Owyhee County GIS Maps
Owyhee County, Idaho, has 11,913 residents and covers 7,668.2 square miles. The population grew 3.4% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Owyhee County is 16073.
Homedale is the county's largest population center. Owyhee County also includes 7 zip codes, 8 public school districts and 18 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 population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers and sample data. Paid packages add full layers, analytics and database files.
Owyhee County Trends
- Population
- 11,913▴
- Median Home Value
- $281,600▴
- K-12 Enrollment
- 3,872▴
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.
Owyhee 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.
Owyhee County Population
Owyhee County had 11,913 residents in 2020. That was 3.4% higher than in 2010. Owyhee County added 1,269 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 2 people per square mile. Some of the county's most populated postal areas include Homedale, Melba and Marsing.
Population Trend in Owyhee County ID
Owyhee County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Owyhee County Zip Codes
Owyhee County has 7 zip codes. Some of the county's most populated zip codes include Homedale (83628), Melba (83641) and Marsing (83639). Homedale is the largest zip by population, with about 4,996 residents or 42% of the county total. Together, the three largest zips account for about 99% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Owyhee County ID
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 83628 | Homedale | 4,996 | ▴ 15.4% |
| 83641 | Melba | 3,627 | ▴ 5.5% |
| 83639 | Marsing | 3,170 | ▾ -3.9% |
| 83624 | Grand View | 1,072 | ▾ -10.3% |
| 83604 | Bruneau | 676 | ▾ -11.3% |
| Download all zip code data | |||
Owyhee County Zip Code populations and trends per most recent census data.
Owyhee County Demographics
Owyhee County has a median age of 38.3, which makes the county a little older than Idaho overall. About 25% of residents are under 18, while 19.1% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 29.5% of the population, which points to a solid working-age base. About 13.7% of adults have a bachelor's degree or higher, above the statewide figure of 31.2%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.
Key Demographics for Owyhee County ID
Median Age
38.3
Under 18
25%
Age 65+
19.1%
Bachelor's+
13.7%
Owyhee County School Districts
Owyhee County is served by 8 public school districts with 3,872 students enrolled in 2024. The largest districts on the county map are Homedale Joint 370, Melba Joint 136 and Marsing Joint 363. Those three districts account for about 76% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, based on district totals from 2017 to 2024.
Largest School Districts by Enrollment in Owyhee County ID
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Homedale Joint School District 370 | 1,318 | 34% | ▴ 3.8% |
| Melba Joint School District 136 | 824 | 21.3% | ▴ 2.7% |
| Marsing Joint School District 363 | 816 | 21.1% | ▴ 0.4% |
| Glenns Ferry Joint School District 192 | 361 | 9.3% | ▾ -0.6% |
| Castleford School District 417 | 274 | 7.1% | ▾ -9.3% |
| Download all school district data | |||
Owyhee County school district enrollment and trends per most recent NCES reporting data.
Owyhee County Housing & Real Estate
Owyhee County has a median home value of $281,600 and a median gross rent of $771. About 71% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Idaho median, while rents come in below the state average. In March 2026, the median listing price was $582,225 and homes spent about 46 days on the market.
Owyhee County Housing Mix
Owyhee County housing mix: owner, renter and vacant units.
Owyhee County Housing Trends
Owyhee County median home value and rent trend (last 5 years).
Businesses in Owyhee County, ID
Owyhee County has 522 business listings across 206 categories. The largest categories in Owyhee County business listings are Structure And Geography (42, 8.0%), River (29, 5.6%), and Parks & Recreation (17, 3.3%). The full Owyhee County business listings dataset includes names, categories, addresses and contact details where available. Owyhee County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Owyhee County, ID
| Category | Businesses | Share |
|---|---|---|
| Structure And Geography | 42 | 8.0% |
| River | 29 | 5.6% |
| Parks & Recreation | 17 | 3.3% |
| Lake | 14 | 2.7% |
| Churches & Religious Organizations | 12 | 2.3% |
| Landmark And Historical Building | 11 | 2.1% |
| Auto Repair | 10 | 1.9% |
| Community & Nonprofits | 9 | 1.7% |
| Convenience Stores | 8 | 1.5% |
| Gas Stations | 8 | 1.5% |
Owyhee County Business Listings
| Business | Category | City |
|---|---|---|
| Van Engelen & Edgar CPA & Co. | Accountant | Grand View |
| Snake River Birds of Prey Area | Active Life | Owyhee |
| Briggs Farms Inc. | Agricultural Cooperatives | Marsing |
| Horse Guard | Agricultural Service | Redmond |
| Orchard Valley Irrigation | Agriculture | Homedale |
| Murphy Airport | Airport | Murphy |
| Homedale Ambulance Services | Ambulance And Ems Services | Homedale |
| Cabas | American Restaurants | Marsing |
| By His Grace Equine Rescue | Animal Rescue Service | Melba |
| Tim's Appliance Repair & Refrigeration | Appliance Store | Homedale |
| Download Owyhee County business listings | ||
Owyhee County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Owyhee County Basemaps
Owyhee 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 Owyhee County Data Package
This page shows a preview of what's included in the Owyhee 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 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 Owyhee County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.