Carter County GIS Maps

Carter 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.

Carter County Parcels

Carter County has 8,004 mapped parcels covering 2,142,628 acres. The median assessed value is $13,820. The median lot size is 199.84 acres. 7,242 parcels are 10 acres or larger. Vacant land accounts for 58.9% of parcels. Exempt property follows at 29.5% and improved property at 11.4%. The records carry 920 distinct owner names. About 20% 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 Carter County Parcel viewer here.

Carter County Parcel Data Coverage

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

Carter County Population

Carter County had 1,415 residents in 2020. That was 22% higher than in 2010. Carter County added 55 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 0 people per square mile. Some of the county's most populated postal areas include Ekalaka, Alzada and Hammond.

Population Trend in Carter County MT

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

Carter County Zip Codes

Carter County has 4 zip codes. Some of the county's most populated zip codes include Ekalaka (59324), Alzada (59311) and Hammond (59332). Ekalaka is the largest zip by population, with about 967 residents or 68% of the county total. Together, the three largest zips account for about 86% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Carter County MT

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

Carter County Demographics

Carter County has a median age of 56.7, which makes the county a little older than Montana overall. About 17.6% of residents are under 18, while 30.1% 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 30.1% of the population, which points to an older population profile. About 20.3% 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 Carter County MT

Carter County School Districts

Carter 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.

Carter County Housing & Real Estate

Carter County has a median home value of $176,600 and a median gross rent of $731. About 62% 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 August 2025, the median listing price was $317,450 and homes spent about 214 days on the market.

Businesses in Carter County, MT

Carter County has 77 business listings across 51 categories. The largest categories in Carter County business listings are Structure And Geography (9, 11.7%), River (6, 7.8%), and Churches & Religious Organizations (5, 6.5%). The full Carter County business listings dataset includes names, categories, addresses and contact details where available. Carter County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Carter County, MT

Carter County Business Listings

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

Carter County Basemaps

Carter 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.