|---|
| River | 28 | 5.9% |
| Churches & Religious Organizations | 25 | 5.3% |
| Parks & Recreation | 13 | 2.7% |
| Landmark And Historical Building | 13 | 2.7% |
| Lodge | 13 | 2.7% |
| Gas Stations | 11 | 2.3% |
| Convenience Stores | 11 | 2.3% |
| Elementary School | 10 | 2.1% |
| Flowers & Gifts | 9 | 1.9% |
| Insurance Agencies | 8 | 1.7% |
Big Horn County Business Listings
| Business | Category | City |
|---|---|---|
| Muddy Creek | Accommodation | Muddy |
| Reisig Cattle | Agricultural Cooperatives | Hardin |
| Town and Country Supply | Agricultural Service | Hardin |
| Lariat Country Kitchen | American Restaurants | Hardin |
| Custer's Last Stand | Amusement Park | Hardin |
| Big Horn Appliance Repair and Maintenance | Appliance Repair Service | Hardin |
| Camp Wallace (Virginia) | Armed Forces Branch | Lodge Grass |
| Faraway Fine Art | Arts And Crafts | |
| Crow Fair Pow wow Grounds | Arts And Entertainment | Crow Agency |
| LibertyX Bitcoin ATM | ATMs | Busby |
| Download Big Horn County business listings | ||
Big Horn County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Big Horn County Basemaps
Big Horn 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.
Get the Full Big Horn County Data Package
This page shows a preview of what's included in the Big Horn County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for parcels, zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Big Horn County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.